JPH09311378A - Camera used for both of silver halide picture and still picture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact camera used for both of a silver salt picture and a still picture, capable of easily confirming an image to be photographed and a photographed image in operation of photographing and also after photographing. SOLUTION: As for the main body 1 of the camera used for both of a silver salt picture and a still picture, an optical system 2 as an exposure means for exposing an object image on the silver salt film, and an optical system 3 as an image signal recording means for forming an image corresponding to the object image on a solid-state image pickup element and recording an image signal outputted from the solid state image pickup element are separately constituted, and a lens 2a constituting the optical system 2 and a lens 3a constituting the optical system 3 are laid out in the upper and lower parts of the camera main body 1. A monitor for displaying the image based on the image signal is installed in the camera main body 1, besides, the camera is provided with an image signal processing means for processing the image signal in accordance with the distance of the object image so that the image area displayed on the monitor may become equal to the object image exposed on the silver salt film.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silver salt / still photography camera.

[0002]

2. Description of the Related Art Conventionally, many cameras (hereinafter referred to as silver salt cameras) configured to expose a subject image on a silver salt film are known. However, although this silver salt camera has the advantage that high-quality prints can be obtained, it is not possible to confirm the image taken until it becomes a print, and it is necessary to order after checking the printed or developed print. It was inconvenient. Further, it has a drawback that it is difficult to correct the image after photographing.

Further, a still camera constructed so that an image corresponding to a subject image is formed on a CCD solid-state image pickup device and the obtained image signal is recorded on a recording medium is becoming popular. This still camera is superior to the silver-salt camera in that the image signal can be processed by a personal computer after shooting, but it is not possible to view the shot image on the spot. It had the same drawbacks as those of (1) and (2) and was inferior to the silver halide camera in terms of image quality.

Therefore, in recent years, a silver salt / still photography dual-purpose camera having the advantages of a silver salt camera and a still camera has been developed. According to this dual-purpose camera for silver-salt / still photography, it is possible to make a silver-salt photograph with good image quality or a still photograph in which the processing of the image signal after shooting is easy, depending on the purpose of shooting. It has the advantage that it can be used in a wider range than the single-use silver halide cameras and still cameras. Regarding this type of camera, for example, Japanese Patent Laid-Open No. 5-1
A silver salt / still photography dual-purpose camera described in Japanese Patent No. 13599 is known.

[0005]

The camera described in this publication is designed to form a subject image on the CCD solid-state image pickup device by light dispersed by a single-lens reflex finder optical system. In addition to an optical system for salt photography and an optical system for still photography, a viewfinder optical system is provided, so that there is a drawback that the camera becomes large. Further, according to this camera, since the light dispersed from the finder optical system is formed as a subject image on the CCD solid-state image sensor, the optical path length from the subject to the CCD solid-state image sensor is long and many Since the image is formed on the CCD solid-state image sensor through the optical element of
There was a problem of poor contrast. Further, it has the same drawbacks as the silver halide camera and the still camera in that the photographed image cannot be viewed on the spot.

An object of the present invention is to take a silver halide photograph and a still photograph that is clearer than conventional ones, and moreover, to easily confirm the image to be photographed or the photographed image during or after photographing. It is to provide a compact silver salt / still photo dual-purpose camera that can be used.

[0007]

According to a first aspect of the present invention, there is provided a silver salt / still photography dual-purpose camera for displaying a subject image on a silver salt film.
And an image for recording an image signal output from the solid-state imaging device by forming an image corresponding to the subject image on the solid-state imaging device through the second optical system. A silver salt / still photography camera having signal recording means, wherein the first optical system and the second optical system are separately configured, and a lens configuring the first optical system, and A lens forming a second optical system is laid out above and below the camera body, and a monitor for displaying an image based on the image signal is provided on the camera body, and the camera body is further provided. Is provided with image signal processing means for processing the image signal according to the distance from the subject image so that the image range displayed on the monitor is the same as the subject image exposed on the silver salt film. And said that you are.

According to the camera of the first aspect, since a monitor that displays the same image as the subject image exposed on the silver salt film can be used as a finder, it is not necessary to separately provide a finder optical system. To that extent, the optical system becomes simple.

In addition, the subject image formed on the solid-state image pickup device is formed not by the light dispersed by the single-lens reflex optical system but by the light directly incident on the optical system of the image signal recording means. , A clearer image can be displayed on the monitor.

