JPH1048740A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera capable of simultaneously performing photographing by means of a silver salt film and photographing by means of a photoelectric converter (CCD) and capable of easily finding out whether the exposure of the silver salt film is adequate or not from the brightness of the picture of the CCD. SOLUTION: This camera is provided with the silver salt film C08, the CCD (C21) for the photographing, a display device, a magnetic tape C28, and a flash device F, and the photographing by means of the silver slat film C08 is performed while the photographing by means of the CCD (C21) is performed. The picture photographed by the CCD (C21) is displayed on the display device, are recorded on the tape C28. Sensitivity difference between the film C08 and the CCD (C21) is corrected by the photoelectric converting time and the gain of the CCD (C21), an ND filter C13, and a diaphragm provided exclusively for the CCD (C21), so that the brightness of the picture of the CCD (C21) coincides with that of the picture of the film C08. In the case of the flash photographing, the brightness of the picture of the CCD (C21) coincides with that of the picture of the film C08.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera for taking a still image by a silver halide photosensitive system and a video image by a photoelectric conversion system, and more particularly to a video camera by a photoelectric conversion system. Related to a camera used as a release view or after view of a still image.

[0002]

2. Description of the Related Art In recent years, there have been proposed cameras that guide light from an object to be photographed to a silver halide film and a photoelectric conversion element (CCD) to perform photographing and video photographing. This camera can perform still image shooting with a silver halide film and moving image shooting with a CCD individually, or both can be performed simultaneously in parallel. An image photographed by the CCD can be recorded and stored on a recording medium, and can be displayed simultaneously with photographing by a camera having a display device.

Generally, an image photographed on a silver halide film cannot be viewed until post-processing such as development, and it is possible to know what kind of image was photographed only after a lapse of a short time after photographing. Therefore, it was not possible to reset the photographing conditions based on the photographing result immediately after photographing and to photograph again. On the other hand, an image captured by a CCD is electrically recorded, and can be reproduced immediately without performing post-processing such as development.

[0004] In the above-mentioned camera, what kind of image was shot on the silver halide film can be confirmed by the image of the CCD. The function of checking a shot image at the same time as or immediately after shooting is called a release view, and the function of playing back and checking after a lapse of time is called an after view. Images referred to for confirmation are also called with similar names. Also in this specification, a function for confirming a photographed image at the same time as or immediately after photographing and the image are referred to as a release view, and a function for confirming the photographed image after a lapse of time and the image are referred to as an after view. A function for confirming what kind of image is to be photographed before photographing and the image are called a preview.

A camera having an after-view function is described in Japanese Patent Application Laid-Open No. 1-136133. In this camera, the transmitted light of the photographing lens is guided by a half mirror to the silver halide film and the CCD to perform photography, and images of the same composition at the same time can be photographed by the silver halide film and the CCD. The photoelectric conversion time of the CCD is set to be the same as the exposure time of the silver halide film or fixed at a constant value.

[0006]

When an image of a CCD is used as a release view or an after view of a silver halide film, it is possible to confirm whether or not the exposure of the silver halide film is appropriate in addition to confirming the composition. desirable. It is possible to avoid the waste of printing improperly exposed frames, and if it is found that the exposure was inappropriate in the release view, change the settings and immediately re-take the image to ensure that the properly exposed image is obtained. It becomes possible to shoot.

However, it is difficult for the camera disclosed in the above-mentioned publication to know whether or not the exposure of the silver halide film is appropriate based on the image of the CCD. If the photoelectric conversion time of the CCD is fixed at a fixed value, C
The brightness of the image of the CD does not correspond to the brightness of the image of the silver halide film, which changes according to the shutter speed. Even if the photoelectric conversion time is the same as the exposure time of the silver halide film, if the sensitivity of the silver halide film changes, the brightness of the CCD image will not correspond to the brightness of the silver halide film image.

If a silver halide film having constant sensitivity is used and the photoelectric conversion time is made equal to the exposure time, the brightness of the silver halide film image can be known from the CCD image.
There is a major restriction of keeping the film sensitivity constant.
Moreover, unless the brightness of the image of the CCD and the brightness of the image of the silver halide film are made to match, there will always be a certain difference in brightness between the two images. In this case, the exposure condition for making the silver halide film proper exposure cannot be directly obtained from the image of the CCD, and it is necessary to set the exposure condition based on experience and the like in consideration of the difference in brightness.

It is desirable that the brightness of a silver halide film image can be confirmed in a release view or an after view even when flash light emission is performed to compensate for insufficient brightness of an object to be photographed. A camera having such a function has not been conventionally known.

[0010] The present invention relates to a photographing method using a silver halide film and CC.
An object of the present invention is to provide a camera which can simultaneously perform shooting by D and easily know whether the exposure of the silver halide film is appropriate or not based on the brightness of the image of the CCD.

[0011]

In order to achieve the above-mentioned object, according to the present invention, a first photographing means using a silver halide photosensitive method, a second photographing means using a photoelectric conversion method, and a second photographing means are provided. Display means for displaying a photographed image, wherein the camera simultaneously performs photographing by the first photographing means and photographing by the second photographing means, wherein the image photographed by the first photographing means and the second photographing Exposure is controlled so that images taken by the means have the same brightness, and the image taken by the second photographing means is displayed on the display means.

Although there is a difference in sensitivity between the first photographing means and the second photographing means having different photographing methods, images of the same brightness can be obtained by controlling the exposure completely or partially independently. . By displaying the image photographed by the second photographing means on the display means, it is possible to know the brightness of the image of the first photographing means.

A main lens having a first stop, light splitting means for splitting light transmitted through the main lens into a first light and a second light and providing the first light to a first photographing means; A relay optical system having a second aperture and guiding the second light to the second photographing means, wherein the brightness of the image photographed by the second photographing means is the brightness of the image photographed by the first photographing means. It is preferable to control the exposure of the second photographing means so as to match the brightness.

The amount of light guided to the second photographing means can be set separately from the amount of light guided to the first photographing means by the second stop of the relay optical system. 1
Irrespective of the sensitivity of the silver halide photosensitive agent used in the photographing means, the brightness of the image obtained by the second photographing means can be made to match the brightness of the image photographed by the first photographing means. By displaying the image photographed by the second photographing means on the display means, the brightness of the image of the first photographing means can be determined.

According to the present invention, there are also provided a first photographing means using a silver halide photosensitive method, a second photographing means using a photoelectric conversion method, a light emitting means for emitting a flash light toward an object to be photographed, and a second photographing means. Display means for displaying an image photographed by the first photographing means, wherein the photographing by the first photographing means and the photographing by the second photographing means are performed simultaneously with the emission of the light emitting means. The exposure is controlled so that the image to be captured and the image captured by the second capturing device have the same brightness, and the image captured by the second capturing device is displayed on the display device.

In particular, the exposure of the first photographing means is controlled by flash light control, and the relative sensitivity of the second photographing means is controlled by the first sensitivity.
The brightness of the image photographed by the second photographing means is adjusted to the brightness of the image photographed by the first photographing means by matching the sensitivity of the photographing means.

By controlling the exposure of the first photographing means by flash light control, the image of the first photographing means has an appropriate brightness. At this time, if there is a difference in sensitivity between the first imaging unit and the second imaging unit, the brightness of the image of the second imaging unit will not be the same as the brightness of the image of the first imaging unit. By adjusting the relative sensitivity of the second photographing means to the sensitivity of the first photographing means, for example, by adjusting the output gain of the photoelectric conversion, the brightness of the image of the second photographing means is adjusted to the image of the first photographing means. Brightness can be the same. By displaying the image photographed by the second photographing means on the display means in this way, the brightness of the image of the first photographing means is confirmed.

More specifically, a main lens having a first aperture, a light splitting means for splitting the light transmitted through the main lens into two and giving one of the split lights to a first photographing means, A relay optical system having an aperture stop and an ND filter capable of changing the transmittance, and guiding the other light split by the light splitting means to the second photographing means, and the amount of flash light transmitted through the main lens and measured. The camera is provided with a light control device that performs light control.

The amount of light guided to the second photographing means changes depending on the setting of the second aperture of the relay optical system and the transmittance of the ND filter. By adjusting these, the brightness of the image photographed by the second photographing unit is made to match the brightness of the image photographed by the first photographing unit.

In order to achieve the above object, the present invention also provides a first photographing means using a silver halide photosensitive method, a second photographing means using a photoelectric conversion method, and a light emitting means for emitting a flash light toward an object to be photographed. And light measuring means for measuring the amount of light from the object to be photographed and outputting a signal when the measured amount of light reaches a predetermined amount, and performing photographing by the first photographing means with light emission of the light emitting means. In a camera which simultaneously performs photographing by the second photographing means, the silver halide exposure of the first photographing means and the photoelectric conversion of the second photographing means are simultaneously started, and then the flash light emission of the light emitting means is started. The photoelectric conversion of the means is terminated by the output signal of the photometric means.

The photoelectric conversion of the second photographing means starts at the same time as the silver halide exposure of the first photographing means, but ends when the amount of light received by the photometric means reaches a predetermined amount. At this time, the flash emission and the silver halide exposure of the first photographing unit may be continued. By setting a predetermined amount, which is a criterion for judging whether the photometric unit outputs a signal, based on the sensitivity difference between the silver halide film and the photoelectric conversion element or the like, the image of the first photographing unit and the image of the second photographing unit Brightness can be the same.

[0022]

FIG. 1 shows a first configuration example of a camera according to the present invention. This camera is a single-lens reflex type focal plane shutter type camera. The camera body C and the taking lens L are configured separately, and various interchangeable lenses can be attached to the camera body C. Here, a case where a zoom lens is attached as the taking lens L is shown as an example. .

This camera divides the light transmitted through the taking lens L and splits it into two light fluxes, guides one of the light fluxes to a silver halide film to expose and record the silver halide film, and records the other. To a photoelectric conversion element (CCD) to record a video signal. The camera body C is provided with a display device, and displays the video signal generated from the output of the CCD, so that the CCD and the display device also function as a finder. Hereinafter, each component of the camera will be described. Members provided in the camera body C are denoted by reference numerals starting with C, and members provided in the photographing lens L are denoted by reference numerals beginning with L.

Operation rings L01 and L03, which rotate in the circumferential direction, are provided on the outer surface of the fixed lens barrel L13 of the taking lens L. These are operated and rotated by the photographer. An encoder L02 for detecting rotation of the operation ring L01 is provided inside the operation ring L01, and an encoder L0 for detecting rotation of the operation ring L03 is provided inside the operation ring 03.
4 are provided. The operation ring L01 is for adjusting the focal position of the photographing lens L, and the operation ring L03 is for adjusting the focal length. Here, a power focus and a power zoom, in which a focal position and a focal length are adjusted by a motor according to a manual operation of a photographer, are employed.

L05 is a focal length detector for detecting the set focal length of the taking lens L. L07 is a zoom motor for changing the focal length of the taking lens L, L0
Reference numeral 8 denotes a zoom motor monitor for detecting the rotation state of the zoom motor L07, and is composed of, for example, a photo interrupter. L09 is a focus motor that adjusts the focal position of the photographing lens L, and L11 is a diaphragm that regulates a light beam transmitted through the photographing lens L. Reference numeral L12 denotes an aperture control unit, which includes a drive unit including a stepping motor for opening and closing the aperture L11 and a detection unit for detecting the state of the aperture L11. L10 is an AF / MF switch operated by the photographer to switch the focus adjustment between an automatic adjustment (AF) mode and a manual adjustment (MF) mode. Reference numeral L06 denotes an arithmetic control unit for controlling the focal length, focal position, and aperture adjustment of the photographing lens L, which is constituted by a microcomputer (hereinafter, also referred to as a lens microcomputer).

When the operation ring L01 for adjusting the focus position is operated while the AF / MF switch L10 is set to the MF mode, the rotation of the operation ring L01 is controlled by the encoder L02.
And transmitted to the lens microcomputer L06.
The lens microcomputer L06 performs an arithmetic process on the detection output of the encoder L02, and based on the result, focus motor L06.
09 is driven to perform focus adjustment. When the operation ring L03 for adjusting the focal length is operated, its rotation is detected by the encoder L04 and transmitted to the lens microcomputer L06. The lens microcomputer L06 performs an arithmetic operation on the output of the encoder L04, and drives the zoom motor L07 based on the result to perform zoom adjustment. Lens microcomputer L
Reference numeral 06 also supplies a control signal to the aperture control unit L12 to control the opening and closing of the aperture L11 and regulates a light beam passing through the photographing lens L. Information for controlling the aperture is provided from the camera body C to the lens microcomputer L06.

A flash & light F can be mounted on the upper part of the camera body C. Flash & Light F
Can emit flash light and continuously emit quantitative light, and irradiate a subject for a short time or a long time. Both are used for the purpose of compensating for the insufficient light quantity of the subject, but mainly flash light is used for photographing with a silver halide film and quantitative light is used for photographing with a CCD. The light emission of the flash & light F is controlled by a built-in control unit F01. In this embodiment, the flash & light F and the photographing lens L are formed separately from the camera body C, but they may be integrally formed.

The camera body C is provided with an arithmetic and control unit (hereinafter, also referred to as a main microcomputer) C01 composed of a microcomputer for controlling the camera body. The main microcomputer C01 communicates not only with the main body but also with the lens microcomputer L06 via the communication contact C30, communicates with the flash & light control unit F01 via the communication contact C20, and obtains information necessary for the photographing operation. Acquisition and control instructions.

Specifically, from the lens microcomputer L06,
The lens obtains fixed information specific to the taking lens L, such as the open aperture value and the longest and shortest focal lengths, and information on the current setting conditions such as an AF / MF switch, focal length, and focal position. Microcomputer L06
, Information on conditions to be set in photographing, such as an aperture value and a focus position, is provided. Flash & light control unit F
In addition to the fixed information including the maximum and minimum irradiation angles, information necessary for controlling the operation of each light emission such as completion of light emission preparation is obtained from the control unit F01. And a signal instructing start and stop of light emission.

In the camera body C, reference numeral C04 denotes a pellicle mirror which divides the light passing through the photographing lens L into transmitted light and reflected light, and uses a first photographing unit using a silver halide film and a CCD using a CCD. Guide to the 2nd imaging section. C07 is a shutter, C06 is a drive unit of the shutter C07, C0
Reference numeral 9 denotes a film supply unit for supplying and rewinding the silver halide film C08, and these constitute a first photographing unit.

Reference numeral C05 denotes a movable total reflection mirror for auto-focus provided behind the pellicle mirror C04 (hereinafter, also referred to as a sub-mirror).
4 Reflect the transmitted light downward. Submirror C05 is the first
When the photographing is performed by the photographing unit, the light beam from the pellicle mirror C04 to the film C08 is retracted by a mechanism (not shown) to a position where the light beam does not block.

Below the sub-mirror C05, there is provided a focusing state detecting section (hereinafter also referred to as AF module) C02. The AF module C02 is disposed at a position substantially equivalent to the silver halide film C08, and receives the light reflected by the sub-mirror C05 to detect a focused state in the first imaging unit. The AF module C02 has one or a plurality of pairs of line sensors, and detects an in-focus state by a so-called phase difference detection method based on a distance between images on the paired line sensors.

A condenser lens C10 and a reflection mirror C11 are provided above the pellicle mirror C04. The light reflected by the pellicle mirror C04 is made thinner by the condenser lens C10, and then the mirror C
11 guides the camera body rearward. Mirror C1
Reference numeral 1 is partially translucent, and above it is provided a luminance detecting section (hereinafter also referred to as an AE sensor) C12 composed of a photometric element. The AE sensor C12 receives the light transmitted through the mirror C11 and detects the brightness of the subject. The exposure of the silver halide film C08 is performed by the AE sensor C12.
Is controlled based on the photometric result of

C13 is an ND filter, which is configured so that the light transmittance can be changed in several steps from the total transmission. This light transmittance is determined by the ND filter control unit C1.
5 is set. C14 is a relay optical system having a stop C18. Although the photographing areas of the first photographing unit and a second photographing unit, which will be described later, are different, the photographing field angles of both photographing units are almost matched by the relay optical system C14. C19 is a control unit of the relay optical system C14, and sets the stop C18 of the relay optical system. C16 is an optical low-pass filter, and C17 is an IR (infrared) cut filter.

C21 is a CCD as an image sensor,
C23 is controlled by a command from the main microcomputer C01.
CCD drive unit for giving a signal (field shift pulse) for instructing start and end of photoelectric conversion to D, C22
Is an imaging processing unit (hereinafter, also referred to as an A / D converter) which samples the analog output of the CCD and further converts it into a digital signal. C24 is an image processing unit which processes the output of the A / D converter C22 and converts it into an image signal. Yes, these constitute the second photographing unit.

