JPH10104736A - Camera for silver salt image pickup compatible with electronic image pickup - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an image and a latent image exposed on a film in a silver salt image pickup device coincide by a monitoring means of an electronic image pickup device in a camera having both functions of the electronic image pickup device and the silver salt image pickup device. SOLUTION: An image pickup optical system of the electronic image pickup device 3 is constituted to incorporate all image pickup pictures from the shortest image pickup distance to a described limited image pickup distance in the silver salt image pickup device 5 within the range of image pickup pictures of an electronic image pickup element. The image pickup pictures are stored with a memory 2 and are simultaneously transferred to an image mask magnifying means 4, too. The pictures outside the range of pictures to be photographed with the silver salt image pickup device 5 within the image pickup range are subjected to masking process and are displayed on a monitor 1. Further, the range corresponding to the pictures to be picked up are subjected to the magnifying process and displayed with the silver salt image pickup device 5 within the image pickup range so as to match a display area of the monitor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has both functions of an electronic image pickup device having an electronic image pickup device for converting a subject image into an image signal and a silver halide photographing device for photographing the subject image on a silver halide film. , A silver halide photography and an electronic imaging camera.

[0002]

2. Description of the Related Art Conventionally, a camera for both silver halide photography and electronic imaging in which a subject image is exposed to a silver halide film and the subject image photoelectrically converted by an electronic image pickup device is stored in a memory at the same time. For example, Japanese Unexamined Patent Publication No. 1-1456
41, a half mirror is installed in a finder optical system to split a light beam to an image sensor, and a display for storing an image signal from the image sensor and displaying the image signal as a still image is provided. A camera is shown that can be checked.

[0003]

In a silver halide camera, it is generally impossible to determine at the time of photographing whether an image photographed on film is photographed as intended by the photographer. As a solution to the above contents, Japanese Patent Laid-Open No. 1-145641
Is equipped with a half-mirror in the viewfinder optical system to split the light flux to the image sensor, and to store the image signal from the image sensor and display it as a still image to immediately check the captured image. A camera that allows you to do so is shown.

However, in Japanese Patent Application Laid-Open No. 1-145641, an imaging optical system for guiding the subject light to the imaging device and a photographic optical system for guiding the subject light to the silver halide film are separated. Parallax occurs. That is, when the imaging range of the imaging optical system shifts, the image displayed on the display and the latent image captured on the film differ.

The problem to be solved by the present invention has been made in view of the above-mentioned problems, and an electronic image pickup apparatus having an electronic image pickup device for converting a subject image into an electric signal; In a camera for both silver halide photography and electronic imaging having both functions of a silver halide photography apparatus for projecting a film on a silver halide film, an image displayed on a monitor means by the electronic imaging means is the same as a latent image exposed on the film. Is to do so.

[0006]

According to a first aspect of the present invention, there is provided a camera for both silver halide photography and electronic imaging, comprising an electronic imaging device for converting a subject image into an image signal. Means, a monitor means for displaying a subject image based on an output signal of the electronic imaging means, and a silver halide photographing means for exposing the subject image to a silver halide film,
The imaging optical system of the silver halide imaging means and the imaging optical system of the electronic imaging means are arranged at a predetermined distance. The imaging optical system of the electronic imaging unit is characterized in that all imaging screens from the shortest possible imaging distance to a predetermined finite imaging distance in the silver halide imaging apparatus are included in the imaging screen of the electronic imaging device. And

Further, in the camera for both silver halide photography and electronic imaging according to the second aspect, mask processing is performed on the monitor except for a screen range photographed by the silver halide photography means in the electronic imaging range. It is characterized by displaying. Further, in the camera for both silver halide photographing and electronic imaging according to claim 3, a range corresponding to a screen photographed by the silver halide photographing unit in the imaging range of the electronic imaging unit is a display area of the monitor. It is characterized in that enlargement processing is performed so as to match and display on a monitor.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention. An electronic image pickup device 3 including an image pickup device (not shown) and a subject image (image input 8) passing through a not-shown photographing lens are provided at positions where the object light (image input 7) transmitted through the image pickup lens (not shown) can be received. Is exposed to a silver halide film.
The imaging device 3 and the silver halide photographing device 5 are connected to a control device 9, and these devices 3 and 5 are operated simultaneously or selectively by the control device 9.