In this camera, since the optical system of the image signal recording means functioning as the finder optical system and the optical system of the exposing means are separately provided, para correction is required, but the image is displayed on the monitor. Since the image signal is processed according to the distance to the subject so that the image range to be formed is the same as the subject image exposed on the silver salt film, it is possible to easily perform para-correction, When taking a silver salt photograph, it is easy to set the composition while checking the image displayed on the monitor as a viewfinder image.After shooting, the image of the subject exposed on the silver salt film is taken. The corresponding image can be called to check framing mistakes and the like.

Further, in the silver salt / still photography camera according to claim 2, the image signal recording means selectively selects the same image as an arbitrary subject image exposed on the silver salt film after taking out the silver salt film. In addition, it has a backup memory function so that it can be displayed on the monitor.

With this, it is possible to accurately know the image taken on the film after taking out the film, and it is possible to prevent the mistake of shooting the same subject, and it is clear from where to shoot when shooting a continuous object. become.

According to a third aspect of the present invention, there is provided a silver salt / still photography camera for displaying photographing information in addition to a photographed image on a monitor provided on a rear surface of the camera.

As a result, various modes at the time of shooting, the number of frames, the date, etc. can be displayed, and the liquid crystal monitor can be effectively used.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a silver salt / still photography camera according to the present invention will be described below with reference to FIGS.

First, the configuration will be described.

FIG. 1 is a front view of a dual-purpose camera according to an embodiment of the present invention. 2 is a rear view, FIG. 3 is a top view, FIG. 4 is a right side view, and FIG. 5 is a vertical sectional view as seen from the right side. FIG. 6 is a schematic diagram showing the image-capable range of the dual-purpose camera.

As shown in FIGS. 1 and 5, in this dual-purpose camera, a camera body 1 is provided with an optical system 2 for taking a silver salt photograph, and immediately below this optical system 2 is a still photograph taking apparatus. Another optical system 3 is provided. That is, in this dual-use camera, the optical system 2 and the optical system 3 are separately configured, the lens 2a forming the optical system 2 is arranged in front of the film 4, and the lens 3a forming the optical system 3 is formed in the film. It is arranged in front of a solid-state image pickup element (for example, CCD solid-state image pickup element) 5 arranged below 4.

Further, in this dual-purpose camera, as shown in FIG. 6, regardless of the distance of the subject, the still photographable range is always wider than the silver salt photographable range. There is. Further, although the optical system 3 is provided immediately below the optical system 2 in FIG.
The optical system 3 may be provided on.

FIG. 2 is a rear view of the dual-purpose camera, which has a liquid crystal monitor 6 for displaying an image. The aspect ratio of the light-accepting range of liquid crystal and CCD solid-state imaging devices currently on the market is 3: 4. However, in the case of the camera according to the present invention, the film screen size of silver halide photography (aspect ratio 9: 1) is displayed on the liquid crystal monitor.
Since the same range as in 6) is displayed, the upper and lower areas are vacant. Therefore, in the present invention, these areas are effectively utilized, and at the time of shooting, the shooting conditions such as mode, frame number, date display, flash under the screen (AUTO,
(SLOW, forced light emission, light emission stop, self, red-eye prevention, etc.)
Is displayed.

On the right side of the liquid crystal monitor, the solid-state image sensor 5
Various functions related to display operation, such as a function switch 7 for switching between an image displayed in real time via the screen and an image based on recorded data, and a zoom button 8 for controlling the close-up function of the image displayed on the LCD monitor on the left side. Is provided. Further, there is provided a PAR switching lever 9 for switching the photographing range of the silver halide camera to a high definition size (H), a panoramic size (P) or a classical size (C).

FIG. 3 is a top view of the dual-purpose camera. The dual-purpose camera according to the present invention has a silver-salt photography mode for performing silver-salt photography together with still photography means, and a still-photography mode for only still photography. Therefore, the camera mode switch 10 for switching them is provided. Further, a date set button 11, a date select button 12, a date mode button 13 for operating the date setting, a manual U-turn button 14 for rewinding a silver halide film during shooting, a self-timer 15, and a flash operation button 16 are provided respectively. ing.

FIG. 4 is a right side view of the dual-purpose camera. A digital input / output terminal 17 for personal computer processing of images and a video output terminal 18 for video-out of images are provided. Furthermore, since it has the external power supply terminal 19,
You can use both the battery inside the camera and the external power supply using the AC adapter.