The exposure for video shooting by the second shooting unit is controlled by an electronic shutter using a field shift pulse. The time from when the CCD starts photoelectric conversion by the field shift pulse to when the accumulated charge is discharged by the next field shift pulse corresponds to the electronic shutter speed. Exposure for video shooting is controlled based on the amount of light received by the CCD itself, and the CCD also functions as a photometric element of the second shooting unit.

Although not shown, the image processing unit C24 has an A / A
A process unit that performs γ conversion, white balance (WB) conversion, and conversion into a luminance / color difference (Y / C) signal on the signal from the D converter C22 to generate an image signal, and stores the image signal from the process unit. A first storage unit, an arithmetic control unit that performs image processing in accordance with an instruction from the main microcomputer C01, a second storage unit that stores an image signal from the arithmetic control unit, and a super-in for superimposing characters on the image signal. It consists of a pose part.

The ND filter C13 and the aperture C18 of the relay optical system C14 are different in the sensitivity between the silver halide film and the CCD as the image pickup device, the condenser lens C10 of the light guided to the second photographing unit, and the relay optical system. C14
This is provided to correct the increase in the amount of light per unit area due to In any case, it is possible to reduce the amount of light guided to the second imaging unit.

As a medium for recording the image of the second photographing unit, a magnetic medium such as a magnetic tape or a magnetic disk, an optical medium such as a digital video disk (DVD) or a mini disk (MD), or a flash memory or the like Various things such as a semiconductor storage medium can be used. Here, a magnetic tape C28 is used as a recording medium so that a home VTR device can easily view and view an image.

C26 is a magnetic head for writing and reading on the magnetic tape C28, C36 is a driving unit for the magnetic tape C28, and C25 is a recording and reproducing unit for encoding and decoding image signals. The image signal of the image processing section C24 is recorded on the magnetic tape C28 via the magnetic head C26 by the recording / reproducing section C25, and the image signal recorded on the magnetic tape C28 is read by the magnetic head C26 and reproduced by the recording / reproducing section C25. Is done. C27 is a display unit that displays an image (hereinafter, also referred to as EVF), and is composed of a color liquid crystal display device (LCD). The display unit C27 functions as a finder monitor when the second imaging unit is performing imaging, and the display unit C27 functions as a reproduction monitor when an image on the magnetic tape C28 is being reproduced.

C31 is an audio processing unit for processing audio collected by the microphone C34 provided at the front of the camera body. The audio signal output from the audio processing unit C31 is supplied to the recording / reproducing unit C25, and is recorded on the magnetic tape C28 together with the image signal from the image processing unit C24. C33
Is a speaker, which outputs a reproduced sound when the image on the magnetic tape C28 is reproduced. A power supply unit C29 supplies power to the camera body C, the taking lens L, and the flash & light F.

Reference numeral C03 denotes a camera shake detection unit which detects the vertical and horizontal movements of the camera and notifies the main microcomputer C01 of the movement. The main microcomputer C01 operates the A / D converter C2 so as to cancel the detected camera movement.
An instruction to shift the area for sampling the output of the CCD is given to 2. As a result, camera shake correction is performed on the image captured by the second capturing unit.

COP is an operation unit, which is composed of operation members such as buttons, levers, switches and the like. The photographer operates various members of the operation unit COP to set various modes and input information necessary for photographing. C35 is a display for displaying the status of the camera, and is composed of an LCD.

Reference numeral C32 denotes a connector section for connecting to an external device, and includes a main microcomputer C01 and an image processing section C2.
4, and the audio processing unit C31 is connected to another electronic device. It is possible to externally supply control information to the main microcomputer C01 through the connector section C32 to control the operation of the camera, and supply image signals and audio signals to external devices. In addition, the audio processing unit C31 can record the audio signal given from the external device on the magnetic tape C28 instead of or superimposed on the audio signal from the microphone C34.

When the power supply is started by operating the main switch provided in the operation unit COP, the main microcomputer C
01 is a control signal supplied to the CCD driving section C23 to
Is started. This output signal is provided to an image processing unit C24 via an A / D converter C22 and is converted into an image signal. The output signal of the image processing unit C24 is supplied to the image display unit C27, and the image is displayed in color. During this time, according to the operation of the operation unit COP, the recording of the image signal on the magnetic tape C28 and the photographing with the silver halide film C08 are performed independently or in parallel.

FIGS. 2 to 5 show the appearance of the camera, and FIG. 6 shows information displayed on the display section C35. 2 shows the top of the camera, FIG. 3 shows the back, FIG. 4 shows the front, and FIG. 5 shows the bottom. In FIG. 2, COP09 is an operation mode changeover switch also serving as a main switch. When the operation mode changeover switch COP09 is set to the OFF position, the camera is in a non-operation state, and the simultaneous shooting mode (hereinafter referred to as P
M mode), a silver halide photography mode for photographing silver halide photographs at the PH position (hereinafter referred to as PH mode), and a video photography mode for recording a video movie at the MV position (hereinafter referred to as MV mode). .

The operation mode changeover switch COP09
Is set to the V position, a playback mode (hereinafter, referred to as V mode) for playing a recorded video movie, and when the SV position is set, a still video shooting mode (hereinafter, SV mode) for shooting and recording a video still image by the second shooting unit. ), And when set to the E position, an edit mode (hereinafter, referred to as E mode) for rewriting information recorded in the photographing information recording unit on the silver halide film is set.

COP01 is a shutter release button used for silver halide photography, outputs a signal S1ON for starting automatic focusing and photometry in the first stroke, and performs photography by the first photography unit in a further deeper second stroke. The signal S2ON for starting is output. COP02 is a mode switching dial for switching the aperture value and shutter speed in silver halide shooting and video shooting, and for selecting a shooting scene and switching the exposure mode of the silver halide film. The photographing scene can be selected by turning the mode switching dial COP02 while pressing the mode button described later, and the mode switching dial C while pressing the program button described later.
By turning OP02, A (aperture priority) mode, S
(Shutter speed priority) mode and M (manual) mode can be switched.

COP03 is a deck open button for taking out a magnetic tape as a recording medium. By operating this button, the grip portion is opened and the cassette tape C28 is opened.
Can be attached to and detached from the deck. COP04 is MV and P
In the M mode, it functions as a fade button for starting fade-out, and in the PH and SV modes, it functions as a trigger button for still image preview. COP05 is a lens exchange button for removing the taking lens L from the camera body C. COP06 is a red-eye reduction button for setting an action for reducing red-eye when using a flash in the PH and SV modes.

A mode button COP07 is used in combination with the mode switching dial COP02 as described above.
Used for setting a scene select mode such as a portrait or a sports mode in the H, MV, and SV modes. COP0
Reference numeral 8 denotes a film cartridge exchange button for loading and unloading a silver halide film cartridge, COP10 denotes a switch for switching the screen size during silver halide shooting, and COP11 denotes a switch for switching a video movie screen. C20 is a hot shoe for mounting the flash & light F.
COP12 is a program button, and when used alone, sets the shooting mode to program. When used simultaneously with the mode switching dial COP02 as described above, the A, S, and M modes can be selected in the PM, PH, MV, and SV modes.

C35A is an LCD constituting the display section C35
As shown in FIG. 6, various information about the camera such as the set mode and the remaining power of the power supply unit C29 is displayed. The COP 22 is a button for switching between single shooting and continuous shooting in the PH and SV modes and operation and non-operation of the self-timer.

In FIG. 3, the COP 13 is a photographing lens L
Like the zoom ring L03, the zoom button changes the focal length of the taking lens L. COP14 is PM, MV
In the mode, this is a recording ON / OFF button for controlling the start and end of recording on the magnetic tape C28. In the PH and SV modes, while pressing this button, the above-mentioned preview trigger button COP04
By pressing the button, an image in the aperture open state can be displayed on the EVF. Also, when the mode switching dial COP02 is switched while pressing this button in the M mode, the aperture value is switched.

The COP 15 is an ON / OFF button for camera shake correction control in the PM and MV modes. In the PH and SV modes, the exposure can be corrected by pressing the button and switching the mode switching dial COP02. COP16, COP20
Are the LCD unit pop-up buttons (1) and (2). By operating these buttons, the EVF
Can be changed so that it can be used not only for eye level but also for waist level shooting.

The COP 17 is a flash forced light button in the PH and SV modes. COP 18 is an ON / OFF button for displaying a message on the EVF. COP19 is V
These buttons are used for adjusting the volume in the mode and adjusting the image on the EVF (brightness, hue, etc.). C33 is a speaker.

In FIG. 4, C34 is a stereo microphone, and C35B is a lamp that emits light when the self-timer is activated or when red-eye is reduced. In FIG. 5, C32 is the aforementioned connector portion, C40 is the lid of the battery storage portion, and C44 is the tripod hole. COP 21 is an auto-rewind button, which can be used to rewind even in the middle of the film.

FIG. 7 schematically shows a second configuration example of the camera of the present invention. The camera having this configuration is the AE sensor C shown in FIG.
12, two photometric elements C12a and C12b are provided. The first photometric element C12a is a relay optical system C
14 measures the reflected light of a half mirror C41 disposed on the optical path from the CCD imaging device C21 to the CCD imaging device C21, and the second photometry device C12b measures the silver halide film C08 or the shutter C0.
7 is measured. These differences and mirror C
Except that 11 is a total reflection mirror, there is no difference in configuration between the two cameras.

FIG. 8 shows a third configuration example of the camera of the present invention. This camera is a two-lens type lens shutter camera. This camera performs photography with a silver halide film and video photography with a CCD similarly to the camera shown in FIG. 1, and members having the same functions are given the same reference numerals and description thereof will be omitted. . In FIG. 8, LF is a photographic lens for a silver halide film, and C50 is a shutter also serving as an aperture. C51 is a shutter control unit that controls opening and closing of the shutter C50 according to a command from the main microcomputer C01. LE is a photographing lens for CCD. For simplification, a mechanism related to focusing, a mechanism related to zooming, and a mechanism related to audio processing are not shown.

FIG. 9 shows a fourth configuration example of the camera of the present invention. This camera has a first photometric element C12a for measuring light guided to the CCD similarly to the second configuration, instead of the AE sensor C12 of the third camera shown in FIG. 8, and a brightness of the silver halide film. And a second photometric element C12b for detecting

In general, the size of a silver halide film is very different from that of a CCD. FIG. 10 shows the size of the light receiving range of the 135 film, and FIG. 11 shows the size of the light receiving range of the CCD. Table 1 shows the diagonal ratio β between the silver halide film and the CCD.
Is shown. The commonly used 1/2 inch to 1 /
When using a CCD up to 4 inches, simply use the diagonal ratio β
Comparing only this, the reduction ratio of the relay optical system shown in FIGS. 1 and 7 is β = 1/4 to 1/10.

[0060]

[Table 1]

In each of the cameras of the first to fourth configurations, in PH (silver film) mode and PM (simultaneous photographing) mode, when photographing with a silver film, CCD photographing is performed in parallel. . Therefore, the CCD
As a preview to know what kind of image will be shot on the silver halide film before shooting, or to check what kind of image was shot immediately after shooting or at some time after shooting It can be used as a release view or as an after view.

The CCD discharges electric charges accumulated by photoelectric conversion and performs new photoelectric conversion by a field shift pulse normally given at a constant period of 1/60 second. According to the present invention, when photographing with a silver halide film and photographing with a CCD are performed in parallel, the exposure of the silver halide film can be adjusted to the photoelectric conversion of the CCD at a fixed period (hereinafter referred to as movie release priority). The period of the photoelectric conversion can be changed to match the exposure of the silver halide film (hereinafter referred to as silver halide release priority).

FIG. 12 shows the flow of the process for determining the release timing. First, it is determined whether or not the camera is in the silver halide shooting mode (step # 2). If the mode is set to the silver halide mode, the silver halide release is prioritized (# 12). If not, the simultaneous shooting mode is set. It is determined whether or not (# 4). When the simultaneous shooting mode is set, it is further determined whether or not a moving image video is being recorded on the magnetic tape C28 (# 6). If moving image video is being recorded, priority is given to the movie release (# 10), and if not, priority is given to the silver halide release (# 12). When the simultaneous shooting mode is not set, the camera is in the MV (movie shooting) mode or the preview mode, and the silver halide release is not performed (# 8).

FIG. 13 shows the flow of photographing processing in the PH (silver salt photographing) mode. When the camera is set to the silver halide shooting mode, first, the CCD driving unit C23 drives the CCD and A
D converter C22, image processing unit C24, display unit (EV
F) The operation of C27 is started (# 22). This allows
A moving video will be displayed on the EVF. Then, it waits for the signal S1ON to be issued by the first stroke of the shutter release button COP01 (step #).
24), automatic focusing and photometry for silver halide photography are started (# 26). Furthermore, a shutter release button COP0
The presence or absence of the signal S2ON by the first second stroke is determined (# 28), and when there is no signal S2ON, the process returns to # 24.

When the signal S2ON is issued, the shutters C07 (FIGS. 1 and 7) and C50 (FIGS. 8 and 9) are opened to start exposing the silver halide film C08, and the shutter is closed after a predetermined time has elapsed. . In addition, one frame or one field of video image is stored in the image processing unit C24 in parallel with the exposure of the silver halide film (# 30). Thereafter, the image stored in the image processing unit 24 is continuously displayed on the EVF (# 3).
2) Then, when the signal S1ON is generated next (# 34), E
The display of the VF is returned to the moving image video (# 36). Next, it is determined whether or not there is a mode setting change (# 38). If there is no change, the process returns to # 24, and if there is a change, the process ends.

The image processing unit C24 includes an A / D converter C2
The digital signal given from 2 is processed and stored for one field. This stored content is usually updated each time a new image is input. The moving image video is displayed by sequentially providing the temporary storage contents to the EVF. The image processing unit C24 has a function of storing image signals for a long period of time in addition to temporary storage. In the storage processing of # 30, the image signal is stored in this long-term storage, and in # 32, this image signal is repeatedly output to the EVF.

The video image displayed at # 32 was taken at the same time as the exposure of the silver halide film, and becomes a release view. It is also possible to display the aperture value, shutter speed, etc. together with the video image on the EVF, which makes it easy to confirm the exposure conditions. If this image is recorded on the magnetic tape C28, it can be used as an after-view. When recording an image, the exposure conditions, silver halide film number and frame number, shooting date and the like are also stored.

FIG. 14 shows the flow of photographing processing in the PM (simultaneous photographing) mode. As described above, the mode is set by operating the operation mode changeover switch COP09, but the video image is recorded on the magnetic tape C28 by the recording O.
The operation is started by operating the N / OFF button COP14. First, the setting state of the recording ON / OFF button COP14 is determined (step # 52), and if a recording start instruction is given, recording on the magnetic tape is started (# 54). Then, the signal S1
The presence or absence of ON is determined (# 56), and if there is a signal S1ON, the presence or absence of signal S2ON is further determined (# 58). When there are no such signals, the process proceeds to # 62.

In response to the signal S2ON, the shutter is opened to start exposing the silver halide film, and the shutter is closed after a predetermined time has elapsed. Further, in order to indicate which field of the video image being recorded corresponds to the image of the silver halide film, a flag signal is recorded on the magnetic tape simultaneously with the start of the exposure of the silver halide film (# 60). The exposure here gives priority to the movie release. After the exposure of the silver halide film is completed, it is determined whether or not a recording end instruction has been issued based on the setting of the recording ON / OFF button COP14 (# 62).
Return to 56. If the recording end instruction has been given, the recording of the video image on the magnetic tape is ended (# 64), and it is determined whether or not the mode setting has been changed (# 66). If there is no change in the mode, the process returns to # 52, and if there is no change, the process ends.

If the instruction to start recording is not given in the determination of # 52, it is determined whether or not the signal S1ON is present (# 68). If the signal S1ON is present, the signal S2ON is further provided.
Is determined (# 70). When there are no such signals, the process returns to # 52. Exposure of the silver halide film is started by the signal S2ON, and the following processing of # 72 to # 78 is the same as # 30 to # 36 of FIG. Here, no video image is recorded, and the release timing is silver halide release priority. After the display of the EVF is changed from a still image to a moving image in # 78, the process returns to # 52.

The field in which the flag signal is recorded in # 60 is used as an after view. That is,
By reproducing and displaying the image in this field at any time after the photographing is completed, the image photographed on the silver halide film can be confirmed.

As described above, in the PH mode, priority is given to the silver halide release. The timing of this photographing will be described with reference to FIG. 15 using the cameras of the first and second configurations as examples. In FIG. 15, the horizontal axis represents time, and a is a signal S2 emitted in the second stroke of the shutter release button.
It shows a trigger signal generated by the main microcomputer that has detected ON. b indicates the opening and closing operation of the focal plane shutter C07, SF indicates traveling of the front curtain, and SR indicates traveling of the rear curtain. The shutter opens as the front curtain runs,
After full opening, the shutter closes due to the movement of the rear curtain, during which the silver halide film is exposed. Here, an example is shown in which the shutter opening operation is started in synchronization with the end of the pulse of the trigger signal.