The electronic image pickup device 3 converts the subject image formed on the image pickup device into an analog video signal and then performs a known digital conversion, and transfers the converted electronic image to the memory 2. Store the electronic image. On the other hand, the subject image formed on the film surface (not shown) in the silver halide photographing device 5 is recorded on the film as a latent image when the shutter is opened. The monitor 1 is connected to the memory 2 and displays an electronic image stored in the memory 2.

The photographing optical system of the silver halide photographing device 5 and the imaging optical system of the electronic imaging device 3 are arranged at a predetermined distance. The imaging optical system of the electronic imaging means is configured so that all imaging screens from the shortest possible imaging distance to a predetermined finite imaging distance in the silver halide imaging apparatus are included in the imaging screen of the electronic imaging device. In addition, in the image capturing range of the electronic image capturing device 3, a mask process is performed on the image read from the memory 2 by the image mask enlarging processing unit 4 except for the screen range captured by the silver halide capturing device 5. To display on the monitor.

Alternatively, of the image pickup range of the electronic image pickup device 3, a range corresponding to a screen photographed by the silver halide photographing device 5 is adjusted so as to match the display area of the monitor 1. By the memory 2
Monitor 1 by applying enlargement processing to the image read from
To be displayed. Next, a first embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the silver halide photographing apparatus of the present invention is applied to a so-called single-lens reflex camera, and an area sensor as an image sensor of the electronic imaging apparatus 3 is arranged beside a strobe light emitting unit. 2A and 2B are perspective views of the camera according to the present embodiment, wherein FIG. 2A is a front view and FIG. 2B is a rear view.

Numeral 10 denotes a two-stage push switch for performing distance measurement, photometry, shooting on film, or imaging with an area sensor.
This is a so-called release button specified by the camera operator.
Reference numeral 11 denotes a press switch for the camera operator to specify a shooting mode of the camera, 15 denotes a slide power switch for turning on / off the power of the camera, and 14 denotes a flip-up (pop-up) strobe light emitting unit. And jumps to a predetermined position in conjunction with the ON operation of the power switch 15. The strobe light emitting unit 14 has a built-in strobe light tube, strobe reflector, and area sensor.

Reference numeral 12 denotes a lens which is a part of an image pickup optical system for picking up an image of a subject by the area sensor, and reference numeral 13 denotes a translucent panel for diffusing light emitted from the strobe. Reference numeral 16 denotes a seesaw-type operation button for zooming up and down for changing the focal length of the photographing lens of the silver halide photographing apparatus. Reference numeral 17 denotes a finder eyepiece for observing subject light transmitted through a photographing lens of the silver halide photographing apparatus. Reference numeral 18 denotes a color liquid crystal panel for displaying an image captured by the area sensor.

FIG. 3 is a block diagram showing a system according to the first embodiment. A photographic lens for forming a subject image includes a positive lens 40 and a negative lens 42, and an aperture mechanism 41 is disposed between the photographic lenses. The aperture mechanism 41 is driven and controlled by an aperture drive circuit 51. . Behind the negative lens 42, there is provided a movable mirror 43 whose central part is a half mirror, and a sub mirror 47 is provided on the central rear part of the movable mirror 43 so as to reflect the subject light downward. Have been.

A separator optical system 48 for separating two images, which is composed of two optical systems, is arranged in the direction of the reflection optical axis of the sub-mirror 47 and perpendicular to the drawing. A line sensor 49 is disposed at a position where the object image is formed by the separator optical system 48, and the line sensor 49 is connected to a line sensor drive circuit 53. The sub-mirror 47, the separator optical system 48, the line sensor 49, and the like constitute a focus detection device based on a known phase difference method, and the CPU 60 controls two images based on a signal input via the line sensor drive circuit 53. Is calculated, and the driving amount of the photographing lens for driving to the focusing position is calculated.

Each of the lenses 40 and 42 of the photographing lens is provided with a zoom / focus drive circuit 50 for controlling a drive source for a focus adjustment operation and a zooming operation. The zoom / focus drive circuit 50 has an encoder (not shown) that generates a signal in accordance with the movement of the lens, and the CPU 60 performs focus adjustment based on the calculated drive amount and the encoder output. . A finder optical system 62 is provided on the reflection optical path of the movable mirror 43. The eyepiece corresponds to 17 in FIG. 2B, and the camera operator can take a picture while looking through the finder.