With the above construction, the dual-use camera of the present invention can use the optical system for taking still pictures as the finder optical system, so that the optical system is simpler than the conventional dual-use camera and is compact and compact. Become a camera.

In addition, if the above-mentioned optical system is configured, the subject light of the image on the still photograph side is not the light split from the optical system of the single-lens reflex camera but the light that is directly incident, A clearer image can be obtained.

Next, the operation will be described.

FIG. 7 is a block diagram of the internal circuit of the camera according to the present invention, and FIG. 8 is a display example of the liquid crystal monitor 6 provided on the back surface of the camera body 1, in which the main switch 20 of the camera body 1 is shown. When turned on, the image of the subject light that has passed through the lens 3a of the optical system 3 is displayed as it is.

First, the silver salt photography mode in which silver salt photography is carried out in combination with still photography means will be described.

After the dual-use camera of the present invention is loaded with the silver salt film, the camera is aimed at the target image of the subject and the release button 21 is pressed halfway. Distance measurement to the subject by pressing the release button 21 halfway (infrared active method)
Is performed (FIG. 1 shows the light emitting window / light receiving window 1a),
Based on the result of the distance measurement, a part of the lens 2a of the optical system 2 operates to focus on the silver halide photograph side.

In the ROM which contacts the CPU in advance,
From the optical characteristics of the lens 2a and the lens 3a, data is input so that the image formed by the subject light that has entered from the optical system 3 is in the same range as the subject image filmed, depending on the distance to the subject. Therefore, the data of the distance measurement signal is C
When entering the PU, the image trimming circuit automatically determines that the image passing through the lens 3 is in the same range as the image projected on the film (portion a in FIG. 6).

The decided image is displayed on the liquid crystal monitor 6 through the image synthesizing circuit and superimposing.

As described above, since the image range displayed on the liquid crystal monitor 6 is the same range as the subject image photographed on the film, it can be used as a finder. Unlike conventional silver-halide photography cameras, you can set and check composition without having to bring your eyes close to the viewfinder.

When the shutter is released, the film is photographed, but after the photographing, image data corresponding to the image photographed on the film is recorded in the recording section 1 by the flash memory function. Frame designation + button 22 and frame designation-button 2
By operating 3 you can call up the image recorded after shooting and check it on the liquid crystal monitor 6 at any time, so you do not forget to take a picture and you can check on the spot even shooting mistakes such as framing mistakes due to camera shake You can The memory capacity is 80 frames, and it is normally held until one film (40 frames) has been taken and a new film is inserted. Therefore, it is possible to confirm what is reflected on the film in the camera which has not been used for a while.

Further, as shown in FIG. 8, when the subject image is monitored as a finder and immediately after photographing, the display on the display is a single frame display. However, the image once recorded can be operated by operating the mode button 24. It can be displayed on a multi-split multi screen. It is possible to display images in 4-split and 9-split screens, and it is possible to take out an arbitrary recorded image, display it, and use it for image comparison or the like.

The image displayed on the liquid crystal monitor is
Whether the image is a real-time image or an image based on recorded data, the zoom button 8 of the camera body 1
By pressing, you can see the details in close-up.

Furthermore, when the film is replaced, if a desired memory is recorded in advance in a backup memory function having a capacity of 40 frames, it is possible to record even after the film is taken out. In single frame display, press the display button 25 to display [M
When the [EM] mark is displayed and the protect button 26 is pressed, the same image as the subject image in an arbitrary frame of the silver halide film is recorded in the backup memory (recording unit 2). If the number of recorded frames is less than 40, it is possible to record in the backup memory by repeating the same operation when replacing the next film, and as a result, it corresponds to several silver salt films. It is possible to pick up and record only the necessary image signal from the image signals. With this, later,
You will be able to see exactly what you have taken before, avoiding the mistake of shooting the same subject, and where in the case of continuous shooting you should know where to start. Further, if it becomes unnecessary, the recorded data image can be erased by operating the delete button 27.