G represents a field shift pulse given to the CCD by the CCD driving section C23. The field shift pulse is usually given to the CCD at a constant period of 1/60 second. When the CCD receives the field shift pulse, the CCD accumulates the charge accumulated by the photoelectric conversion up to that time into A
/ D converter C22. With this, CCD
Is lost. After receiving the field shift pulse, the CCD starts the next photoelectric conversion after a lapse of a minute fixed time corresponding to the retrace period.

H and j represent image signals processed by the image processing section C24 and stored for one field, h is the one stored in the first storage section, and j is the second storage section. Is stored. k represents an image displayed by the EVF, and is the same as the image in the second storage unit of the image processing unit C24. The EVF displays the image signal provided from the image processing unit C24 until the next image signal is provided. Symbols such as A and A 'added to g, h, j and k indicate the correspondence between the images of the CCD, the image processing unit and the EVF. For example, the image A' stored in the image processing unit is This is the result of processing the captured image A.

The trigger signal (a) is issued at an arbitrary time in response to the photographer's operation of the shutter release button, and does not coincide with a fixed period field shift pulse.
In the silver halide release priority, a field shift pulse P1 is generated by a trigger signal in order to minimize the time lag from the operation of the shutter release button to the start of exposure (g). That is, a new field shift pulse P1 is issued by the trigger signal regardless of the elapsed time from the previous field shift pulse. For this reason, the CCD immediately outputs the image C that was being captured when the trigger signal was issued, and starts capturing a new image D (g). Thereafter, the field shift pulse is issued at a normal 1/60 second cycle, and the integration time of the period corresponding to the exposure of the silver halide film, that is, the photoelectric conversion time is 1/6.
0 seconds.

When the trigger signal is issued, the image processing section C24 stores the image B '(h, j), and the EVF is displaying the image B' (k). Image processing unit C24
Gives the image C and processes it, but does not store it in the second storage unit or output it to the EVF. Therefore, the EVF continues to display the image B ′ (k).

When given the image D during the silver halide film exposure period, the image processing section C24 stores the image D 'as an image D' for a long time (j) and outputs it to the EVF. The EVF immediately displays the image D '(k). Thereafter, the image processing unit C24
Repeatedly outputs the image D ′ stored for a long time to the EVF until the signal S1ON is issued. During this time, the image supplied from the CCD is processed and temporarily stored (h), but these are not output to the EVF (j). For this reason, the EVF continues to display the image D ′ (k). Therefore, the image D photographed on the silver halide film
Is displayed as an image D 'immediately after shooting, and the image D' functions as a release view.

In the above-described synchronous control, the image C immediately before the image D during the silver halide film exposure period is not displayed, and discontinuity occurs between the images B 'and D' on the display of the EVF. However,
The missing image C 'has a short period (at most one field, that is, 1/60 second) and is just before switching from a moving image to a still image, so that the photographer does not feel much discomfort.

FIG. 16 shows the timing of shooting during video image recording. As in FIG. 15, a represents a trigger signal, b represents a shutter opening / closing operation, g represents a field shift pulse, h and j represent images stored in the image processing section C24, and k represents an EVF display image. m is a flag signal recorded on the magnetic tape C28 together with the image signal. As aforementioned,
During video image recording, priority is given to movie release, and CCD
The silver halide film is exposed in accordance with the photoelectric conversion of the above. Therefore, the field shift pulse has a constant period (g), and the stored image (h, j) of the image processing unit C24 and the display image (k) of the EVF also have a constant period.

The shutter is opened in synchronization with the first or subsequent field shift pulse after the trigger signal (b). The figure shows an example synchronized with the second field shift pulse. The image processing unit C24 treats the image D 'during the period corresponding to the exposure of the silver halide film in the same manner as other images (h, j), and therefore, the image D' is not displayed as a still image on the EVF. Image D 'on magnetic tape
At the same time, a flag signal is recorded (m) and is used for after-view search at the time of reproduction.

In the case of the silver halide release priority, a discontinuity point occurs in the image displayed on the EVF. However, in the above-described movie release priority shooting, the discontinuity point appears in the EVF display image or the image recorded on the magnetic tape. Does not occur, and a continuous natural moving image can be displayed even when the recorded image is reproduced.

In the present invention, a video image is used as a release view or an after view even in flash photography. For this reason, in flash photography, it is necessary to emit the flash while avoiding the retrace period of the video image, and it is necessary to synchronize the exposure of the silver halide film, the photoelectric conversion of the CCD, and the flash emission. . The control of the synchronization between the exposure of the silver halide film and the photoelectric conversion of the CCD in flash photography will be described with reference to FIGS.

FIG. 17 is a timing chart showing the first synchronous control of flash photography, in which the horizontal axis represents time.
This control is used for shooting in a PH (silver salt shooting) mode. In FIG. 17, a is the second shutter release button.
It shows a trigger signal issued by the main microcomputer which has detected the signal S2ON issued in the stroke. b indicates the opening and closing operation of the focal plane shutter C07 of the camera having the first and second configurations. c is the third and fourth
The opening / closing operation of the lens shutter C50 of the camera having the above configuration is opened, and the shutter is opened and closed again to the aperture corresponding to the set aperture value.

D represents a flash trigger signal applied to the flash & write F for instructing start of flash emission, and e represents a flash extinguishing signal instructing termination of flash emission. f represents the flash emission state, and the flash is emitted from the beginning of the flash trigger signal to the beginning of the flash extinguishing signal. The flash extinguishing signal is issued when a predetermined time has elapsed after issuing a flash trigger signal in flashmatic shooting, and the amount of light received by the AE sensors C12 and C12b has reached a predetermined value in TTL direct dimming shooting. Sometimes emitted. g is a field shift pulse, h and j are images stored in the image processing unit C24, and k is an EVF.
It is a display image of.

The trigger signal (a) is issued at an arbitrary time in response to the photographer's operation of the shutter release button. As a result, the opening of the shutter starts (b, c), and a flash trigger signal is issued when the opening is completed (d). In response to this, the flash emits light (f), and when the flash extinguishment signal is issued at the above-mentioned time (e), the light emission ends. Thereafter, the shutter is closed (b, c), and the exposure of the silver halide film is completed.

At the same time as the start of the shutter opening operation, a field shift pulse P1 is issued (g). That is, a new field shift pulse P1 is issued by the trigger signal regardless of the elapsed time from the previous field shift pulse. For this reason, the CCD immediately outputs the image C that was being captured when the trigger signal was issued, and starts capturing a new image D (g). Thereafter, the field shift pulse is issued at a period of 1/60 second of a normal period, and the integration time of the period including the flash emission is 1
/ 60 seconds.

When the trigger signal is issued, the image processing section C24 stores the image B '(h, j), and the EVF is displaying the image B' (k). Image processing unit C24
Receives the image C, processes it immediately and temporarily stores it as the image C ', but does not output it to the EVF. Therefore, the EVF continues to display the image B ′ (k). Note that since the image C is one in which the photoelectric conversion is interrupted on the way, the image C is darker than an image in a normal field, and the image C ′ is not suitable for display.

When given the image D at the time of flash emission, the image processing section C24 stores the image D 'as an image D' for a long time (j) and outputs it to the EVF. The EVF immediately displays the image D '(k). After that, the image processing unit C24
The image D ′ stored for a long time is repeatedly output to the EVF. During this time, the image supplied from the CCD is processed and temporarily stored (h), but these are not output to the EVF (j). For this reason, the EVF continues to display the image D ′ (k). Therefore, the image D photographed on the silver halide film by emitting the flash is displayed as the image D 'immediately after the photographing, and the image D' functions as a release view.

In the above-described synchronous control, the photoelectric conversion time of the CCD at the time of flash emission, that is, the electronic shutter speed is 1/60 sec. On the other hand, the field length in the image processing unit C24 becomes short and not constant when the trigger signal is issued, but in this mode, no recording is performed on the magnetic tape C28, so that no inconvenience occurs. Also, the field length of the EVF display is temporarily increased and becomes inconsistent, but there is no problem in observing the viewfinder image. The images displayed on the EVF are image B 'and image D'
Is discontinuous, but the number of missing images C ′ is at most 1
Since it is a short period of the field and switching from a moving image to a still image is performed, there is no uncomfortable feeling.

FIG. 18 is a timing chart of the second synchronous control at the time of flash photography. This control is also used in the PH (silver salt photography) mode. Trigger signal (a), opening and closing of shutter (b, c) and flash emission (d,
e and f) are exactly the same as those in FIG. 17, and a duplicate description will be omitted.

In this synchronous control, a field shift pulse P1 is issued in synchronization with the shutter opening operation by the trigger signal, and a next field shift pulse P2 is issued in synchronization with the flash extinguish signal (g). Thereafter, the field shift pulse is issued at a normal 1/60 second cycle. The CCD outputs an image C in the middle of shooting by the field shift pulse P1. Thereafter, the image C on the vertical transfer path of the CCD is discharged at a high speed due to the next field shift pulse P2, and is not stored in the image processing unit C24 (h). The EVF continues to display the image B ′ being displayed (j, k).

The CCD outputs an image D at the time of flash emission by the field shift pulse P2 (g), and the image processing section processes the image D and stores it as an image D 'for a long time (j). The image processing unit outputs an image signal to the EVF at a constant period regardless of whether or not photographing is performed on a silver halide film.
After outputting the temporarily stored image B ′, the image processing unit 1/60
When seconds have passed, the image D 'that has been stored for a long time at that point
Is output, and thereafter, this output is repeated for a predetermined period. During this time, the image processing section processes the image given from the CCD and temporarily stores it (h), but does not output it. EVF
, The image D ′ is displayed as the release view for a predetermined period following the image B ′ (j, k).

In this synchronous control, the electronic shutter speed at the time of flash emission is not constant, and the integration of the CCD is ended in synchronization with the end of flash emission. It should be noted that the display image becomes discontinuous by not displaying the image C ′, and the storage time of the image processing unit and E after the field shift pulse P2.
Although there is a difference in the display timing of the VF, these do not cause inconvenience in image observation.

FIG. 19 is a timing chart of the third synchronous control of flash photography. This control is used when shooting in the PM (simultaneous shooting) mode. In this synchronous control, the field shift pulse is always emitted at a constant period of 1/60 second in order to prevent discontinuity in the recorded video image.

The trigger signal (a) is issued when the signal S2ON is issued by the photographer's operation of the shutter release button, and the flash emission preparation for charging and the like, automatic focus adjustment, and photometry are completed. The opening of the shutter is started in synchronization with the first field shift pulse after the trigger signal (b, c), and a flash trigger signal is issued when the opening is completed (d). Thereafter, a flash extinguishing signal is issued at the above-mentioned timing (e), and during this time flash emission is performed (f). Then the shutter is closed (b,
c), the exposure of the silver halide film is completed.

Each time the field shift pulse is applied, the CCD outputs the image being photographed and starts a new photographing (g). The image processing unit sequentially processes all of the images, temporarily stores the images, and outputs the images to the EVF (h,
j). For this reason, all the images photographed by the CCD are sequentially displayed on the EVF (k). The image signal output from the image processing unit is also recorded on the magnetic tape C28. The image C that has undergone flash emission is recorded as an image C ′, and a flag signal is recorded on the magnetic tape together with the image C ′ (m).

EVF when photographing by CCD
Are updated one after another, the image C ′ in which the flash is recorded is short in display time and cannot be used as a release view. However, a flag signal is added to the image C ′ recorded on the magnetic tape, and is easily detected. The after-view function is realized by reproducing the image C ′ from the magnetic tape and displaying it on the EVF after the photographing is completed.

Referring to FIG. 20, a description will be given, with reference to FIG. 20, of a fourth synchronization control of flash photography applied to the cameras having the second and fourth configurations. This synchronous control is used in the PM (simultaneous photographing) mode, similarly to the third control described above. Again, in order to prevent discontinuity in the recorded video image, a field shift pulse is issued at a constant period of 1/60 second, but one field shift pulse is generated during flash emission to adjust the speed of the electronic shutter. insert.

In FIG. 20, a is a trigger signal, b is a focal plane shutter operation, c is a lens shutter operation, d is a flash trigger signal, f is flash emission, g is a field shift pulse, and h and j are images. An image stored in the processing unit, k represents an EVF display image, and m represents a flag signal. The correspondence relationship between the images represented by the symbols A, A ', etc. is also as described above.

E1 is a first light control signal emitted by the main microcomputer C01 when the amount of light guided to the CCD detected by the first light measuring element C12a reaches a first predetermined value, and e2 is a second light measuring signal. This is a second dimming signal generated by the main microcomputer C01 when the amount of reflected light from the silver halide film detected by the element C12b reaches a second predetermined value. FIG. 23 shows the relationship between the light emission amount of the flash and the first and second dimming signals. In FIG. 23, (a)
And (b) are output signals representing the amounts of light received by the first photometric element C12a and the second photometric element C12b, respectively.
(C) is the light emission amount of the flash. The horizontal axis represents the elapsed time from the start of flash emission.

After the signal S2ON is issued by the operation of the shutter release button, the main microcomputer C01 issues a trigger signal when the preparation for flash emission such as charging, the automatic focus adjustment, and the photometry are completed (FIG. 20, a). The shutter opening operation is started in synchronization with the subsequent first field shift pulse (b, c), and a flash trigger signal is issued upon completion of opening (d). The flash starts emitting light in response to the flash trigger signal (f), and the amount of light received by the first and second photometric elements C12a and C12b increases.

After flash emission, first photometric element C12a
At the time t1 when the output of
3) The main microcomputer C01 sends the first dimming signal to the CCD driving unit C23 to instruct the end of the photoelectric conversion of the CCD.
(E1). Upon receiving the first dimming signal, the CCD driver C23 immediately outputs the field shift pulse P2 to the CC.
Give to D (g). CCD is a field shift pulse P
2 outputs the accumulated charge to the A / D converter C22. As a result, the electronic shutter is temporarily closed, and a new photographing operation is started. Flash emission continues regardless of the field shift pulse P2.

After flash emission, the second photometric element C12b
At the time t2 when the output of FIG.
3), the main microcomputer C01 issues a second dimming signal corresponding to the above-mentioned flash extinguishing signal (e2). As a result, the flash emission ends (f), and thereafter, when the time set as the shutter speed elapses, the shutter is closed (b, c), and the exposure of the silver halide film ends. Exposure of the silver halide film will be controlled by TTL light control.

Each time the field shift pulse is applied, the CCD outputs the image being photographed and starts a new photographing (g). The image processing unit C24 ignores the image D immediately after the field shift pulse P2 inserted between the periodic field shift pulses without processing it, and processes all other images temporarily. And output to the EVF (h, j). The image C ′ obtained by processing the image C in which the flash has been emitted is stored for 1/60 second like the other images. For this reason, all the images captured by the CCD except the image D are sequentially stored in the EVF.
It is displayed at a constant period of 1/60 second (k). All images other than the image D are also recorded on the magnetic tape C28 with a fixed field length. A flag signal is recorded corresponding to the image C 'where the flash has been emitted (m).

In the control examples described so far, the configuration in which the electronic shutter involves the field shift pulse and the high-speed ejection of the vertical transfer path has been described. However, the fifth and sixth flash photography in which unnecessary charges are not ejected to the vertical transfer path are performed. Figure 2 shows a control example of
1, shown in FIG. In these figures, g1 is a field shift pulse, and g2 is a charge discharging pulse. When a charge discharging pulse is given to the CCD, the CCD discharges charges accumulated by photoelectric conversion to a substrate portion opposite to the transfer path. This discharges unnecessary charges.

In FIG. 21, when a trigger signal is issued, the electric charge of the image C which has been subjected to the photoelectric conversion is discharged by the charge discharging pulse P1, and the photoelectric conversion of the new image D is started from this time. When dimming is performed by the dimming signal (e), the field shift pulse P2
The charge is transferred to the vertical transfer path by (g1). Next, at the original timing of the field shift pulse every 1/60 second, the field shift pulse is not applied, and the charge discharging pulse P3 is supplied to the CCD (g2) to discharge the unnecessary charges of the image DD, and at the same time Of the image E is started. At the same time, the charge of the image D previously sent to the vertical transfer path is sent out from the CCD.

The subsequent processing is the same as the second synchronous control for flash photography described with reference to FIG. In this control processing, unlike FIG. 18, the first processing of the image processing unit C24 is performed.
The original image signal for every 1/60 is input to the storage unit.

FIG. 22 shows that the fourth discharge control of the flash photography shown in FIG. 20 uses the charge discharging pulse P3 (g2).
Is used. Also in this case, unnecessary charges of the image D are discharged, and the photoelectric conversion of the new image E is started immediately.