In the strobe generating unit (corresponding to 14 in FIG. 2), a light emitting tube 38, a reflector 37 and a light emitting panel 39 corresponding to the translucent panel 13 in FIG. It operates for subject illumination at the time of exposure or at the time of imaging with the area sensor 34. Further, an imaging lens 36 (corresponding to 12 in FIG. 2), a fixed stop 35, and a two-dimensional area sensor 34 are arranged in the strobe light emitting unit. The area sensor 34 is controlled by the area sensor drive circuit 32 to form an image. The subject image is converted into an analog video signal and output to the signal processing circuit 31. This signal processing circuit 31 includes a video memory 30 and a color liquid crystal (hereinafter, referred to as a color liquid crystal).
It is connected to a monitor 33 (referred to as an LCD) and via a data bus 57 to a non-volatile memory 59 and the like.

The signal processing circuit 31 transfers the processed signal to the video memory 30 and the nonvolatile memory 59, and the electronic image stored in the video memory 30
3 is displayed. The non-volatile memory 59 is attachable to the camera main body, is electrically rewritable, and retains the storage of the electronic image even when the power of the camera main body is turned off, and thus is used for recording the electronic image. The digital data obtained by the signal processing circuit 31 can be used as a photometric value in an exposure calculation at the time of film exposure by performing a predetermined process.

The signal processing circuit 31 transfers the processed signal to the video memory 30 and the nonvolatile memory 59, and the electronic image stored in the video memory 30
3 is displayed. The non-volatile memory 59 is attachable to the camera main body, is electrically rewritable, and retains the storage of the electronic image even when the power of the camera main body is turned off, and thus is used for recording the electronic image.

The above-mentioned movable mirror 43 is a mirror driving circuit 5
2 and the shutter 44 is driven by a shutter drive circuit 54. When the movable mirror 43 is raised and the shutter 44 is opened, the silver halide film 4
A subject image is formed on 5 and exposed. The CPU 60 calculates the aperture value and the shutter speed of the aperture 41 for obtaining the proper exposure based on the subject luminance value obtained from the signal processing circuit 31 and the film sensitivity detected by a film sensitivity detection circuit (not shown). The drive 44 is controlled at the calculated shutter speed.

A magnetic recording layer is formed on the silver halide film 45, and a magnetic head 46 is arranged so as to be in contact with the magnetic recording layer. The magnetic head 46 magnetically records various information and is driven by the output of the magnetic head drive circuit 55. Further, a film drive circuit 56 is provided in the camera body, and when the photographing of one frame is completed, the film 45 is wound up. The magnetic recording by the magnetic head 46 is performed during the winding operation. The camera is provided with a strobe circuit 58 for illuminating the subject, and operates so as to emit auxiliary light when the CPU 60 determines that the subject brightness obtained by the signal processing circuit 31 is lower than a predetermined brightness. I do.

The switch input 61 includes a plurality of switches such as an operation switch (not shown) and a switch for detecting the operation of a mechanical mechanism. The signal processing circuit 31, strobe circuit 58, nonvolatile memory 59, CPU 60, magnetic head drive circuit 55, film drive circuit 56, shutter drive circuit 54, line sensor drive circuit 53, mirror drive circuit 52, aperture drive circuit 51 described above. The zoom / focus driving circuit 50 is connected by a data bus 57 to exchange data. The operation of these driving circuits is
0 controls the entire system.

FIG. 4 shows the photographing range (angle of view) of the camera according to the first embodiment. At this time, the focal length of the photographing lens of the silver halide photographing device is set to the widest side.
(A) shows a state in which the shooting angle of view corresponding to the lateral direction of the silver halide film is θ ₁ and the angle of view of the area sensor at this time is α ₁ . In (b), the shooting angle of view corresponding to the vertical direction of the silver halide film is θ ₂ , and the angle of view of the area sensor is α ₂ . In (a) and (b), assuming that the shortest photographing distance of the silver halide photographing device is l _s and a predetermined finite photographing distance is l _x , the image captured by the area sensor at the photographing distances L = l _S and L = l _x . The angle α is configured to cover the shooting angle of view θ of the silver halide shooting apparatus.