After the photographing, the print selection and the number of additional prints can be written on the silver salt film while confirming the photographed image. When the number of prints designation button 28 is operated after the last frame is photographed, the same digital images as the film images in the camera are displayed on the liquid crystal screen one after another, and the desired number of prints can be entered in the designated number of prints at the lower left of the liquid crystal screen. You can When all the information is entered, rewinding is automatically started and the information is magnetically written in the margin of the film. As a result, the work of deciding the frames to be printed or reprinted by looking at the negative film or the like after the normal development becomes unnecessary, and the convenience for the user is enhanced.

When the designation of the number of prints is not selected,
It is rewound as it is.

When photographing with a silver salt film is not required, the camera mode switch 10 is switched to function only as a still picture camera. When used as a still photo camera, the image quality switch 29 can be operated to switch the image quality between economy, normal and high resolution.

In the case of taking a still picture, the image is displayed on the liquid crystal and recorded in the backup memory.

In both the silver salt photography mode and the still photography mode, the data recorded in the memory (flash memory, backup memory) is the video output terminal 1
If 8 is connected to a video, it can be taken out as a video image, and if it is connected to a digital output terminal 17 and input to a personal computer, it can be combined / edited with other images or sentences. And these images and images can be printed out at any time by using the attached printer.

[0042]

According to the first aspect of the present invention, since a monitor that displays the same image as the subject image exposed on the silver salt film can be used as a finder, it is not necessary to separately provide a finder optical system. By that amount, the optical system becomes simple.

In addition, the subject image formed on the solid-state image sensor is not formed by the light dispersed from the single-lens reflex optical system, but is formed by the light directly incident on the optical system of the image signal recording means. , A clearer image can be displayed on the monitor.

Since this camera is separately provided with an optical system for image signal recording means functioning as a finder optical system and an optical system for silver halide photography, para-correction is required, but a monitor is required. Since the image signal is processed according to the distance to the subject so that the displayed image range is the same as the subject image exposed on the silver salt film, the para-correction can be easily performed. , It is easy to set the composition while checking the image displayed on the monitor as a viewfinder image before taking a silver salt photograph, and after shooting, the subject image exposed on the silver salt film shot. It is possible to call an image corresponding to and confirm a framing mistake or the like.

According to the second aspect of the invention, it is possible to accurately know the image taken on the film after taking out the film, prevent mistakes of shooting the same subject, and in the case of shooting continuous objects. It will be clear where to start shooting.

According to the third aspect of the present invention, various modes, the number of frames, the date, etc. at the time of shooting can be displayed, and the liquid crystal monitor can be effectively used.

[Brief description of drawings]

FIG. 1 is a front view of a camera body as an example to which the present invention is applied.

FIG. 2 is a rear view of a camera body as an example to which the present invention is applied.

FIG. 3 is a top view of a camera body as an example to which the present invention is applied.

FIG. 4 is a right side view of a camera body as an example to which the present invention is applied.

FIG. 5 is a vertical sectional view of a camera body as an example to which the present invention is applied.

FIG. 6 is a diagram showing a shooting range of the dual-purpose camera of the present invention.

FIG. 7 is a block diagram of an internal circuit of the dual-purpose camera of the present invention.

FIG. 8 is a display example of a liquid crystal monitor on the rear surface of the camera body 1.

[Explanation of symbols]

 1 Camera Main Body 2 Silver Salt Photographing Optical System 3 Still Photographing Optical System 4 Silver Salt Film 5 Solid State Image Sensor 6 Liquid Crystal Monitor 21 Release Button

Claims (3)

[Claims] 1. An exposure unit that exposes a subject image on a silver salt film through a first optical system, and an image corresponding to the subject image is formed on a solid-state image sensor through a second optical system. A silver salt / still photography camera having image signal recording means for recording an image signal output from the solid-state imaging device, wherein the first optical system and the second optical system are separately configured. , A lens forming the first optical system and a lens forming the second optical system are laid out above and below the camera body, and an image based on the image signal is displayed on the camera body. A monitor for displaying is provided, and the camera body is adjusted according to the distance to the subject image so that the image range displayed on the monitor is the same as the subject image exposed on the silver salt film. The picture A silver salt / still photography dual-purpose camera characterized by being provided with image signal processing means for processing image signals. 2. A backup so that the image signal recording means can selectively display the same image as an arbitrary subject image exposed on the silver salt film on the monitor after taking out the silver salt film. The silver salt / still photography camera according to claim 1, which has a memory function. 3. The photographing information is displayed on the monitor in addition to the photographed image.
The camera for both silver salt and still photographs described.