The synchronous control is intended to utilize an image photographed by the CCD as an after-view for flash photographing of a silver halide film. When the image processing unit is used as the release view in addition to the after view, the image processing unit stores the image C ′ that has emitted the flash light for a long period of time, outputs the signals temporarily stored on the magnetic tape one after another, and outputs the long-term signal to the EVF. May be repeatedly output for a predetermined period.

In the fourth synchronous control, the brightness of the image of the CCD and the brightness of the image of the silver halide film are individually measured, and the electronic shutter speed and the flash emission time are controlled in accordance with each measurement result. There are two photometric elements C12a and C12b for measuring the brightness of the images of the CCD and the silver halide film. Instead of providing two photometric elements, the amount of light received by one photometric element may be compared with two predetermined values, and the electronic shutter speed and the flash emission time may be controlled according to the comparison result.

For example, in the camera having the above-described first configuration, the main microcomputer C01 is connected to the AE sensor C1.
This is realized by emitting a first dimming signal when the second output reaches a first predetermined value, and issuing a second control signal when the second output reaches a second predetermined value. . FIG. 24 shows the relationship between the amount of light emitted from the flash and the output representing the amount of light received by the AE sensor. The main microcomputer C01 issues a first dimming signal at t1 when the output value of the AE sensor C12 reaches a first predetermined value A1 'after the start of flash emission,
When reaching the second predetermined value A2 ', a second dimming signal is emitted at t2. Other processes are the same as those of the fourth synchronization control.

In any of the above-mentioned synchronous controls, if the shutter is not opened, photographing by the CCD can be performed without exposing the silver halide film. Therefore, any of the above-described synchronous controls can be applied as a control for preview only by removing the shutter opening operation.

As described above, in the present invention, an image photographed by a CCD is used as a release view, an after view, or a preview of photographing on a silver halide film.
The contents to make the image by D the same as the image by the silver halide film include the composition, the brightness of the image, the appearance of the shadow, the degree of blurring of the image (focus and depth of field), and the degree of blurring of the image (subject Shake and camera shake). It is desirable to satisfy all of these conditions at the same time. However, since the fundamental principle of photography differs between photography using a CCD and photography using a silver halide film, various restrictions arise and it is not always possible to satisfy all the conditions. In the present invention, the CCD image matches the image of the silver halide film with respect to the composition and the brightness of the image, which is the most basic condition in photographing with the silver halide film, and the other conditions are appropriately satisfied.

FIG. 25 shows a configuration relating to the exposure control of the cameras of the first and second configurations. The main microcomputer C01 is provided with an exposure control circuit C01A in addition to a central processing unit (CPU) C01C. The exposure control circuit C01A further includes a silver halide controller C01S and a CCD controller C01V. The CPU is provided with an exposure control mode of A, S, P, M, an aperture value of the taking lens L to be set in the A or M mode, and a shutter speed to be set in the S or M mode from the operation unit COP. And the AF module C0
2 gives distance measurement information. AE sensor C1
2 or the output signals of C12a and C12b and the output signal of A / D converter C22.

The parameters relating to the exposure include the aperture value of the taking lens L and the shutter speed for photographing with a silver halide film, and for photographing with a CCD, the aperture value of the taking lens L and the transmission of the ND filter C13. Rate, the aperture value of the relay optical system C14, the gain of the CCD, and the integration time, that is, the time of photoelectric conversion. These parameters are given to the exposure control circuit C01A.

The exposure control circuit C01A supplies control signals to the aperture control unit L12 and the shutter drive unit C06 of the photographing lens L from the silver halide control unit C01S based on the parameters given by the CPU, and outputs the control signals from the CCD control units C01V to N
D filter controller C15, relay optical system controller C19
And a control signal is given to the CCD driving section C23. The relay optical system controller C19 controls the aperture C18, and the A / D converter C22 controls the gain of the CCD. The CCD driving section C23 changes the integration time by changing the interval of the field shift pulse given to the CCD, and changes the electronic shutter speed.

Although not shown, the cameras of the third and fourth configurations control the exposure in substantially the same configuration.

The control for making the brightness of the CCD image coincide with the brightness of the image of the silver halide film in the cameras of the first and second configurations will be described below. Prior to this, the parameters used and the signs thereof will be described. Keep it. BVS: scene brightness. This is the control luminance at which a proper exposure finish is obtained. <Silver film> SV: Film sensitivity. PV: pellicle mirror transmittance. AVagφ: Open FNo. Of main lens (photographing lens). AVagmin: FNo. Of minimum aperture of main lens. AVag: FNo. Of main lens when shooting. TVag: shutter speed at the time of shooting. BVag: Control brightness for the film. <For CCD> SVCCD: CCD sensitivity. ΔSV CCD: CCD sensitivity gain (gain), which can be continuously adjusted within a range of, for example, ± 3 EV. RV: Pellicle mirror reflectance. βV: Coefficient (reduction magnification coefficient) by a relay optical system (including a condenser lens). If the ratio of the size (length) of the image before and after transmission through the relay optical system is 1: β, βV = 2 · log
₂ β. AVCCD: Open FNo. Of relay optical system. AVCCD: FNo. When shooting with the relay optical system. TVCCD: Electronic shutter speed at the time of shooting. NV: ND filter transmittance. BVCCD: Control brightness for CCD. The above parameters are all represented by APEX values.

The equation (1) holds for the exposure of the silver halide film, and the equation (2) holds for the exposure of the CCD. It should be noted that the influence of the half mirror C41 disposed on the optical path to the CCD of the cameras of the second and fourth configurations is extremely small, and is not considered here. BVag + SV + PV = AVag + TVag (1) BVCDCD + SVCCD + ΔSVCCD + RV + NV = AVCCD + TVCCD (2)

If the expression (3) is satisfied while satisfying the above expressions (1) and (2) for BVag and BVCDCD, the brightness of the CCD image coincides with that of the silver halide film. Become. BVag = BVCDCD = BVS (3)

Furthermore, if the following equation (4) is satisfied, the blur of the CCD image coincides with the blur of the silver halide film image, and if the following equation (5) is satisfied, the blur of the CCD image will be blurred of the silver halide film image. Matches bokeh. TVag = TVCCD (4) AVag + βV = AVCCD (5)

In the cameras of the first and second configurations, the luminous flux split by the pellicle mirror C04 is narrowed by the condenser lens C10 and applied to the CCD via the relay optical system C14 having the stop C18. Here, the opening FNo. Of the aperture L11 of the taking lens L and the relay optical system C
The relationship between the light flux of the light transmitted through the photographing lens L and the light flux of the light transmitted through the relay optical system C14 is classified into the following three types, M, L, and ML, based on the relationship between the aperture FNo.

The type M is the stop C of the relay optical system C14.
When the aperture 18 is opened and the aperture L11 of the imaging lens L is opened, all light transmitted through the imaging lens L enters the CCD without being shaken by the aperture C18. For example, the open FNo. Of the taking lens is 4.0 (AVagφ = 4), the open FNo. Of the relay optical system is 1.0 (AVCCDφ = 0), and the reduction ratio by the relay optical system is １ ／ (βV = −4). ). In type M, equation (6) holds. AVCCDφ ≦ AVagφ + βV (6)

The type L is the stop C of the relay optical system C14.
Only when the aperture 18 is opened and the stop L11 of the taking lens L is stopped down to the minimum diameter, the transmitted light of the taking lens L
All are incident on the CCD without being emitted.
For example, the minimum aperture FNo. Of the photographing lens is 16.0 (AVa
gmin = 8), the open FNo. of the relay optical system is 2.0 (AVC
CDφ = 2), the reduction ratio by the relay optical system is 1/8 (βV
= -6). Equation (7) holds for type L. AVCCDφ ≧ AVagmin + βV (7)

The type ML is intermediate between the type M and the type L, and the equation (8) holds. AVagmin>AVCCDφ-βV> AVagφ (8)

Control for Matching Brightness of CCD Image to Brightness of Silver Halide Film Image Table 2 and FIG.
This will be described with reference to flowcharts in FIGS. Table 2
Shows the classification of the exposure control based on whether Expressions (3), (4), and (5) are satisfied or not, and the relationship between each exposure control and the above-described M, L, and ML types. Things.

[0127]

[Table 2]

In Table 2, A is a control satisfying only the equation (3), B is a control satisfying the equations (3) and (4), and C is a control satisfying the equations (3) and (5). , D represent control satisfying the equations (3), (4) and (5). In addition, those with numbers are controllable, and the numbers represent figure numbers in a flowchart showing a control example. ○
Those marked with a mark are not shown as flowcharts but are controllable. Those marked with a symbol Δ are those that cannot be controlled in terms of structure.

As described above, in the PH mode, the functions of the release view and the after view can be used, and the image of the CCD can be used as a preview. In the PM mode, an after-view function can be used.

FIG. 26 shows a basic flow of the exposure control process. First, initialization is performed in step # 102. PV, RV, βV, SVCC, which are the eigenvalues related to the camera
Then, the sensitivity of the loaded film is read from a film sensitivity detector (not shown) and set as SV. This data is stored in the exposure control circuit of the main microcomputer C01.

When the photographer half-presses the shutter release button (S1 ON), the brightness of the subject is measured by the AE sensor, and the information is transmitted to the CPU of the main microcomputer.
Then, according to the exposure setting (luminance distribution setting such as multi-segment metering and spot metering, correction setting such as exposure correction) by the operation unit COP, it is determined how bright the subject is to be photographed, and the control brightness value BVS And

In step # 104, subject brightness B in silver halide photography
The value of Vag is set to BVS, and the value of the subject brightness BVCCD in video shooting is determined to be BVS in # 106. further#
At 108, the remaining parameter values are determined. This is appropriately determined based on the exposure mode (a program of aperture priority, shutter speed priority, etc.) and the BVS value. For example, in the shutter speed priority, the setting is made so that Expression (4) holds. TVag = TVCCD (4) (repost)

Next, at step # 110, the silver halide film and the CCD
Take a photo. The photographer half-presses the release button (S1O
N), the AF is also performed at the same time, and in this state, the photographing is started by depressing the release button (S2 ON), and each part (ND filter transmittance NV, gain in the image processing circuit of the CCD) according to the determined set value. Setting ΔS
VCCD, main lens aperture AVag, relay optical system aperture A
VCCD, the shutter speed TVag of the silver salt, and the electronic shutter speed TVCCD of the CCD are controlled, and the photographing ends.

FIG. 27 shows an example of the control B for matching the brightness of the image with the degree of blur in the PH (silver salt photography) mode. This control is characterized by simultaneously satisfying Expressions (3) and (4), and is used when the exposure mode is set to the shutter speed priority mode or the like when the shooting mode is the PH mode. BVag = BVCCD = BVS (3) (repost) TVag = TVCCD (4) (repost)

First, initialization is performed in step # 132. That is, PV, RV, β
S from V and SV CCD setting and read film sensitivity
V is set, and the set value is stored in the exposure control circuit of the main microcomputer.

The photographer half-presses the release button (S1 ON)
Then, the brightness of the subject is measured by the AE sensor, and the information is sent to the CPU of the main microcomputer, where the exposure setting (luminance distribution setting such as multi-segment metering and spot metering, correction setting such as exposure correction) is performed by the operation unit COP. ), The brightness of the subject to be photographed is determined and set as the control brightness value BVS. In step # 134, the value of the subject brightness BVag in silver halide photography is set to BVS, and AVag is determined from TVag set by the photographer using the operation unit based on equation (1). BVag + SV + PV = AVag + TVag (1) (repost)

Next, the transmittance NV of the ND filter is set based on the BVS value and the SV value (# 136). For example, when the BVS is large (when the brightness of the subject is high) or when the sensitivity of the mounted film is high, the ND amount is increased and the transmittance is reduced. In step # 138, the value of the subject brightness BVCCD in video shooting is determined as BVS. Further, the setting value of the TVCCD is set to the same value as the TVag in order to equalize the blur of the silver halide image and the video image.

The gain setting of the CCD is 0d as an initial value.
B, that is, ΔSVCDCD = 0 (# 140), and equation (2)
As a result, the value of AVCCD is provisionally determined (# 142). BVCDCD + SVCDCD + ΔSVCDCD + RV + NV = AVCCD + TVCCD (2) (reprinted)

Next, in # 144, it is confirmed whether or not the provisionally determined set value of the AVCCD can be actually set. For example, if the open FNo. Of the relay optical system is 1.4, AVCCD φ = 1, and if the minimum aperture value FNo. = 11 where the small aperture blur is not noticeable, the AVCCD range is 1 to 7. The judgment result is false. However, even in this range, the case where Expression (9) is satisfied is out of the set range (the determination result is true). At this time, the luminous flux incident on the CCD is cut off by the aperture of the main lens. AVCCD <AVag + βV (9)

When the result of the determination in # 144 is false, the photographing is started by depressing the release button (S2 ON) (# 148), and each part (ND) is determined according to the determined set value.
Filter transmittance NV, CCD gain setting ΔSVCC
D, Main lens aperture AVag, Relay lens aperture AVCC
D, the shutter speed TVag of the silver salt, and the electronic shutter speed TVCCD of the CCD are controlled, and the photographing ends. On the other hand, if the determination result is true, the initial value of the ND amount is changed or the gain of the CCD is changed so that AVCCD falls within the set range (# 146). Then, it waits for photographing (# 148).

In this control example, the release button is half-pressed (S1
ON), the photometry is started. However, the process up to # 138 may be performed at the time when the display of the image on the EVF is started, and the exposure of the CCD may be controlled according to the setting. Thereafter, when the release button is half-pressed (S1 ON), the process is restarted from # 134.
By doing so, the time lag from when the release button is fully depressed (S2 ON) is reduced.

Further, when the display of the image on the EVF is started, steps up to # 146 are performed, and further, C
The exposure of the CD may be controlled. Thereafter, when the release button is half-pressed (S1 ON), the process is restarted from # 134. By doing so, the image confirmed by the EVF is always close to silver halide photography.

In this control example, the release button is depressed (S
2ON), the final exposure control including the exposure of the CCD is performed, but when the release button is half-pressed (S1 ON),
146 may be performed, and the exposure of the CCD may be controlled according to the setting. By doing so, by S1ON, both the exposure condition of the silver halide photography and the exposure condition of the video photography can be locked based on the output of the AE sensor C12, and the image confirmed by the EVF becomes close to the silver halide photography. .

FIG. 28 shows an example of the control C for matching the brightness of the image with the degree of blur in the PH (silver salt photography) mode. This control is characterized by simultaneously satisfying Expressions (3) and (5), and is used when the exposure mode is set to the aperture priority mode or the like when the shooting mode is the PH mode. BVag = BVCDCD = BVS (3) (repost) AVag + βV = AVCCD (5) (repost)

First, initialization is performed in step # 172. That is, PV, RV, β
S from V and SV CCD setting and read film sensitivity
V is set, and the set value is stored in the exposure control circuit of the main microcomputer. However, since the type L does not have a combination that satisfies the expression (5) or has only one point, even in the aperture priority mode, the EVF display has only the same image brightness.

The photographer half-presses the release button (S1 ON)
Then, the brightness of the subject is measured by the AE sensor, and the information is sent to the CPU of the main microcomputer, where the exposure setting (luminance distribution setting such as multi-segment metering and spot metering, correction setting such as exposure correction) is performed by the operation unit COP. ), The brightness of the subject to be photographed is determined and set as the control brightness value BVS. In step # 174, the value of the subject brightness BVag in the silver halide shooting is set to BVS, and the TVag is determined based on the equation (1) from the AVag set by the photographer using the operation unit. BVag + SV + PV = AVag + TVag (1) (repost)

Next, the transmittance NV of the ND filter is set based on the BVS value and the SV value (# 176). For example, when the BVS is large (when the brightness of the subject is high) or when the sensitivity of the mounted film is high, the ND amount is increased and the transmittance is reduced. In step # 178, the value of the subject brightness BVCCD in video shooting is determined as BVS. Furthermore, in order to make the blur between the silver halide image and the video image the same, the set value of AVCCD is provisionally set to the same value as AVag + βV.

The gain setting of the CCD is 0d as an initial value.
B, that is, ΔSVCCD = 0 (# 180), and # 182
It is checked whether or not the set value of the provisionally determined AVCCD can be actually set. For example, open F of relay optical system
If No. = 1.4, AVCCDφ = 1, but the set value of the main lens is FNo. = 2 (AVag = 2), β = 1/4 (β
When V = -2), the left side of equation (5) is 0, but the right side cannot take a value of 1 or less. As described above, if Expression (5) cannot be satisfied, the determination result is true, and if it can be satisfied, the determination result is false, and the processing flow branches.

If satisfied, the electronic shutter speed TVCCD is set at # 184. That is, AVCCD of the equation (2)
Equation (10) is obtained by substituting AVag + βV from equation (5) and transposing. Where ΔSVCDCD =
0, NV = 0. TVCCD = BVCCD + SVCCD + ΔSVCCD + RV + NV− (AVag + βV) (10)

It is # 186 to confirm whether or not the obtained TV CCD is within the set range. For example, TV
If the set value of the TV CCD becomes 3 (1/8 second) when the set range of the CCD is 5 to 12, the judgment result becomes true because the set value is out of the set range, and the set value of the TV CCD becomes 9 (1/1 second). 50
(0 seconds), the determination result is false, and the processing flow branches.