FIG. 5 shows a state in which a subject image picked up by the area sensor is displayed on the LCD monitor 33 as an erect image. However, since the range of the subject image photographed by the silver halide photographing apparatus is as shown in FIG. 6, at the photographing distance L = l _S , the left and right and upper sides of the screen (outside the dotted line), the photographing distance L = in l _X is (lower portion dotted) underlying the screen will not have been taken. That is, the image displayed on the LCD monitor is different from the image captured on the film by the silver halide photography device.
Therefore, in the present invention, mask processing is performed on a range not photographed by the silver halide photographing apparatus as shown in FIG.
Display on CD monitor. Alternatively, as shown in FIG. 8, the range photographed by the silver halide photographing device is enlarged and displayed on the LCD monitor.

As is apparent from FIG. 4, the relationship between the photographing range of the silver halide photographing device and the photographing range of the area sensor depends on the photographing angle of view of the area sensor, the photographing focal length of the silver halide photographing device, and the subject distance. Decided. The mask processing;
The enlargement process will be described with reference to FIG. By the above-mentioned focus detection device using the known phase difference method, the CPU 6
0 calculates the distance between the two images based on the signal input via the line sensor drive circuit 53 and calculates the drive amount of the photographing lens for driving to the in-focus position.

A zoom / focus drive circuit 50 for controlling the driving sources for the focus adjustment operation and the zooming operation of each lens 40, 42 of the photographing lens generates a signal in accordance with the movement of each lens, not shown. An encoder is provided, and the CPU 60 performs focus adjustment based on the calculated drive amount and the encoder output. At this time, CP
U60 can determine the focal length of the taking lens based on the encoder output. Further, the CPU 60
Calculates the distance to the subject from the encoder output at the current in-focus position by a known calculation.

As described above, after the image signal fetched from the area sensor 34 is stored in the video memory 30 (or may be the nonvolatile memory 59), a region to be masked from the focal length of the photographic lens and the subject distance or After setting an enlargement magnification and performing a mask process or an enlargement process, the image data is stored in the video memory 30 or the nonvolatile memory 59 again. Further, the signal processing circuit 31 displays the stored image on the LCD monitor 33. As described above, the masking area or the magnification is set based on the focal length of the photographing lens and the subject distance, so that the subject image is located anywhere between the optimal photographing distance 1s and the finite photographing distance 1x. , It is possible to perform the optimal mask processing or enlargement processing.

Referring to FIG. 9, the operation of the camera will be described with reference to a flowchart. First, when the first release is pressed, a shooting subroutine of step S1 is called from a main routine (not shown). The release of this camera is 2
It is a push button with a step configuration, the first release,
Called the second release. Next, in step S2, focus adjustment is performed. This focus adjustment is performed by the line sensor 49.
Based on the output signal, the driving amount of the taking lens to the in-focus position is calculated from the interval between the two images, and the taking lens is driven. At this time, the absolute distance to the subject is also calculated based on the number of encoder pulse signals from the reference position (for example, the position at infinity) of the taking lens.

Next, in step S3, the luminance of the subject is measured based on the output from the area sensor 34, and based on the measured photometric value and the film sensitivity detected by a film sensitivity detection circuit (not shown), When exposure is performed using a silver halide film (silver halide photographing apparatus), a shutter speed and an aperture value capable of obtaining an appropriate exposure are calculated (step S4). Next, an image signal is fetched from the area sensor 34 (step S5).
1 performs predetermined signal processing on the captured image (step S6), converts the digital image into an electronic image converted into digital data, stores the electronic image in the video memory 30, and then stores the digital image in the non-volatile memory 59.
Is transferred and stored (step S7).

The video memory 30 or the nonvolatile memory 59 processes the stored electronic image (step S8), and displays the processed electronic image on the LCD monitor 33 (step S9). The processing will be described. Based on the photographing focal length of the silver halide photographing apparatus and the subject distance calculated at the time of the focus adjustment, the screen range of the electronic image stored in the video memory 30 or the nonvolatile memory 59 is determined. The area to be photographed on the silver halide film is determined.

According to the technique described in claim 2 of the present invention, an electronic image other than a range photographed on a silver halide film is processed,
On the LCD monitor 33, it is displayed as if it were painted in a single color (for example, black). This is to convert color and luminance information of digital data forming an electronic image into a single color (for example, black). According to the technology described in claim 3 of the present invention, an enlargement process is performed on an electronic image corresponding to a range photographed on a silver halide film, and L
It is displayed on the CD monitor 33.