If the judgment result is true, the set values of NV and ΔSV CCD are changed so that TV CCD falls within the set range (#
188), according to the changed value, TVcc
D is reset (# 190). When the determination result is false, the photographing is started (# 204) by depressing the release button (S20N) with the original set value, and each part (ND filter transmittance NV, CCD gain, etc.) according to the determined set value. Setting ΔSV CCD, main lens aperture AVag, relay lens aperture AVCC, silver halide shutter speed TVag, C
The electronic shutter speed TVCCD of the CD is controlled, and the shooting ends.

On the other hand, if Expression (5) cannot be satisfied in # 182, the determination result is true, and in this case, the blur amount cannot be reproduced in video. However, in order to make the blur amount as close as possible to silver halide shooting, the relay aperture is set to open in # 192. The type M does not become true in the determination of # 182, but the type ML has a combination that becomes true depending on the aperture setting value of the main lens.

Next, at step # 194, the electronic shutter speed TV is set.
Set the CCD. That is, in equation (2), AVCC =
Expression (11) is obtained by transposing the term to AVCCDφ. However, ΔSVCDCD = 0 and NV = 0. TVCCD = BVCDCD + SVCDCD + ΔSVCD + RV + NV−AVCCDφ (11)

The processing from # 196 to # 200 is performed in # 1
This is the same as the processing from 86 to # 190. In # 202, the fact that the blur amount of the display image in the after-view or preview is different from the actual silver halide image is displayed on the EVF, and the process waits for S2ON. Photographed by S2ON (# 204)
Is done.

In this control example, the release button is half-pressed (S1
ON), photometry is started. However, the process up to # 178 may be performed at the time of starting display of an image on the EVF, and the exposure of the CCD may be controlled according to the setting. Thereafter, when the release button is half-pressed (S1 ON), the process is restarted from # 174.
By doing so, the time lag from when the release button is fully depressed (S2 ON) is reduced.

Further, when the display of an image on the EVF is started, the operations up to # 190 or # 200 may be performed, and the exposure of the CCD may be controlled according to the setting. Thereafter, when the release button is half-pressed (S1 ON), the process is restarted from # 174. By doing so, the image confirmed by the EVF is always close to silver halide photography.

In this control example, the release button is depressed (S
2ON), the final exposure control including the exposure of the CCD is performed, but when the release button is half-pressed (S1 ON),
Steps 190 and # 200 may be performed, and the exposure of the CCD may be controlled according to the settings. By doing this,
By S1ON, both the exposure condition for silver halide photography and the exposure condition for video photography can be locked based on the output of the AE sensor C12, and the image confirmed by EVF becomes close to that of silver halide photography.

FIGS. 29 to 32 show an example of the control D for matching the brightness, blurring, and blurring of the image in the PH (silver film) mode. This control is characterized by simultaneously satisfying Expressions (3), (4) and (5). When the exposure mode is set to the aperture priority mode or the shutter speed priority mode when the shooting mode is the PH mode, Used. BVag = BVCCD = BVS (3) (repost) TVag = TVCCD (4) (repost) AVag + βV = AVCCD (5) (repost)

First, initial settings are made in step # 222. That is, PV, RV, β
S from V and SV CCD setting and read film sensitivity
V is set, and the set value is stored in the exposure control circuit of the main microcomputer. However, since the type L does not have a combination that satisfies the expression (5), or has only one point, the EVF display is a display with only the same image brightness.

The photographer half-presses the release button (S1 ON)
Then, the brightness of the subject is measured by the AE sensor, and the information is sent to the CPU of the main microcomputer, where the exposure setting (luminance distribution setting such as multi-segment metering and spot metering, correction setting such as exposure correction) is performed by the operation unit COP. ), The brightness of the subject to be photographed is determined and set as the control brightness value BVS. In step # 224, the value of the subject brightness BVag in the silver halide shooting is set to BVS, and the AVag or TVag is determined based on the equation (1) from the AVag or TVag or the program curve set by the photographer using the operation unit. BVag + SV + PV = AVag + TVag (1) (repost)

In step # 226, the value of the subject luminance BVCDCD in video shooting is determined as BVS. Furthermore, in order to make the blur and blur of the silver halide image and the video image the same, AVCCD
To the same value as AVag + βV and TVCCD to TVag
Temporarily set to the same value as.

In # 228, the AVCCD provisionally determined
Check whether the setting value of can be actually set. For example, if the open FNo. Of the relay optical system is 1.4, AVCCDφ =
1, but the set value of the main lens is FNo. = 2 (AVag =
2) When β = 1/4 (βV = −2), the left side of Expression (5) is 0, but the right side cannot take a value of 1 or less. As described above, if Expression (5) cannot be satisfied, the determination result is true, and if Expression (5) can be satisfied, the determination result is false.
The processing flow branches.

If the condition is satisfied, the initial value of the gain setting of the CCD is first set to 0 (ΔSVCDCD = 0) in # 230, and the equation (1), the equation (2) and the equation (3) are used to calculate the equation BVag = BVCDCD. After obtaining (12), the ND filter transmittance NV is determined. However, ΔSVCDCD = 0. NV = AVCCD + TVCCD-SVCDCD-SVCDCD- [Delta] SVCCD-RV = AVag + [beta] V + TVag-BVCDCD-SVCDCD- [Delta] SVCDCD-RV = SV-SVCDCD- [Delta] SVCDCD- (RV-PV) + [beta] V

In step # 232, it is determined whether the determined NV value is outside the set range. When the determination result is false, the photographing is started (# 270) by depressing the release button (S2 ON) with the set value, and each part (ND filter transmittance NV, CCD gain setting Δ) is determined according to the determined set value.
The SVCCD, the aperture AVag of the main lens, the aperture AVCC of the relay lens, the shutter speed TVag of the silver salt, and the electronic shutter speed TVCCD of the CCD are controlled, and the shooting ends.

If the judgment result is true, the gain adjustment of the CCD is changed from the initial value 0 within a range where the ND filter transmittance NV can be set. For example, if the actual value of NV is 0, 1,
When the set value becomes 2.5 when only four points of 2, 3 can be obtained, NV = 2 and ΔSV CCD = −0.5,
A setting that satisfies Expression (12) can be made. Where ΔSVCCD
= Α is provisionally set (# 234). At # 236, it is checked whether the provisional set value is within the correction range of ΔSV CCD (for example, within ± 3).

If so, equation (12) and ΔSVCDCD =
Equation (13) is obtained from the relationship of α, the ND filter transmittance NV is set (# 238), and the S2 ON of the release button is waited. An image is taken (# 270) by pressing the release button S2 ON. NV = SV-SV CCD-α- (RV-PV) + βV = nm (13)

If not, an EVF display in which blur and blur are the same cannot be obtained. First, ΔSVCC is set to the closest value within the correction range (for example, within ± 3) (# 2
40). For example, if the provisional set value of ΔSVCC is 4, Δ
Set SVCCD = 3. Change the changed set value to αm (ΔSV
CCD = αm).

At step # 242, processing corresponding to each exposure mode is performed. In the aperture priority mode, the AVCC
VCDCD ≠ TVag, equation (14) is obtained from equation (2), and T
Reset VCCD. T for shutter speed priority mode
AVCCD ≠ AVag + βV without changing the VCCD,
The expression (15) is obtained from the expression (2), and the AVCC is reset.
In the program mode or the manual mode, the setting is changed according to the aperture priority mode or the shutter speed priority mode. TVCCD = BVS + SVCDCD + αm + RV + nm− (AVag + βV) (14) AVCCD = BVS + SVCDCD + αm + RV + nm−TVag (15)

After each setting change, at # 244, the EVF displays that the blur amount or blur amount of the display image in the after-view or preview is different from the actual silver halide image, and waits for S2ON. Photographed by S2ON (#
270).

In the determination of # 228, the tentatively determined A
If the set value of the VCCD cannot satisfy Expression (5), the blur amount cannot be reproduced in the video (EVF).
However, in order to make the blur amount as close as possible to silver halide photography, the relay aperture is set to open in # 248. Type M
Although the determination result of # 228 is not true,
At L, a combination occurs in which the determination result is true depending on the aperture setting value of the main lens.

In the subsequent processing, the setting value of the AVCC
Just changing to CDφ is almost the same as when Expression (5) is satisfied. Steps # 250- # 264 are # 2
30 to # 244. However, # 26
6 and # 268 are added to indicate on the EVF that the blur amount of the display image in the after-view or the preview is different from the actual silver halide image.

In this control example, the release button is half-pressed (S1
ON), photometry is started. However, when displaying an image on the EVF is started, steps up to # 226 may be performed, and the exposure of the CCD may be controlled according to the setting. Thereafter, when the release button is half-pressed (S1 ON), the process is restarted from # 224. By doing so, the time lag from when the release button is fully depressed (S2 ON) is reduced.

Further, at the time when the display of the image on the EVF is started, steps # 238 or # 242 or # 258 or # 262 may be performed, and the exposure of the CCD may be controlled according to the setting. Then press the release button halfway (S
1ON) to start again from # 224. By doing so, the image confirmed by the EVF is always close to silver halide photography.

In this control example, the release button is depressed (S
2ON), the final exposure control including the exposure of the CCD is performed, but when the release button is half-pressed (S1 ON),
238 or # 242 or # 258 or # 26
2, the exposure of the CCD may be controlled in accordance with the settings. By doing so, by S1ON, it is possible to lock both the exposure condition for silver halide photography and the exposure condition for video photography based on the output of the AE sensor C12,
The image confirmed by the EVF is close to silver halide photography.

FIG. 33 shows a first example of control A for matching the brightness of an image in the PM (simultaneous photographing) mode. This control is characterized by satisfying Expressions (3) and (16), and is used when the type L is used and the shooting mode is the PM mode. BVag = BVCDCD = BVS (3) (reprinted) TVCCD = t (predetermined value) (16)

First, initialization is performed in step # 302. That is, PV, RV, β
S from V and SV CCD setting and read film sensitivity
V is set, and the set value is stored in the exposure control circuit of the main microcomputer.

When the PM mode is set, the brightness of the subject is measured by the AE sensor, the information is sent to the CPU of the main microcomputer, the brightness of the subject is determined, and the control brightness value BVS is set. And At step # 304, the video control brightness value BVCCD is made equivalent to BVS, and the video shutter speed is determined based on the exposure mode set by the operation unit COP. Generally, the video shutter speed is set to 1/60 second and TVCCD = 6. Here, it is assumed that t is set.

The ND filter transmittance NV is determined according to the BVS value and the sensitivity of the mounted film (# 30).
6). Since the TV CCD often takes a fixed value, there is a limit to changing the light amount only by the aperture in video shooting, and the ND amount is often determined according to the BVS value. Here, let the transmittance NV be n0. The ND filter control unit C15 is operated so that the ND filter becomes n0.
Control of the relay throttle is started when n0 is reached (# 3
08), the control value of the AVCC according to the equation (17) is given, and the control value follows the ever-changing luminance. Recording ON / OF in this state
Video recording is started by operating the F button. AVCCD = BVS + SVCCD + RV + n0-t (17)

When the release button is half-pressed (S1 ON) during video recording, the control brightness BVag for silver halide photography is determined according to the BVS at that time, and the program curve, aperture value, and shutter speed are controlled by the operation unit COP. TVag and AVag are determined from the set value according to the APEX equation (# 310).

When the release button is fully depressed, silver halide photography is performed in accordance with the determined value (# 312). A flag is set on the field image at the same timing as when the silver halide photography was performed, and used as an index for after-view.

FIG. 34 shows a second example of the control A for matching the brightness of the image in the PM (simultaneous shooting) mode. This control is characterized by satisfying Expressions (16) and (18), and is used when the shooting mode is the PM mode in Type M or Type ML. TVCCD = t (predetermined value) (16) (again) AVag ≦ AVCCD−βV (18)

First, initial settings are made in step # 332. That is, PV, RV, β
S from V and SV CCD setting and read film sensitivity
V is set, and the set value is stored in the exposure control circuit of the main microcomputer.

When the PM mode is set, the brightness of the subject is measured by the AE sensor, the information is sent to the CPU of the main microcomputer, and the brightness of the subject is determined by the control brightness value BVS. And In step # 334, the control brightness value BVCDCD of the video is made equivalent to BVS, and the shutter speed of the video is determined based on the exposure mode set by the operation unit COP. Generally, the shutter speed of a video is set to 1/60 second and TV CCD = 6. Here, it is assumed that t is set. If the exposure mode is a sports mode for shooting a moving object, the shutter speed is 1/2.
It is set to 50 seconds or the like.

The ND filter transmittance NV is determined according to the BVS value and the sensitivity of the mounted film (# 33).
6). Since the TV CCD often takes a fixed value, there is a limit to changing the light amount only by the aperture in video shooting, and the ND amount is often determined according to the BVS value. Here, let the transmittance NV be n0. The ND filter control unit C15 is operated so that the ND filter becomes n0.
When the transmittance NV becomes n0, the control of the relay diaphragm is started (# 338), and the control value of the AVCC according to the equation (17) is given to follow the ever-changing luminance. By operating the recording ON / OFF button in this state, video recording is started. AVCCD = BVS + SVCCD + RV + n0-t (17) (repost)

When the release button is half-pressed (S1 ON) during video recording, the control brightness BVag for silver halide photography is determined according to the BVS at that time, and the program curve, the aperture value, and the shutter speed operation unit COP are used. TVag and AVag are provisionally determined from the set value according to the APEX equation (# 340). Next, it is confirmed whether or not the video being recorded is affected when the aperture of the main lens is reduced by the provisionally determined AVag (# 342). That is, when Expression (19) is satisfied, the change in the light flux when the aperture of the main lens is stopped down affects the light flux to the CCD, and the video is momentarily darkened. AVag> AVCCD-βV (19)

If the condition is not satisfied, if the release button is fully depressed, silver halide photography is performed according to the determined value (# 34).
8). A flag is set on the field image at the same timing as when the silver halide photography was performed, and used as an index for after-view.

If the condition is satisfied, the setting is changed so that the video image is not affected. First, the aperture of the main lens is changed so that Expression (20) is satisfied (# 344). This eliminates the effect on the video when shooting silver halide. Further, the shutter speed is changed in accordance with the equation (21) so as not to cause an exposure change due to a change in aperture setting (# 34).
6). AVag = AVCCD−βV (20) TVag = BVag + SV + PV− (AVCCD−βV) (21)

When the release button is fully depressed, silver halide photography is performed in accordance with the determined value (# 348). A display warning that the aperture value or the shutter speed has been changed may be displayed. A flag is set on the field image at the same timing as when the silver halide photography was performed, and used as an index for after-view.

FIGS. 35 and 3 show examples of the control B for matching the brightness of the image with the degree of blur in the PM (simultaneous shooting) mode.
6 is shown. This control is characterized by simultaneously satisfying Expressions (3) and (4) and determining TVag in advance according to the exposure mode of the silver halide, giving priority to after-view in silver halide photography. Used when the shooting mode is the PM mode in the type M, ML or L. BVag = BVCCD = BVS (3) (repost) TVag = TVCCD (4) (repost)

First, initial settings are made in step # 362. That is, PV, RV, β
S from V and SV CCD setting and read film sensitivity
V is set, and the set value is stored in the exposure control circuit of the main microcomputer.

When the PM mode is set, the brightness of the subject is measured by the AE sensor, the information is sent to the CPU of the main microcomputer, and how the subject is determined by the exposure mode and the exposure setting set by the operation unit COP. It is determined whether the image is to be photographed at an appropriate brightness, and is set as the control luminance value BVS.
According to the BVS value and the set exposure mode, T
Determine Vag and AVag. However, the TVag should be 5 to 8 (1/30 to 1/30) so that the video recording does not become unnatural and the camera shake does not occur in silver halide shooting.
(1/250 second) is provisionally set with priority (# 364).
TVag = t.

At step # 366, the video control brightness value BVCCD is made equivalent to BVS, and the electronic shutter speed TVCC of the CCD is set.
D is made equivalent to the silver salt shutter speed TVag.

The ND filter transmittance NV is determined according to the BVS value or TVag value (# 368). A in equation (17)
Temporarily determine so that VCCD falls within the set range. Here, it is assumed that n0. The ND filter control unit C15 is operated so that the ND filter becomes n0. When the transmittance NV becomes n0, the control of the relay aperture is started (# 36).
8) The control value of the AVCC according to the equation (17) is given to follow the ever-changing luminance (# 370). By pressing the recording ON / OFF button in this state, video recording is started. AVCCD = BVS + SVCCD + RV + n0-t (17) (repost)

When the release button is half-pressed (S1 ON) during video recording (# 372), the control brightness BVag for silver halide photography is determined according to the BVS at that time,
According to the BVS value and the set exposure mode, T
Temporarily determine Vag and AVag. However, TVag at this time
Has the same value as TV CCD. Next, it is confirmed whether or not there is a high possibility of camera shake at the time of silver halide shooting due to the provisionally determined TVag (hereinafter referred to as “out of camera shake limit”) (# 374). In general, in the 135 system, when the focal length of the lens is fmm, it is said that camera shake easily occurs when the shutter speed is longer than 1 / f second. In this control example, referring to this, the focal length of the lens at the time of photographing is set to fmm, and when the shutter speed is longer than 1 / f second, it is outside the camera shake limit.

If it is within the camera shake limit, the flow advances to step # 376, and it is checked whether or not the video image is affected at the time of shooting the silver halide film, as in step # 342 of FIG. If there is no influence, if the release button is fully depressed, silver halide photography is performed according to the determined value (# 406). A flag is set on the field image at the same timing as when the silver halide photography was performed, and used as an index for after-view.

[0196] There are two ways to deal with the effects. One is to keep the silver halide setting as much as possible. This is a method that does not maintain the setting of the silver halide without affecting the video image. The latter is # 378-382
And the above-mentioned # 344 and # 346
Perform the same measures as above.

In the former case, first, the relay aperture is narrowed according to equation (5) so as not to have an effect (# 38).
4). With the change of the relay aperture, the gain is changed according to the equation (22) derived from the equation (12) (# 386). AVag + βV = AVCCD (5) (reprinted) ΔSVCDCD = SV−SVCDCD− (RV−PV) + βV−n0 (22)

When the release button is fully depressed, silver halide photography is performed in accordance with the determined value (# 406). At this time, the video setting is changed only for one field or one frame at the time of silver halide photography. A flag is set on the field image at the same timing as when the silver halide photography was performed, and used as an index for after-view.

If the TVag is out of the camera shake limit range in the judgment of # 374, it is changed to within the camera shake limit (# 390). In this control example, when the focal length of the lens is fmm, the shutter speed is set to 1 / f second. This is set as t0. According to the changed shutter speed value, the aperture value of the main lens is set in accordance with Expression (23) derived from Expression (1) (# 3)
92). This is the direction in which the aperture is opened with respect to the original set value. AVag = BVag + SV + PV-t0 (23)

In # 394, similarly to # 342 in FIG. 34,
Check if the video image is not affected during silver halide shooting. If there is no influence, it warns that the shake amounts are not the same (# 396), and if the release button is fully depressed, silver halide photography is performed according to the determined value (# 406). Alternatively, the electronic shutter speed is set to the camera shake limit only for one field or one frame during silver halide photography (# 398), and the change in the exposure amount due to the shutter speed change is changed by the gain in the image processing unit of the CCD (# 400). Shooting (# 40
6) may be performed. A flag is set on the field image at the same timing as when the silver halide photography was performed, and used as an index for after-view.

If the influence appears, 1
In a field or one frame or several fields before or after it, the aperture of the relay is stopped down to the point where no influence is exerted (# 402), and a change in the exposure amount accompanying the change of the relay aperture is changed by changing the gain in the image processing unit of the CCD (# 402) 404) to perform shooting (# 406).

FIG. 37 shows an example of the control D for matching the brightness, blurring, and blurring of the image in the PM (simultaneous shooting) mode. This control is performed by Equations (3), (4) and (5).
At the same time, TVag and AVag are determined in advance according to the silver halide exposure mode, and the sensitivity difference between the CCD and the silver halide film is corrected by an ND filter.
Give priority to after-view in silver halide photography. Type M
Alternatively, the type ML is used when the shooting mode is the PM mode. BVag = BVCCD = BVS (3) (repost) TVag = TVCCD (4) (repost) AVag + βV = AVCCD (5) (repost)

First, initialization is performed in step # 422. That is, PV, RV, β
S from V and SV CCD setting and read film sensitivity
V is set, and the set value is stored in the exposure control circuit of the main microcomputer.

When the PM mode is set, the ND filter transmittance NV is determined from the film sensitivity SV (# 4).
24). The ND filter transmittance NV is given by Expression (12). However, ΔSVCDCD = 0. NV = SV−SVCD−ΔSVCD− (RV−PV) + βV (12) (reprinted)

The brightness of the subject is measured by the AE sensor, the information is sent to the CPU of the main microcomputer, and the brightness of the subject is determined by the exposure mode and the exposure setting set by the operation unit COP. Determined and set as control brightness value BVS. Based on the BVS value and the set exposure mode, TVag and AVag are determined from Expression (1). However, in order to prevent the video recording from becoming too unnatural and to prevent camera shake during silver halide shooting, the TV
ag is temporarily set to 5 to 8 (1/30 to 1/250 second) with priority (# 426).

In step # 428, the control brightness value BVCCD of the video is made equivalent to BVS, and the electronic shutter speed TVCC of the CCD is set.
D is made equivalent to the silver salt shutter speed TVag. When determined in this way, the relay aperture value AVCCD is given by equation (5)
(# 430).

Next, it is confirmed whether or not the combination satisfies Expression (5). For example, β = 1/4 (βV =
-4), AVCCDφ = 1 (FNo. = 1.4), and main lens aperture AVag = 3 (FNo. = 2.8) at the time of shooting, Expression (5) does not hold. For equation (5) to hold, A
Vag ≧ 5 or AVCCDφ ≦ −1. In # 432, a determination based on Expression (19) is performed. AVag> AVCCD-βV (19) (repost)

When the judgment result is true, the amount of blur is made as uniform as possible by opening the relay aperture (# 434). This changes the exposure state, so the electronic shutter speed is also changed (# 436). When the determination result is false, that is, when Expression (5) is satisfied, the relay aperture is set to the set value (# 438). Recording ON / OF in this state
Video recording is started by operating the F button.

When the release button is pressed halfway (S1 ON) during video recording, various exposure setting values are held, and when the release button is pressed all the way down, silver halide photography is performed according to the determined value (# 440). A flag is set on the field image at the same timing as when the silver halide photography was performed, and used as an index for after-view.

Next, control of the cameras having the third and fourth configurations will be described. As will be described later in detail at the end of the "Embodiment of the Invention" section, in order to match the degree of blurring with the camera having this configuration, the equation is determined by the ratio of the format of the silver halide film and the CCD (the ratio of the diagonal length). What is necessary is just to correct based on (24). Fag / FCCD = m (24) Here, m is the value of the ratio of the diagonal length of the silver halide film to the diagonal length of the CCD, and Fag and FCCD represent the FNo. Of the lenses LF and LE, respectively, when photographing. .

The expression (24) expressed by the numerical value of FNo. Can be easily handled by converting it into an APEX expression such as the expression (5). Specifically, the logarithm is taken as equation (25). AVag + t = AVCCD (25) where t is a constant derived from the diagonal ratio m, and is expressed by the following equation (4)
In the example of 3), t = −3.

Further, since the pellicle mirror is not involved,
Equations (1) and (2) for cameras with first and second configurations
Instead, the equations (26) and (27) excluding the transmittance and the reflectance of the pellicle mirror are used. Equations (3) and (4) hold for the cameras of the third and fourth configurations. BVag + SV = AVag + TVag (26) BVCCD + SVCDCD + ΔSVCCD + NV = AVCCD + TVCCD (27) BVag = BVCCD = BVS (3) (represented) TVag = TVCCD (4) (reposted)

By controlling these equations in the same manner as described above, even with a two-lens type lens shutter camera, the degree of blur between the image recorded on the silver halide film and the CCD image can be made uniform.

The flash photography will be described. In flash photography, exposure control different from that under normal light is required. FIG. 38 shows the principle of exposure control in flash photography. In general, in flash photography in silver halide photography, automatic control of a light emission amount for giving an appropriate luminance to a subject includes an automatic light control for changing the light emission amount itself of the flash shown in FIG. There is a flashmatic which is controlled by the distance between the aperture and the subject without changing the light emission amount of the flash shown in ()). In FIG. 38,
a represents a flash light emitting part, b represents a light receiving part, c represents a camera, d represents a diaphragm (FNo.) of a photographing lens, and l represents a distance (m) to a subject.

First, the flashmatic shown in FIG. 38B will be described. The flash has a guide number (GNo.) As a unique value that defines the amount of light emission. Equation (2) for a film having ISO100 sensitivity
By satisfying 8), an appropriate luminance is given to the subject. If the camera detects the distance to the subject and the G No. of the flash has been determined, the optimal amount of light will be emitted to the subject by setting the aperture according to the above formula. Generally, it is often used for a compact camera having a lens shutter. GNo. = D × 1 (28)

Next, the automatic light control shown in FIG. 38A will be described. Also in this case, the G No. of the flash is determined, but this defines the maximum light emission amount of the flash, and the light is controlled by stopping the light emission halfway. The sensitivity of the film and the aperture value d are determined, and the values are transmitted to the flash. When the flash is fired, the reflected light from the subject is detected by the light receiving unit b.

The TTL direct light control shown in FIG. 38C has further advanced this. Since the light receiving unit b detects the reflected light from the subject by the reflected light from the film, the light receiving unit b shown in FIG.
If the aperture information is not required and the film sensitivity information is present as in FIG. 8A, the light amount is determined to be the optimal light amount, and the flash emission is stopped.

According to the present invention, the C
A video image of a CD is used as a release view or an after view of a silver halide film image. Also in this case, as in the case of the normal photographing without using the flash described above, the image of the CCD is matched with the image of the silver halide film with respect to the composition and the brightness of the image, and the degree of blurring of the image is also appropriately adjusted. .

Control for making the brightness of the CCD image coincide with the brightness of the image of the silver halide film in flash photography will be described with reference to Table 3 and the flowcharts in FIGS. Table 3 shows the correspondence between the camera type, the availability of the combination of the silver halide light control method and the video light control method, and a diagram showing a control example.

[0220]

[Table 3]

Regarding the single-lens reflex camera having the first and second configurations and the twin-lens camera having the third and fourth configurations, silver halide photography controls exposure by TTL direct light control and flashmatic. . In video shooting, exposure is controlled by the following two dimming methods, α and β.

The light control method α is to adjust the video side to the light control amount of the silver halide, and to adjust the video sensitivity relatively to the sensitivity of the silver halide film. Specifically, the flash light for silver halide light control is used for light control of the CCD over the entire emission time, and the aperture, the ND filter, and the gain of the CCD are appropriately selected, so that the CCD light is controlled. Dimming is performed with the same relative sensitivity as the silver halide film. Therefore, it is necessary to reset the aperture and ND filter on the video side immediately before the flash shooting. In the case of the PM mode in which the silver halide shooting is performed while recording the video shooting, discontinuous portions may be present in the video image. It is highly likely that it will occur. This dimming method α
Is used to obtain a video image for release view or after view in PH (silver film) mode.

The light control method β performs light control exclusively for video, and uses flash light for silver salt light control for light control of the CCD for a part of the time from the start to the end of light emission. . That is, a video dimming device is provided, and dimming is performed by an electronic shutter instead of stopping flash light emission. Therefore, it is possible to perform flash photography without resetting the aperture and the ND filter on the video side immediately before flash photography, which is an optimal method for the PM mode in which silver halide photography is performed while recording video photography. However, it is necessary to provide a photometric element for dimming the CCD. The dimming method β is used for obtaining a video image for a release view or an after view in both a PH (silver salt shooting) mode and a PM (simultaneous shooting) mode.

In flash photography, the time during which the flash light reflected by the subject is received becomes the substantial shutter speed. The flash emission time is Tf, and the actual shutter speed of the silver halide and CCD is TVa.
When expressed by g ′ and TVCCD ′ (both are APEX values), the equation (29) holds for the dimming method α, and the degree of blurring of both images is the same. In the light control method β, strictly speaking, the equation (29) does not hold, and the actual shutter speed differs between the silver halide and the CCD. However, since the flash emission time is within the flash emission time (normally about 1/4000 second or less), it becomes very short. Are substantially the same. Note that, naturally, the composition is the same by any of the dimming methods. Also, the appearance of the shadow by the flash light becomes almost the same. TVag '= TVCCD' = Tf (29)

In the normal photographing without using the flash, the control A for matching the brightness of the silver halide image and the video image, the control B for matching the brightness of the image and the degree of blur,
There are four types of control, control C for matching the brightness and the degree of blur, and control D for matching all of the brightness, the degree of blur and the degree of blur, but as described above, the degree of blur is substantially the same for both the dimming methods α and β. In this case, there are two types of control, control B for matching the brightness and blur of the image, and control D for matching all of the brightness, blur and blur.
The numbers in Table 3 represent the numbers in the figures showing the control examples. In Table 3, those marked with a triangle indicate the film size and CCD.
It is difficult to realize the control due to a large difference in the size of the control signal. This will be described later.

FIG. 3 shows an example of control B for matching the brightness and blur of the image of the silver halide film and the image of the CCD in the PH mode in flash photography of a single-lens reflex camera.
9 The exposure control of the CCD is based on the light control method α. Exposure control of the silver halide film may be performed by TTL direct light control, or may be performed by flashmatic.

When the flash photography mode is set by the operation unit COP (step # 462), initial setting is first performed (# 464). That is, PV, which is a camera unique value,
The setting of RV, βV, SVCCD and the setting of SV based on the read film sensitivity are performed, and the set values are stored in the exposure control circuit of the main microcomputer. At this time, in particular, the difference SV-SVCDCD between the film sensitivity and the CCD sensitivity is set to D (# 46).
8).

In this state, when the photographer half-presses the release button (S1 ON), the aperture value AVag of the main lens is determined according to the exposure setting by the operation unit COP, and then the sensitivity difference D is corrected. In this case, equations (1), (2),
Since (29) holds, TVag, TVCCD
Is eliminated to obtain the equation (30). Further, if the left side is represented by D, equation (31) is obtained. SV−SVCDCD = (AVag−AVCCD) − (PV−RV) + ΔSVCDCD + NV (30) D = (AVag−AVCCD) − (PV−RV) + ΔSVCDCD + NV (31)

Since the PV-RV is the difference between the transmittance and the reflectance of the pellicle mirror and is a constant determined by the initial setting, the sensitivity difference D can be corrected at three points: AVag-AVCCD, ΔSVCDCD and NV. Here, the film sensitivity is ISO
100 (SV = 5), the sensitivity of the CCD is equivalent to ISO 200 (SV CCD = 6), and the transmittance of the periclue is 1/2, that is, the case where PV-RV = 0 is described as an example.

When Sensitivity Difference D is Corrected with Aperture Value (# 47)
0a) is the main lens aperture FNo. = 5.6 (AVag = 5) and the relay aperture FN so that AVag-AVCCD = -1.
It can be corrected by setting o. = 8 (AVCCD = 6). At this time, the CCD gain ΔSV CCD and the ND filter transmittance NV are set to 0. Correction with CCD gain (# 4
70b) Assuming that the main lens aperture and the relay aperture are the same (AVag-AVCCD = 0), correction can be made by setting ΔSVCDCD = −1 (the amplification factor of the video circuit is set to −6 dB). At this time, the ND filter transmittance NV is set to 0. When correcting with the ND amount, that is, the transmittance NV of the ND filter (#
470c), if the main lens aperture and the relay aperture are the same (AVag-AVCCD = 0), the correction can be made by setting NV = -1 (inserting an ND filter equivalent to ND2). At this time, the CCD gain ΔSVCDCD is set to 0. Further, it is also possible to perform correction using two or all of the three factors (# 47).
0d).

When the above setting is completed, the release button is completely depressed (S2 ON) and the shutter C0 is released.
7 opens and the flash fires. In the case of TTL direct dimming, when the AE sensor C12 determines that the appropriate light amount has been reached, the main microcomputer C01 outputs a signal for stopping flash emission, and the flash emission stops. In the case of a flashmatic, the distance to the subject is detected from the AF information at the time of S1 ON, the aperture value of the main lens is reset from the guide number of the flash, and when the release button is fully depressed (S2 ON), the shutter opens and the flash fires. After a certain amount of light emission, the light emission of the flash stops. Thereafter, in both cases, the shutter closes (# 472).

The opening / closing of the shutter C07, the emission of flash light, and the timing of photoelectric conversion of the CCD follow the first synchronization control described with reference to FIG. 17 or the second synchronization control described with reference to FIG. That is, the shutter opening operation is started by the trigger signal, and at the same time, a field shift pulse is applied to the CCD to start a new photoelectric conversion, and the flash is emitted when the shutter is fully opened. During the flash emission period, no field shift pulse is input to the CCD.

In the above control example, the S2ON is accepted after the various settings are completed. However, the settings may be changed by the S2ON, and the flash may be emitted after the completion.