Next, in step S10, it is determined whether or not the second release switch has been pressed, and if not, step S10 is repeated. On the other hand, if the second release switch has been pressed, the flow shifts to the exposure sequence of the silver halide imaging device and the imaging sequence of the electronic imaging device in and after step S11. First, the aperture mechanism 41 is stopped down by the aperture value calculated in step S4 (step S4).
11), the movable mirror 43 is retracted upward (step S)
12), the shutter 44 is controlled so that the shutter speed value calculated in step S4 is attained, a subject image is exposed on the silver halide film 45 to form a latent image on the film 45, and at the same time, an image signal is output from the area sensor 34. Capture (step S13).

Next, the signal processing circuit 31 performs predetermined signal processing on the fetched image (step S14).
The digital image is converted into an electronic image converted into digital data, stored in the video memory 30, and then transferred and stored in the nonvolatile memory 59 (step S15). When the exposure and the storage of the electronic image are completed, the retracted movable mirror 43 is returned to the original position (step S16), the diaphragm is driven to the initial position (usually an open aperture value) (step S17), and the film is driven. Circuit 5
6, the film 45 is wound up by one frame (step S18).

Next, in steps S19 and S20, the same processing as in steps S8 and S9 is performed. Step S1
The reason why the image signal is captured and displayed again in step 3 is to make the image displayed on the LCD monitor 33 the same as the latent image exposed on the film. Next, a second embodiment of the present invention will be described with reference to FIGS. This embodiment is a case where the silver halide photographing apparatus of the present invention is applied to a so-called lens shutter camera.

FIG. 10 is a perspective view of the camera of this embodiment.
(A) is a front view, (b) is a rear view. 100 is a two-stage release button similar to 10 in FIG. 2, 101 is a strobe light emission window, 102 is a photographing lens of a silver halide photographing device, 1
Reference numeral 05 denotes a finder light receiving window, and reference numeral 106 denotes a zoom-in / up position for changing a focal length of a photographing lens of the silver halide photographing device.
This is an operation button for down. Note that the camera operator can check the subject from the finder eyepiece 107.

This is because the camera operator can use the LCD
If the photographing is performed while looking at the monitor, the holding performance of the camera may be degraded and the camera may be blurred. The measurement of the object distance is performed by a so-called infrared active method.
Reference numeral 3 denotes an infrared light projecting window, and 104 denotes a light receiving window for receiving the projected infrared light. Further, the area sensor of the electronic imaging device is arranged in a part of the finder optical system, and the image signal taken from the area sensor is displayed as an electronic image on the LCD monitor 108 after performing the processing described later.

FIG. 11 is a block diagram showing a system according to the second embodiment. A photographic lens for forming a subject image on a film includes a positive lens 128 and a negative lens 130.
And a shutter mechanism 129 between the photographing lenses.
The shutter mechanism 129 is driven and controlled by a shutter drive circuit 136. Each of the lenses 128 and 130 of the photographing lens is provided with a zoom / focus drive circuit 135 that controls a drive source for a focus adjustment operation and a zooming operation, and has the same function as 50 in FIG.

From the infrared light emitting element 138 to the light projecting lens 137
Is reflected by the subject and passes through the light receiving lens 140 to the PSD (POSITION SECTION).
(N-SITIVE DEVICE) 141.
This is a known infrared active distance measuring system that measures the distance to a subject by the principle of triangulation. Reference numeral 139 denotes a light emitting element driving circuit that drives the infrared light emitting element 140, and 142 denotes a distance measuring circuit that converts an analog output signal of the PSD 141 into digital and outputs distance information. From the distance information, a driving amount for driving the photographing lens to the in-focus position is calculated.

Apart from the photographing optical system, the finder optical system 1
The subject light incident from the finder light receiving window 105 in FIG. 10 passes through the finder optical system 125 and the half mirror 126 and can be observed by the eyepiece optical system 127. The subject light reflected by the half mirror 126 forms an image on the two-dimensional area sensor 124. The area sensor 124 is controlled by the area sensor drive circuit 122, converts the formed subject image into an analog video signal, and outputs the analog video signal to the signal processing circuit 121. The signal processing circuit 121 performs predetermined signal processing including conversion of the analog video signal into a digital signal.