FIG. 40 shows an example of the control B for matching the brightness of the image of the silver halide film with the brightness of the image of the CCD in the PH mode in flash photography of a twin-lens camera. The exposure control of the CCD is based on the light control method α. Exposure control of the silver halide film may be performed by TTL direct light control, or may be performed by flashmatic.

The cameras of the third and fourth configurations shown in FIGS. 8 and 9 differ from the cameras of the first and second configurations in terms of the exposure of the silver halide film instead of the formulas (1) and (2). Satisfies Equation (26), and Equation (27) holds for CCD exposure. BVag + SV = AVag + TVag (26) (reprinted) BVCCD + SVCDCD + ΔSVCCD + NV = AVCCD + TVCCD (27) (reprinted)

When the flash photography mode is set by the operation unit COP (step # 492), first, initial settings are made. That is, a CCD sensitivity SVCCD, which is a characteristic value related to the camera, and a sensitivity SV read from a film mounted are set, and stored in the exposure control circuit of the main microcomputer C01 (# 494). At this time, the difference SV-SVCDCD between the film sensitivity and the CCD sensitivity is set to D (# 4).
96).

In this state, when the photographer half-presses the release button (S1 ON), the aperture value AVag of the main lens is determined according to the exposure setting by the operation unit COP, and then the sensitivity difference D is corrected. In this case, since equation (29) holds, equation (32) is obtained by eliminating TVag and TVCCD from equations (26) and (27). Further, if the left side is represented by D, equation (33) is obtained. SV−SVCDCD = (AVag−AVCCD) + ΔSVCCD + NV (32) D = (AVag−AVCCD) + ΔSVCDCD + NV (33)

The sensitivity difference D is corrected by AVag-AVCCD, ΔS
It can be performed by three points of VCCD and NV. Here, a case where the film sensitivity is ISO100 (SV = 5) and the CCD sensitivity is equivalent to ISO200 (SVCDCD = 6) will be described as an example.

When Correcting Sensitivity Difference D with Aperture Value (# 49)
8a), the aperture C50 (FIGS. 8 and 9) also serving as a shutter of the lens LF is set to FNo. = 5.6 (AVag = 5), and the aperture of the lens LE is set to FN so that AVag-AVCCD = -1.
It can be corrected by setting o. = 8 (AVCCD = 6). At this time, the CCD gain ΔSV CCD and the transmittance NV of the ND filter are set to 0. When correcting with the CCD gain (# 498b), assuming that the aperture of the lens LF and the aperture of the lens LE are the same (AVag-AVCCD = 0), ΔSVCDCD
= -1 (the amplification factor of the video circuit is -6 dB). At this time, the ND filter transmittance NV is 0.
And When correcting with the ND amount, that is, the transmittance NV of the ND filter (# 498c), assuming that the aperture of the lens LF and the aperture of the lens LE are the same (AVag-AVCCD =
0), NV = -1 (an ND filter equivalent to ND2 is inserted). At this time, the CCD gain ΔSVCDCD is set to 0. Further, it is also possible to perform correction using two or all of the three factors (# 498d).

When the release button is fully depressed (S2 ON) when the above settings are completed, the lens shutter C50 opens, and when the shutter opens to the set aperture value, the flash fires. In the case of TTL direct light control, the main microcomputer C01 outputs a signal for stopping flash emission when it is determined by the AE sensor (not shown) that an appropriate amount of light has been reached, and the flash emission stops. In the case of a flashmatic, the distance to the subject is detected from the AF information at the time of S1 ON, the aperture value of the lens LF is reset from the guide number of the flash, and when the release button is fully pressed (S2 ON), the lens shutter C50 is opened and the set aperture value is set. When the shutter opens to the value, the flash fires. After a certain amount of light emission, the light emission of the flash stops. Thereafter, in both cases, the shutter closes (# 500).

The opening / closing of the lens shutter C50, the emission of the flash light, and the timing of the photoelectric conversion of the CCD follow the first synchronous control shown in FIG. 17 or the second synchronous control shown in FIG. That is, a shutter opening operation is started by a trigger signal, and at the same time, a field shift pulse is applied to the CCD to start a new photoelectric conversion, and a flash is emitted when the shutter is opened to a predetermined aperture. During the flash emission period, no field shift pulse is input to the CCD.

In the above control example, S2ON is accepted after various settings are completed. However, various settings may be changed by S2ON, and the flash emission may be performed after the completion.

FIG. 41 shows an example of control D for matching the brightness, blurring, and blurring of the image of the silver halide film and the image of the CCD in the PH mode in flash photography of a single-lens reflex camera. Exposure control of CCD is dimming method α
by. Exposure control of the silver halide film may be performed by TTL direct light control, or may be performed by flashmatic.

When the flash photography mode is set by the operation unit COP (step # 522), first, initial settings are made (# 524). That is, PV, which is a camera unique value,
The setting of RV, βV, SVCCD and the setting of SV based on the read film sensitivity are performed, and the set values are stored in the exposure control circuit of the main microcomputer. At this time, the difference SV-SVCCD between the film sensitivity and the CCD sensitivity is set to D (# 52).
6).

In this state, when the photographer half-presses the release button (S1 ON), the aperture value AVag of the main lens is determined according to the exposure setting by the operation unit COP. Then
The setting for matching the degree of blur is performed, and the sensitivity difference D is corrected based on Expression (31) derived from Expressions (1), (2), and (29). D = (AVag−AVCCD) − (PV−RV) + ΔSVCCD + NV (31) (reprinted)

Since the PV-RV is a constant determined by the initial setting, the sensitivity difference D can be corrected by three points, AVag-AVCCD, ΔSVCDCD and NV. A relay aperture value is set to make the blur amount uniform (# 528). Further, it is confirmed whether the set value can be actually realized (# 530).

If it is feasible, it is determined that the equation (31) is not satisfied by adjusting the blur amount by ΔSVCC
Correction is made at two points, D and NV (# 532). For example, the film sensitivity is ISO100 (SV = 5), the CCD sensitivity is equivalent to ISO200 (SVCDCD = 6), β = 1/4 (βV
= -4), the main lens aperture is FNo. = 5.6 (AVa
g = 5), the relay aperture value is AVCCD = 1 (FNo. =
1.4). Also, the transmittance of the pellicle mirror is 1 /
Assuming that 2, PV−RV = 0, so that ΔSVCDCD + NV = −5 from equation (31). Here, an ND filter equivalent to ND8 is inserted (NV = -3), and a CCD is provided.
The equation (31) is established by setting the gain to −12 dB (ΔSVCDCD = −2).

On the other hand, if it cannot be realized, the aperture of the relay lens is opened to make the amount of blur as uniform as possible (# 534), and the condition that expression (31) is no longer satisfied is expressed by ΔS
Correction is made at two points, VCCD and NV (# 536). For example,
Film sensitivity is ISO100 (SV = 5), CCD sensitivity is equivalent to ISO200 (SVCDCD = 6), β = 1/4
When (βV = -4), the main lens aperture is FNo. = 2.8.
(AVag = 3), and the opening of the relay aperture is AVCCDφ =
1 (FNo. = 1.4), and if the transmittance of the pellicle mirror is １ ／, PV-RV = 0, so that the equation (3)
From 1), ΔSVCCD + NV = −3. Where ND
Insert a filter equivalent to ND4 (NV = -2)
Then, by setting the CCD gain to −6 dB (ΔSVCDCD = −1), Expression (31) is established.

When the release button is completely depressed (S2 ON) when the above settings are completed, the shutter opens and the flash fires. In the case of TTL direct dimming, when the AE sensor C12 determines that the appropriate light amount has been reached, the main microcomputer C01 outputs a signal for stopping flash emission, and the flash emission stops. In the case of a flashmatic, the distance to the subject is detected from the AF information at the time of S1 ON, the aperture value of the main lens is reset from the guide number of the flash, and when the release button is fully depressed (S2 ON), the shutter opens and the flash fires. After a certain amount of light emission, the light emission of the flash stops. Then, in both cases, the shutter closes (# 5
38).

The opening / closing of the shutter C07, the emission of the flash light, and the timing of the photoelectric conversion of the CCD are performed according to the first synchronous control shown in FIG. 17 or the second synchronous control shown in FIG.
According to the synchronous control. That is, the shutter opening operation is started by the trigger signal, and at the same time, a field shift pulse is applied to the CCD to start a new photoelectric conversion.
The flash fires when the shutter is fully opened. During the flash emission period, no field shift pulse is input to the CCD.

In the above control example, S2ON is accepted after various settings are completed. However, various settings may be changed by S2ON, and a flash may be emitted after the completion.

The flash photographing in the PM (simultaneous photographing) mode by the single-lens reflex camera will be described. As described above, the exposure control of the CCD is based on the light control method β. A dimming (photometric) element for a CCD is required as a camera configuration. As in the camera of the second configuration shown in FIG.
A light control device (AE sensor C12a) for light control and a light control device for silver halide film (AE sensor C12b) may be separately provided, as in the camera having the first configuration shown in FIG.
One light control element (AE sensor C12) can be used for both a silver halide film and a CCD.

AE sensor C12 of camera of second configuration
The relationship between the amount of received light at a and C12b and the output timing of the dimming signal is as shown in FIGS. 23 (a) and (b), respectively. The AE sensor C12a receives the split light of the light guided to the CCD, and when the amount of received light reaches a predetermined amount A1, t1
Output the dimming signal. The photoelectric conversion of the CCD is stopped by the light control signal. The AE sensor C12b receives the reflected light from the silver halide film, and outputs a dimming signal at t2 when the amount of received light reaches a predetermined amount A2.

AE sensor C12 of camera of first configuration
The relationship between the amount of received light and the output timing of the dimming signal is shown in FIG.
As shown in FIG. The AE sensor C12 outputs a first dimming signal at t1 when the amount of received light reaches the first predetermined amount A1 ', and at time t2 when the amount of received light reaches the second predetermined amount A2'.
To output a second dimming signal. The photoelectric conversion of the CCD is stopped by the first output signal, and the flash emission is stopped by the second output signal.

In the camera having the second configuration shown in FIG. 7, since the AE sensor C12a is disposed after all the exposure adjusting means of the CCD, the factor which determines the amount of light control is only the sensitivity SVCC of the CCD. In the camera having the first configuration shown in FIG. 1, since an ND filter and an aperture are arranged between the AE sensor C12 and the CCD, factors that determine the amount of light control include not only the sensitivity S CCD of the CCD but also the ND filter and the aperture value. Also joins.

In photographing with a single-lens reflex camera,
FIGS. 42 to 44 show examples of control B for matching the brightness and blurring of the image of the silver halide film and the image of the CCD in the PM mode.
Shown in In this example, the camera automatically determines the necessity of flash emission based on the brightness of the subject. Exposure control of the CCD at the time of flash photography is performed by the light control method β. Exposure control of the silver halide film may be performed by TTL direct light control, or may be performed by flashmatic.

When the PM shooting mode is set by the operation unit COP (FIG. 42, step # 602), initial setting is first performed (# 604). Next, the luminance of the subject is measured, and the electronic shutter speed is set to a predetermined value t (# 606). BVS
The ND filter transmittance NV is determined based on the value (# 6)
08). Based on the value determined so far, the relay throttle (A
VCCD) (# 610), and photographing with the CCD is started (# 612). The BVS changes every moment as the shooting angle and the subject change. Accordingly, the relay aperture also changes (# 614, # 616). In this state, video recording is controlled by a recording ON / OFF button.

On the other hand, when recording on a silver halide film, the release button S1ON (# 618) is used to determine whether flash photography or normal photography is to be performed based on the brightness of the subject at that time (#).
620). That is, if the subject brightness (BVS) is larger (bright) or equal to or greater than the predetermined value bs determined by the photographing lens or the like, normal photographing is performed and the process proceeds to # 622. If it is dark, flash photography is performed (# 634).

In the case of normal photographing, silver halide photographing is set (# 622), and a signal S2ON is waited for (# 624). S2
If ON is not issued, the process returns to # 614. When S2ON is issued, the aperture of the taking lens is stopped down to the set value (# 626), the shutter is opened (# 628), and after the lapse of the set time, the shutter is closed (# 630) and the film is fed (# 632). The silver halide photography ends. At the same time, the identification number and frame number of the silver halide film are recorded in the field or frame image at the same timing on the video side. Next, it is determined whether or not an instruction to end imaging of the CCD has been given (# 692), and if there is an instruction to end, the imaging is ended. If there is no end instruction, the process returns to step # 614 to continue video shooting.

In the case of flash photography, first, charging of the flash is started and the aperture value of the main lens is set (FIG. 43,
# 636, # 638). With this setting, silver halide film and C
When the same flash light is continuously given to the CD, it is checked which of the light is adjusted first. Flash dimming is performed by stopping the flash emission of the silver salt and by an electronic shutter during the flash emission of the CCD. For this reason, if the setting is made such that the silver halide side performs dimming first, the CCD side cannot perform dimming.

The confirmation is performed by comparing the shutter speed (light control time) at the time of flash light control with BVS = BVag = BV CCD. As shown in # 640, the silver salt light control time during flash light control is TVfag, and the CCD light control time is TVfCCD (A
PEX value), and the magnitude relationship between them is determined (# 64)
2). If the dimming time of the CCD is shorter (TVfCCD (A
If the PEX value is large), the setting is appropriate, and the process waits for S2ON (# 644). If the CCD dimming time is longer (if TVfCCD (APEX value) is smaller)
Incorrect setting results in setting change (FIG. 44, # 6
68).

In response to S2ON, it is first confirmed whether or not the charging of the flash is completed (# 646). If charging is not completed, a message to that effect is displayed (# 666), and the process returns to # 644. If charging is completed, stop down the aperture of the main lens (# 64)
8) Open the shutter (# 650), and start flash emission when the front curtain is fully opened (# 65).
2). First, the CCD dimming signal (# 654) from the dimming device
Then, the dimming of the CCD is terminated by the electronic shutter (# 656). Next, a dimming signal of the silver halide is received (# 65).
8) The flash is stopped (# 660). Thereafter, the rear curtain closes and the shutter closes (# 662), the film is fed (# 664), and the silver halide photography ends. At the same time, the identification number and frame number of the silver halide film are recorded in the field or frame image at the same timing on the video side. When there is no instruction to end shooting (# 692 in FIG. 42) or when there is no S2ON (# 644), the process returns to # 614 and video shooting is continued.

If the result of the determination at # 642 is false, the setting is changed (# 668 in FIG. 44) and the appropriate setting (# 670) is made.
, Silver halide photography is performed by a series of operations from # 644.
If an appropriate setting is not obtained even after the setting is changed, the setting is changed to the last in the setting range and S2ON is waited (# 6).
72). Upon receiving S2ON, it is first checked whether or not the flash has been charged (# 674). If charging is not completed, a message to that effect is displayed (# 690), and the process returns to # 672.

If the charging is completed, the aperture of the main lens is stopped down, and the other settings are changed to the settings determined in # 668 (# 676). The shutter is opened (# 678), and flash emission starts when the front curtain is fully opened (# 680). The light control signal of the silver salt from the light control element (# 68
In response to 2), the light emission of the flash is stopped at the same time as the completion of dimming of the CCD by the electronic shutter (# 684).
Thereafter, the rear curtain closes and the shutter closes (# 68).
6) The film is fed (# 688), and the silver halide photography ends. At the same time, the identification number and frame number of the silver halide film are recorded in the field or frame image at the same timing on the video side. When there is no shooting end instruction (# 692) or when there is no S2ON (# 672), the process returns to # 614 and video shooting is continued.

In this case, the after-view image is underexposed. Further, when the setting needs to be changed in # 668, the relay aperture is suddenly operated in the middle of the video, so that the video image may be disturbed. Therefore, in this case, after-view by video may not be possible.

The opening / closing of the shutter C07, the emission of the flash light, and the timing of the photoelectric conversion of the CCD follow the third synchronization control described with reference to FIG. 19 or the fourth synchronization control described with reference to FIG. That is, the shutter opening operation is started simultaneously with the start of photoelectric conversion of the CCD by the field shift pulse after the trigger signal, and the flash is emitted when the shutter is fully opened.

In this control example, the type L camera has been described.
The same control can be performed by taking into account the effect on the video side by reducing the aperture during silver halide photography.

In shooting with a twin-lens camera, PM
FIGS. 45 to 47 show examples of the control B for matching the brightness of the image of the silver halide film with the brightness of the image of the CCD in the mode. Exposure control of the CCD at the time of flash photography is performed by the light control method β. Exposure control of the silver halide film may be performed by TTL direct light control, or may be performed by flashmatic. This control is based on the silver halide film and C
The present invention can be applied to a camera having a third configuration in which a light control device is also used for a CD and a camera having a fourth configuration in which a light control device is separately provided for a silver halide film and a CCD.