This signal processing circuit 121 is a video memory 1
20 and the LCD monitor 123, as well as to a nonvolatile memory 144 via a data bus 147. The signal processing circuit 121 transfers the processed signal to the video memory 120 and the nonvolatile memory 144, and the electronic image stored in the video memory 120
It is displayed on the monitor 123. The signal processing circuit 1
The digital data obtained at 21 can be used as a photometric value in an exposure calculation at the time of film exposure by subjecting the digital data to predetermined processing.

When the shutter 129 is opened, a subject image is formed on the silver halide film 131 and is exposed. In addition,
The CPU 145 calculates the shutter opening time for obtaining the proper exposure based on the subject luminance value obtained from the signal processing circuit 121 and the film sensitivity detected by a film sensitivity detection circuit (not shown), and the shutter 129 calculates the calculated opening time. Just open. As shown in FIG. 3, the magnetic head 13 is placed on the silver halide film 131 so as to be in contact with the magnetic recording layer.
2 are arranged.

The magnetic head 132 magnetically records various information, and is driven by the output of the magnetic head drive circuit 133. Further, a film driving circuit 1 is provided in the camera body.
When one frame has been photographed, a winding operation is performed on the film 131. The magnetic head 1
The magnetic recording by 32 is performed during this winding operation. Furthermore, if the subject brightness is lower than the predetermined brightness, the CPU
If it is determined at 145, the light operates as auxiliary light.

The switch input 146 includes a plurality of switches such as an operation switch (not shown) and a switch for detecting the operation of a mechanical mechanism. The signal processing circuit 121 described above,
Strobe circuit 143, nonvolatile memory 144, CPU
145, magnetic head drive circuit 133, film drive circuit 134, shutter drive circuit 136, zoom / focus drive circuit 135, light emitting element drive circuit 139, distance measurement circuit 142
Are connected by a data bus 147 to exchange data. The operation of these drive circuits is controlled by the CPU 145.

FIG. 12 shows the photographing range (angle of view) of the camera of the second embodiment. At this time, the focal length of the photographing lens of the silver halide photographing device is set to the widest side.
(A) shows a state in which the angle of view corresponding to the horizontal direction of the silver halide film is θ ₃ , and the angle of view of the area sensor at this time is α ₃ . In (b), the shooting angle of view corresponding to the vertical direction of the silver halide film is θ ₄ , and the angle of view of the area sensor at this time is α ₄ . In (a) and (b), assuming that the shortest photographing distance of the silver halide photographing device is l _s and a predetermined finite photographing distance is l _x , the photographing distances L = l _S and L =
In l _X, imaging angle of the area sensor α has been configured to encompass θ imaging angle of silver salt photographic system.

FIG. 13 shows a state in which the subject image picked up by the area sensor is displayed on the LCD monitor 123 as an erect image. However, since the range of the subject image photographed by the silver halide photographing device is as shown in FIG. 14, at the photographing distance L = l _S ,
In photographing distance l _X, right and bottom of the screen would not have been captured. That is, similar to the first embodiment,
The image displayed on the LCD monitor 123 is different from the image photographed on the film by the silver halide photographing device. Therefore, as in the first embodiment, mask processing is performed on a range that is not photographed by the silver halide photographing apparatus as shown in FIG.
It is displayed on the CD monitor 123. Alternatively, as shown in FIG. 16, the range photographed by the silver halide photographing device is enlarged and displayed on the LCD monitor.

FIG. 17 is a flowchart showing the camera operation described above. First, when the first release is pressed, a shooting subroutine of step S31 is called from a main routine (not shown). Next, in step S32, focus adjustment is performed. In this focus adjustment, the driving amount of the photographing lens to the in-focus position is calculated based on the output signal of the distance measuring circuit 142, and the photographing lens is driven. next,
In step S33, the luminance of the subject is measured based on the output from the area sensor 124. Based on the measured photometric value and the film sensitivity detected by a film sensitivity detection circuit (not shown), the exposure with the silver halide film is determined. If so, a shutter opening time at which an appropriate exposure can be obtained is calculated (step S34).

Next, an image signal is fetched from the area sensor 124 (step S35). Next, the signal processing circuit 121 performs predetermined signal processing on the fetched image (step S36), and converts the digitalized data into electronic data. After being converted into an image and stored in the video memory 120, it is transferred and stored in the nonvolatile memory 144 (step S37). The electronic image stored in the video memory 120 or the nonvolatile memory 144 is processed (step S38), and the processed electronic image is displayed on the LCD monitor 123 (step S39).

The processing in step S38 is the same as in the first embodiment, and a description thereof will be omitted. Next, in step S40, it is determined whether or not the second release switch has been pressed.
Repeat 40. On the other hand, if the second release switch has been pressed, the flow proceeds to the exposure sequence of the silver halide imaging device and the imaging sequence of the electronic imaging device from step S41. First,
The shutter 129 is controlled so that the shutter opening time calculated in step S34 is reached, and the image of the subject is exposed on the silver halide film, and at the same time, an image signal is taken in from the area sensor 124 (step S41).

Next, the signal processing circuit 121 performs predetermined signal processing on the captured image (step S4).
2) Convert the digital image into an electronic image, store it in the video memory 120, and transfer it to the nonvolatile memory 144.
The storage is performed (step S43). When the exposure and the storage of the electronic image are completed, the film drive circuit 134 winds up the film 131 by one frame (step S44).
Next, in steps S45 and S46, the above step S
The same processing as in steps 38 and 39 is performed.

According to the embodiment of the present invention, the following configuration is obtained. (1) Electronic imaging means having an electronic imaging device for converting a subject image into an image signal, monitor means for displaying a subject image based on an output signal of the electronic imaging means, and exposing the subject image to a silver halide film A photographing optical system having a zoom function for changing a photographing focal length, and a photographing optical system arranged at a predetermined distance from the photographing optical system, An imaging optical system of the electronic imaging means, wherein all imaging screens from the shortest possible imaging distance by the imaging optical system to a predetermined finite imaging distance are included in the imaging screen of the electronic imaging element; and the zoom mechanism Is driven, the subject image based on the output signal of the electronic imaging means is displayed on the monitor means in agreement with the subject image exposed on the silver halide film. Silver photographic and electronic imaging combined camera characterized by comprising, means for processing the output signal of the electronic imaging means.

(2) The processing means according to (1), wherein the processing means performs a masking process on an image pickup range of the electronic image pickup means, except for a screen range photographed by the silver halide photographing means. The camera for both silver halide photography and electronic imaging described in the above. (3) The processing means performs an enlarging process so that a range corresponding to a screen shot by the silver halide shooting means in an imaging range of the electronic imaging means is adjusted to a display area of the monitor means. The camera for both silver halide photography and electronic imaging according to the above (1), which is characterized in that:

(4) << Steps S4 and S634 >> An exposure calculating means for calculating an output signal of the image pickup means to determine an exposure value of the silver halide photographing means is provided. A camera for both silver halide photography and electronic imaging. (5) The camera according to the above (4), further comprising a magnetic recording means for recording at least the exposure value on the silver halide film. (6) The mask processing range is changed according to the photographing focal length and the photographing distance.
2. The camera for both silver halide photography and electronic imaging described in 1. above. (7) The silver halide photography and electronic imaging camera according to (3), wherein the magnification of the enlargement processing is changed according to the photography focal length and the photography distance.

[0053]

According to the present invention, in a dual-purpose camera having both functions of an electronic image pickup device and a silver halide photographing device, it is possible to match an image displayed by the former monitor means with a latent image exposed on the latter film. It is an object of the present invention. In the first aspect, the imaging optical system of the electronic imaging unit is configured so that all imaging screens from the shortest imaging distance to a predetermined finite imaging distance in the silver halide imaging unit are included in the screen range of the electronic imaging device. According to a second aspect of the present invention, a part of the imaging range of the electronic imaging means, which is outside a screen range photographed by the silver halide photographing means, is subjected to mask processing and displayed on the monitor.

According to a third aspect of the present invention, of the photographing range of the electronic photographing means, a range corresponding to a screen to be photographed by the silver halide photographing means is subjected to enlargement processing so as to match a display area of the monitor and displayed. . By performing the configuration and display processing in this manner, it is possible for the image displayed on the monitor by the electronic imaging device to coincide with the latent image exposed on the film, and the operator can confirm the intention by confirming the electronic image. It can be reliably determined at the time of shooting whether or not shooting is possible.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a perspective view of a single-lens reflex camera showing an embodiment of the present invention. (A) is a front view, (b) is a rear view.