The basic flow of control is the same as that in the case of the single-lens reflex camera, and only different points from FIGS. 42 to 44 will be described. In the twin-lens type, the light from the taking lens
Since there is no division, the pellicle mirror is not involved, and initial settings (FIG. 45, step # 704), AVCCD settings (# 7)
16) and the definition formula of flash emission time for obtaining the same brightness (# 740 in FIG. 46). Also, since the opening and closing of the shutter is a lens shutter,
As shown in FIGS. 19 and 20, the lens shutter C5
Flash emission is started when the aperture is opened to the aperture corresponding to the determined aperture value (# 752 in FIG. 46 and # 780 in FIG. 47).

In photographing with a single-lens reflex camera,
FIG. 4 shows an example of control D for matching the brightness, blurring, and blurring of the image of the silver halide film and the image of the CCD in the PM mode.
8 to 50. CCD for flash photography
Is controlled by the light control method β. Exposure control of the silver halide film may be performed by TTL direct light control, or may be performed by flashmatic. This control is applied to type M and type ML cameras.

The basic flow of the control is the same as that of the control B, and only the differences from FIGS. 42 to 44 will be described. In order to equalize the amount of blur, the relationship between the relay aperture and the main lens aperture is set so as to satisfy Expression (5). AVag + βV = AVCCD (5) (repost)

Therefore, the initial setting (FIG. 48, step #)
804) and the setting of the silver halide aperture value (# 838 in FIG. 49). When the setting of # 838 cannot be performed, case division is necessary. However, since all the divided processes become complicated when illustrated, only cases where setting is possible are shown here.

As described above, in the twin-lens camera, matching the brightness, blurring, and blurring of the image of the silver halide film and the image of the CCD all requires a large difference in the light receiving area between the silver halide film and the CCD. It is not easy because there is (see Table 3). However, considering the following points,
It is possible to match the degree of blurring in addition to the degree of brightness and blurring.

A criterion for judging whether or not an image is blurred is an allowable circle of confusion. The permissible circle of confusion is the maximum size that can be judged as a point. When light from one point is imaged, the image is recognized as a point if the diameter of the image is equal to or smaller than the diameter of the permissible circle of confusion, and if the diameter of the image exceeds the diameter of the permissible circle of confusion, the image becomes a point. It is recognized that there is no blur. The diameter of the permissible circle of confusion is generally 1/1000 to 1 of the screen diagonal length.
/ 1500, which is typically about 0.033 mm for 135 systems. Since the permissible circle of confusion is small but finite, not only when the taking lens is perfectly focused on the subject, but also when the subject is within the depth of field, the light from one point on the subject Forms an image within a range of an allowable circle of confusion.

Here, it is considered that unifying the blur amount between the image of the silver halide film and the image of the CCD is equivalent to unifying the depth of field for the silver halide film and the depth of field for the CCD. The depth of field is given by equation (34). Depth of field = out-of-focus amount x vertical magnification = out-of-focus amount x ｛-(horizontal magnification) ² ｝ (34)

Here, when the distance to the subject is represented by R (mm) and the focal length of the lens is represented by f (mm), the lateral magnification is expressed by the following equation (3).
Defined in 5). Further, when the out-of-focus amount is considered to be the out-of-focus length, and the FNo. Of the lens at the time of photographing is represented by F and the permissible circle of confusion is represented by d (mm), the out-of-focus amount is defined by Expression (36). Lateral magnification = R / f (35) Out-of-focus amount = F × d (36)

By substituting equations (35) and (36) into equation (34), the depth of field (mm) is expressed by equation (37). Depth of field = -F * d * (R / f) ² (37)

Now, subscripts of ag are given to silver halide films, and subscripts of CCD are given to CCDs.
The focal length and FNo. Of the photographing lens and the permissible circle of confusion are separately described. Depth of field of silver halide film and C
Since the depth of field of the CD is made to match, the equation (37)
Equation (38) is derived from equation (38), and R is eliminated from equation (38) to obtain equation (39). −Fag × dag × (R / fag) ² = −FCCD × dCCD × (R / fCCD) ² (38) Fag / FCC = (fag / fCCD) ² / (dag / dCCD) (39)

When the ratio of the diagonal length of the silver halide film to the diagonal length of the CCD is represented by m, the focal length of the photographing lens is proportional to the diagonal length, so that equation (40) holds. fag / fCCD = m (40)

Also, the diameter d of the permissible circle of confusion of the silver halide film
Formula (41) holds when the ratio of ag to the diameter dCCD of the permissible circle of confusion of the CCD is represented by m '. dag / dCCD = m '(41)

By substituting the equations (40) and (41) into the equation (39), the relational equation (42) of the aperture value of the photographing lens is obtained. Further, if the diameter of the permissible circle of confusion is set in proportion to the diagonal length, m ′ = m, and equation (24) is obtained. ^{Fag / FCCD = m 2 / m} '(42) Fag / FCCD = m (24) ( shown again)

By satisfying the expression (42) or the expression (24), it is possible to make the degree of blur between the image of the silver halide film and the image of the CCD coincide, and also make the brightness of both images coincide. It should be noted that the degree of blurring of the image is substantially the same in flash photography.

The C-format of the new photo system (screen size: 25.1 × 16.7 mm, diagonal: 30.1)
mm), and specific numerical values will be shown taking as an example a case where a 2/3 inch (screen diagonal 11.0 mm) CCD is used.
The ratio m of the diagonal length between the silver halide film and the CCD is 2.74. In order to satisfy Expression (40), for example, the focal length fag of the photographing lens of the silver halide film is set to 50 mm, and the focal length of the photographing lens of the CCD is set to 18.2 mm.

The permissible circle of confusion of the silver halide film is set to 1 / diagonal length.
As 1300, dag is set to 0.023 (mm).
Similarly, assuming that the permissible circle of confusion of the CCD is 1/1300 of the diagonal length, dCCD is set to 0.0085 (mm). With this setting, m ′ = m, and equation (43) is obtained from equation (24). Fag / FCCD = 2.74 (43)

If the aperture of the taking lens is set so as to satisfy the relationship of Expression (43) when the flash is fired, the image of the silver halide film and the image of the CCD with the same brightness, blurring, and blur are obtained. Obtainable.

As described above, in the present invention, a CCD image is used as a release view or an after view of a silver halide film image. Therefore, the photographer can know what kind of photograph was taken without waiting for the development of the silver halide film. These features include composition, image brightness,
It is desired to reproduce the degree of blur and blur, but in the present invention,
The composition and the brightness of the image are reliably reproduced, and the reproducibility is not impaired even in flash photography. Further, with respect to the degree of blur and the degree of blur, both or a desired one can be reproduced while ensuring reproducibility of the composition and the brightness of the image. Also, shadows generated by flash photography are well reproduced.

By using the release view function, when desired photographing cannot be performed, photographing can be immediately performed again with different photographing conditions, and a desired photograph can be easily obtained.

[0288]

According to the first aspect of the present invention, it is possible to know the brightness of a silver halide photosensitive image simply by looking at the displayed image, and the displayed image does not have the desired brightness. In such a case, it is possible to change the exposure condition and immediately re-photograph. Further, for a frame whose brightness is not appropriate, post-processing can be stopped only for development and fixing, so that useless printing can be avoided.

In the camera according to the second aspect, the brightness of the image of the second photographing means can be adjusted by the second aperture, and the brightness of the image can be adjusted by the brightness of the image of the first photographing means. Is easy to match. Further, since the same light is divided and used for photographing, no parallax occurs between the first photographing means and the second photographing means.

According to the third aspect of the present invention, the brightness of a silver halide photosensitive image can be known from the displayed image when flash photography is performed. If the displayed image is not the desired brightness, it is possible to reset the exposure condition including the flash light emission amount and the light emission time and immediately re-photograph.

According to the camera of the fourth aspect, an image with proper exposure can be taken in accordance with the sensitivity of the silver salt photosensitive agent. Moreover, since the sensitivity of the photoelectric conversion system is set according to the sensitivity of the silver halide sensitizer, the brightness of the image of the silver halide sensitization system can always be known from the displayed image regardless of the sensitivity of the silver halide sensitizer. It is possible.

According to the camera of the fifth aspect, simply by adjusting the aperture of the relay optical system and the transmittance of the ND filter,
The brightness of the image by the photoelectric conversion method can be made the same as the brightness of the image by the silver halide photosensitive method.

In the case of the camera according to the sixth aspect, the photoelectric conversion time can be set separately from the flash emission time. Therefore, irrespective of the sensitivity of the silver salt sensitizer, an image with proper exposure can be taken by the silver salt sensitization method, and an image having the same brightness can be obtained by the photoelectric conversion method. In addition, since the silver halide exposure and the photoelectric conversion are started at the same time, the composition of the images of both types becomes substantially the same.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first configuration example of a camera according to the present invention.

FIG. 2 is a top view showing the appearance of the camera of the first configuration example.

FIG. 3 is a rear view showing the appearance of the camera of the first configuration example.

FIG. 4 is a front view showing the appearance of the camera of the first configuration example.

FIG. 5 is a low-side view showing the appearance of the camera of the first configuration example.

FIG. 6 is a diagram showing information displayed on a display unit of the camera according to the first configuration example.

FIG. 7 is a diagram showing a second configuration example of the camera of the present invention.

FIG. 8 is a diagram showing a third configuration example of the camera of the present invention.

FIG. 9 is a diagram showing a fourth configuration example of the camera of the present invention.

FIG. 10 is a diagram showing the size of a light receiving range of a 135 film.

FIG. 11 is a diagram showing the size of a light receiving range of a CCD.

FIG. 12 is a flowchart showing the flow of processing for determining a release timing.

FIG. 13 is a flowchart showing the flow of a shooting process in a silver halide shooting mode.

FIG. 14 is a flowchart showing the flow of shooting processing in the simultaneous shooting mode.

FIG. 15 is a timing chart showing synchronous control of photographing in the silver halide photographing mode.

FIG. 16 is a timing chart showing synchronous control of photographing in the simultaneous photographing mode.

FIG. 17 is a timing chart showing first synchronization control in flash photography.

FIG. 18 is a timing chart showing a second synchronization control in flash photography.

FIG. 19 is a timing chart showing a third synchronization control in flash photography.

FIG. 20 is a timing chart showing a fourth synchronization control in flash photography.

FIG. 21 is a timing chart showing fifth synchronization control in flash photography.

FIG. 22 is a timing chart showing a sixth synchronization control in flash photography.

FIG. 23 is a view showing the relationship between the light emission amount of a flash and first and second dimming signals.

FIG. 24 is another diagram showing the relationship between the light emission amount of the flash and the first and second dimming signals.

FIG. 25 is a diagram showing a configuration related to exposure control of a camera.

FIG. 26 is a flowchart showing a basic flow of an exposure control process.

FIG. 27 is a flowchart showing the flow of exposure control processing for matching the brightness of an image with the degree of blur in a silver halide shooting mode.

FIG. 28 is a flowchart showing the flow of exposure control processing for matching the brightness of an image with the degree of blur in the silver halide shooting mode.

FIG. 29 is a flowchart showing a part of the flow of exposure control processing for matching the brightness, blurring, and blurring of an image in the silver halide shooting mode.

FIG. 30 is a flowchart showing the flow of processing following FIG. 29;

FIG. 31 is a flowchart showing the flow of another process following FIG. 29;

FIG. 32 is a flowchart showing the flow of processing subsequent to FIG. 31.

FIG. 33 is a flowchart showing the flow of a first exposure control process for matching the brightness of an image in the simultaneous shooting mode.

FIG. 34 is a flowchart showing the flow of a second exposure control process for matching the brightness of an image in the simultaneous shooting mode.

FIG. 35 is a flowchart showing a part of the flow of exposure control processing for matching the brightness of an image with the degree of blur in the simultaneous shooting mode.

FIG. 36 is a flowchart showing the flow of processing following FIG. 35;

FIG. 37 is a flowchart showing a flow of exposure control processing for matching the brightness, blurring, and blurring of an image in the simultaneous shooting mode.

FIG. 38 is a view showing the principle of exposure control in flash photography.

FIG. 39 is a flowchart showing the flow of a first exposure control process for matching the brightness and blurring of an image in flash photography in the silver halide photography mode.

FIG. 40 is a flowchart showing the flow of a first exposure control process for matching the brightness of an image with the degree of blur in flash photography in the simultaneous photography mode.

FIG. 41 is a diagram illustrating a first example of matching brightness, blurring, and blurring of an image in flash shooting in a silver halide shooting mode.
9 is a flowchart showing a flow of exposure control processing.

FIG. 42 is a flowchart showing a part of the flow of a second exposure control process for matching brightness and blurring of an image in flash photography in the silver halide photography mode.

FIG. 43 is a flowchart showing the flow of processing following FIG. 42;

FIG. 44 is a flowchart showing the flow of processing following FIG. 43;

FIG. 45 is a flowchart showing a part of the flow of a second exposure control process for matching the brightness and blurring of an image in flash photography in the simultaneous photography mode.

FIG. 46 is a flowchart showing the flow of processing following FIG. 45;

FIG. 47 is a flowchart showing the flow of processing following FIG. 46;

FIG. 48 shows a second method of matching brightness, blurring, and blurring of an image in flash photography in the silver halide photography mode.
9 is a flowchart showing a part of the flow of the exposure control process.

FIG. 49 is a flowchart showing the flow of processing following FIG. 48;

FIG. 50 is a flowchart showing the flow of processing following FIG. 49;

[Explanation of symbols]

C Camera main unit C01 Operation control unit C02 Focus state detection unit C03 Camera shake detection unit C04 Pellicle mirror (light splitting unit) C05 Sub-mirror C07 Shutter C08 Silver halide film (first imaging unit) C09 Film supply unit C10 Condenser lens C11 Mirror C12 Brightness detector (light control element) (photometric means) C13 ND filter C14 relay optical system C18 relay aperture (second aperture) C19 relay optical system controller C21 CCD (second imaging means) C22 A / D converter C23 CCD Drive unit C24 Image processing unit C25 Recording / reproducing unit C27 Image display unit (Display unit) C28 Magnetic tape C31 Audio processing unit COP operation unit L Photographing lens (main lens) L05 Focal length detection unit L06 Operation control unit L07 Zoom motor L09 Fo Cas motor L11 Aperture (first iris) F Flash & light (light emitting means) LF photographic lens (for silver halide film) LE photographic lens (for CCD) C50 Shutter C12a, C12b Photometry element (dimming element) (photometry means) C41 Half mirror

Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical indication location H04N 5/225 H04N 5/225 F 5/335 5/335 F

Claims (6)

[Claims] 1. A first photographing means using a silver halide photosensitive system,
A second photographing unit using a photoelectric conversion method; and a display unit displaying an image photographed by the second photographing unit. The photographing by the first photographing unit and the photographing by the second photographing unit are performed. In the simultaneous camera, the image taken by the first photographing means and the second
A camera which controls exposure so that images taken by the photographing means have the same brightness, and displays an image photographed by the second photographing means on the display means. 2. A main lens having a first stop, and a light transmitted through the main lens is split into a first light and a second light, and
A light splitting means for giving the first light to the first photographing means;
A relay optical system having an aperture for guiding the second light to the second photographing means, wherein brightness of an image photographed by the second photographing means is photographed by the first photographing means. 2. The camera according to claim 1, wherein the exposure of the second photographing unit is controlled so as to match the brightness of the image. 3. A first photographing means using a silver halide photosensitive system,
A second light emitting unit that emits flash light toward an object to be photographed; and a display unit that displays an image photographed by the second photographing unit. A camera that simultaneously performs shooting by the first shooting unit and shooting by the second shooting unit, wherein an image shot by the first shooting unit and the second
A camera which controls exposure so that images taken by the photographing means have the same brightness, and displays an image photographed by the second photographing means on the display means. 4. The second photographing means controls the exposure of the first photographing means by flash light control, and adjusts the relative sensitivity of the second photographing means to the sensitivity of the first photographing means. 4. The camera according to claim 3, wherein the brightness of the captured image is adjusted to the brightness of the image captured by the first capturing unit. 5. A main lens having a first stop, light splitting means for splitting light transmitted through the main lens into two, and providing one of the split lights to the first photographing means, A relay optical system having an iris and an ND filter capable of changing the transmittance, and guiding the other light split by the light splitting means to the second photographing means, and the amount of flash light transmitted through the main lens and incident The camera according to claim 4, further comprising: a light control element that measures the light intensity. 6. A first photographing means using a silver halide photosensitive system,
A second photographing means using a photoelectric conversion method, a light emitting means for emitting flash light toward the photographing object, and measuring a light amount from the photographing object and outputting a signal when the measured light amount reaches a predetermined amount. A camera that has a photometric unit that performs photographing by the first photographing unit and photographing by the second photographing unit simultaneously with emission of the light emitting unit. A camera characterized in that the photoelectric conversion of the second photographing means is started at the same time, then the flash emission of the light emitting means is started, and the photoelectric conversion of the second photographing means is terminated by the output signal of the photometric means.