FIG. 3 is a block diagram of a system showing a first embodiment of the present invention.

FIG. 4 is a photographing range (angle of view) of the camera according to the first embodiment of the present invention. (A) shows the shooting angle of view of the silver halide film and the image sensing angle of view of the area sensor, which correspond to the horizontal direction and (b), respectively.

FIG. 5 is a subject image photographed by the silver halide photographing apparatus according to the first embodiment of the present invention. (A) is the image at the shortest shooting distance, and (b) is the image at the finite shooting distance.

FIG. 6 shows an image displayed on an LCD monitor as an erect image of a subject image picked up by an area sensor according to the first embodiment of the present invention. It is a subject image. (A) is the image of the shortest shooting distance,
(B) is an image at a finite shooting distance.

FIG. 7 is an LCD monitor image on which a mask process has been performed according to the first embodiment of the present invention. (A) is the image at the shortest shooting distance, and (b) is the image at the finite shooting distance.

FIG. 8 is an LCD monitor image that has undergone enlargement processing according to the first embodiment of the present invention. (A) is the image at the shortest shooting distance, and (b) is the image at the finite shooting distance.

FIG. 9 is a flowchart of a camera operation according to the first embodiment of the present invention.

FIG. 10 is a perspective view of a lens shutter camera showing an embodiment of the present invention. (A) is a front view, (b) is a rear view.

FIG. 11 is a block diagram of a system showing a second embodiment of the present invention.

FIG. 12 is a photographing range (angle of view) of a camera according to the second embodiment of the present invention. (A) shows the shooting angle of view of the silver halide film and the image sensing angle of view of the area sensor, which correspond to the horizontal direction and (b), respectively.

FIG. 13 is a subject image photographed by the silver halide photographing apparatus according to the second embodiment of the present invention. (A) is the image at the shortest shooting distance, and (b) is the image at the finite shooting distance.

FIG. 14 is a view showing an image displayed on an LCD monitor as an erect image using a subject image captured by an area sensor according to a second embodiment of the present invention, and a portion surrounded by a dotted line is captured by a silver halide imaging device. It is a subject image. (A) is the image of the shortest shooting distance,
(B) is an image at a finite shooting distance.

FIG. 15 is an LCD monitor image on which mask processing has been performed, according to the second embodiment of the present invention. (A) is the shortest shooting distance, and (b) is a finite shooting distance.

FIG. 16 is an LCD monitor image on which an enlargement process has been performed according to the second embodiment of the present invention. (A) is the shortest shooting distance,
(B) is a finite photographing distance.

FIG. 17 is a flowchart of a camera operation according to the second embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 monitor 2 memory 3 electronic imaging device 4 image mask enlargement means 5 silver halide photographing device 6 film recording device 7 subject image input to electronic imaging device (image input) 8 subject image input to silver halide film (image input) 9 control apparatus

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoji Watanabe 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd.

Claims (3)

[Claims] 1. An electronic image pickup means having an electronic image pickup device for converting a subject image into an image signal, a monitor means for displaying a subject image based on an output signal of the electronic image pickup means, and a silver halide film for converting the subject image A silver halide photographing means for exposing the electronic photographing means, wherein a photographing optical system of the silver halide photographing means and a photographing optical system of the electronic photographing means are arranged at a predetermined distance interval, and the photographing optical system of the electronic photographing means is A silver halide photographing and electronic photographing device, wherein all photographing screens from the shortest photographable distance to a predetermined finite photographing distance in the silver halide photographing means are included in the photographing screen of the electronic image sensor. An imaging camera. 2. The image processing apparatus according to claim 1, wherein, of the imaging range of said electronic imaging means, a screen area other than a screen area photographed by said silver halide photographing means is subjected to mask processing and displayed on said monitor means. Camera for both silver halide photography and electronic imaging. 3. A range corresponding to a screen imaged by the silver halide photographing means in the imaging range of the electronic imaging means is subjected to an enlargement process so as to match a display area of the monitor means and displayed on the monitor means. The camera for both silver halide photography and electronic imaging according to claim 1, wherein: