JPH05113599A - Camera both for silver-salt photograph and electronic still photograph - Google Patents

Abstract

PURPOSE:To provide a camera used both for silver-salt photograph and an electronic still photograph by which one of the silver-salt photograph and the electronic still photograph can be photographed even when the other cannot be photographed. CONSTITUTION:This camera is provided with a selection means 102 which selects one among a simultaneous photographing mode for obtaining the silver- salt photograph and the electronic still photograph, a silver-salt photograph photographing mode and an electronic still photograph photographing mode, a first detection means 103 which detects whether the silver-salt photograph can be obtained or not by a film exposure means 100 and a switching means 104 which automatically switches a mode to the electronic still photograph photographing mode in the case that it is detected by the detection means 103 that the silver-salt photograph cannot be obtained when the simultaneous photographing mode is selected. Then, the photographing is executed in the electronic still photograph photographing mode without missing a shutter chance even under the state that the silver-salt photograph cannot be photographed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera capable of taking both electronic still photographs and silver salt photographs.

[0002]

2. Description of the Related Art A camera capable of taking both electronic still photographs (hereinafter referred to as SV) and silver salt photographs (hereinafter referred to as AG) is known. In this type of camera, image data of a subject image is recorded on a magnetic recording medium such as a floppy disk, and the subject image is exposed on a silver salt film.

Normally, in the AG / SV simultaneous photographing mode of this type of camera, when one of the cameras becomes incapable of photographing, an error or the like may occur if the photographing is continued as it is. I have to. Furthermore, while shooting in one of the shooting modes, operation of the other mode is prohibited.

[0004]

However, the conventional silver salt photography and electronic still photography cameras described above have the following problems.

Since the release is prohibited during a time when AG photographing is impossible or in a situation where AG photographing is impossible, even if there is a shutter chance at that time, SV photographing is possible, but a shutter chance. Miss out on. Here, there are the following cases in the time when AG photographing is impossible or the situation where AG photographing is impossible. (1) During the winding period of the AG film including the shutter charging time (usually several tens of ms to several hundreds of meters)
s). (2) After shooting the AG film. (3) The film is being rewound into the cartridge after the AG film is taken. (4) Replacing the AG film. (5) At the time of idling the film after loading the AG film (after loading the film, the film is fed until the first shooting frame is set to a predetermined shooting position). (6) When the shooting conditions exceed the shooting range of the loaded AG film. In this case, since AG photographs are overexposed or underexposed, release is normally prohibited, but the SV image sensor always has the same sensitivity, and SV photography is possible even in situations where AG photography is not possible. There is a case. (7) When the AG / SV dual-use camera uses different power supplies for each AG / SV and the power supply voltage of the AG camera unit drops, or when the common power supply is used, the AG camera unit When the operating limit voltage is high and the AG camera section becomes inoperable due to the voltage drop.

[0006] In the time when SV shooting is impossible or in the situation where SV shooting is not possible, the release is prohibited. Therefore, even if there is a shutter chance at that time, even though AG shooting is possible, a shutter chance is available. Miss out on. Here, there are the following cases in the time when the SV photographing is impossible or the situation where the SV photographing is impossible. (8) When replacing a floppy disk for SV recording. (9) When the SV recording floppy does not have a recordable capacity and the AG film has unrecorded frames. (10) In SV imaging of a method of recording image data on a magnetic recording medium, when the magnetic head cannot record due to dew condensation. (11) When the AG / SV dual-use camera uses different power supplies for each AG / SV and the power supply voltage of the SV camera unit drops, or the common power supply is used, the SV
When the operating limit voltage of the camera unit is higher and the SV camera unit becomes inoperable due to the voltage drop.

An object of the present invention is to provide a silver salt photograph and an electronic still photograph which cannot be photographed.
On the other hand, it is to provide a camera for both silver halide photography and electronic still photography that enables photography.

[0008]

The present invention will be described with reference to FIG. 1, which is a claim correspondence diagram, and the invention of claim 1 is a film exposing means 100 for exposing a subject image on a silver salt film, and a recording medium. It is applied to a camera for both silver halide photography and electronic still photography, which is equipped with an electronic image recording means 101 for recording electronic image data corresponding to a subject image. Then, the film exposure means 100 and the electronic image recording means 10
1 and 2 are operated simultaneously to obtain a silver salt photograph and an electronic still photograph, and a film exposure means 100 is activated to obtain a silver salt photograph photographing mode and an electronic image recording means 101. A selection unit 102 that operates to select one of the electronic still photography modes for obtaining an electronic still photograph, and a first detection unit that detects whether or not a silver salt photograph can be obtained by the film exposure unit 100. When the first detecting means 103 detects that it is impossible to obtain a silver halide photograph when the simultaneous photographing mode is selected by 103 and the selecting means 102, the electronic still photography mode is automatically set. And a switching means 104 for selectively switching, thereby achieving the above object. According to a second aspect of the present invention, the silver salt photograph and electronic still photograph dual-use camera according to the first aspect is detected to be incapable of obtaining a silver salt photograph in the simultaneous photographing mode, and the electronic still photograph photographing mode is set. When switched, the recording medium 105 is provided with a recording unit 105 that records information indicating that the image is not captured in the simultaneous capturing mode on the recording medium. The switching means 104A of the camera for both silver salt photography and electronic still photography according to claim 3 detects that it is not possible to obtain a silver halide photography in the simultaneous photography mode, and when switching to the electronic still photography mode. First, it is possible to obtain silver salt photographs
When it is detected by the detection means 103, the automatic switching to the simultaneous photographing mode is performed again. According to a fourth aspect of the present invention, a film exposing means 10 for exposing a subject image on a silver film.
0 and an electronic image recording means 101 for recording electronic image data corresponding to a subject image on a recording medium. And
Simultaneous shooting mode for operating both the film exposing means 100 and the electronic image recording means 101 to obtain a silver salt photograph and an electronic still photograph, and operating the film exposing means 100 to obtain a silver salt photograph. The electronic image recording means 1 and the selection means 102 for operating the photographing mode and the electronic image recording means 101 to select one of the electronic still picture photographing modes for obtaining an electronic still picture.
When the simultaneous photographing mode is selected by the second detecting means 106 for detecting whether the electronic still picture can be obtained by 01 and the selecting means 102, it is impossible to obtain the electronic still picture. The switching means 104B automatically switches to the silver salt photography mode when detected by the second detecting means 106, thereby achieving the above object. According to a fifth aspect of the present invention, the silver salt photography and electronic still photography dual-use camera according to the fourth aspect of the present invention detects that it is impossible to obtain an electronic still photography in the simultaneous photography mode, and switches to the silver salt photography photography mode. When switched, the recording means 105A is provided for recording information indicating that the film is not taken in the simultaneous shooting mode on the silver halide film. Switching means 104C for a camera for both silver halide photography and electronic still photography according to claim 6
It is detected that it is impossible to obtain an electronic still picture in the simultaneous photography mode, and it is possible to obtain the electronic still picture while switching to the silver salt photography photography mode. When detected by means 106,
The camera automatically switches to the simultaneous shooting mode again. According to a seventh aspect of the present invention, a silver salt photograph and an electronic device including a film exposure unit 100 for exposing a subject image on a silver salt film and an electronic image recording unit 101 for recording electronic image data corresponding to the subject image on a recording medium. Applies to still photo dual-purpose camera. Then, the film exposure means 100 and the electronic image recording means 101 are operated together to obtain a silver salt picture and an electronic still picture at the same time, and the film exposure means 100 is operated to obtain a silver salt picture. A silver salt photograph is obtained by means of a film exposing means 100 and a selecting means 102 for selecting one of the electronic still photography modes for obtaining an electronic still picture by operating the salt photography mode and the electronic image recording means 101. When the silver salt photography mode is selected by the first detecting means 103 and the selecting means 102, it is impossible to obtain a silver salt photograph. And a switching means 104D for automatically switching to the electronic still photography mode when detected by
To achieve the above objectives. According to the invention of claim 8, in the camera for dual-use silver salt photography and electronic still photography according to claim 7, it is detected that it is impossible to obtain a silver salt photograph in the silver salt photography mode, and the electronic still photography mode is entered. When switched, the recording means 105B for recording that the photographing mode has been switched is provided on the recording medium. The switching means 104E of the camera for both silver halide photography and electronic still photography according to claim 9,
The first detection is that it is impossible to obtain a silver salt photograph in the silver salt photography mode, and it is possible to obtain the silver salt photograph when switching to the electronic still photography mode. When it is detected by the means 103, it automatically switches to the silver salt photography mode again. Claim 1
The invention of No. 0 is a silver salt photograph and an electronic still photograph provided with film exposure means 100 for exposing a subject image on a silver salt film and electronic image recording means 101 for recording electronic image data corresponding to the subject image on a recording medium. Applies to dual-purpose cameras. Then, the film exposure means 100 and the electronic image recording means 101 are operated together to obtain a silver salt picture and an electronic still picture at the same time, and the film exposure means 100 is operated to obtain a silver salt picture. Selection means 102 for selecting one of the electronic still picture photographing modes for obtaining an electronic still picture by operating the salt photograph photographing mode and the electronic image recording means 101, and the electronic image recording means 101 for photographing the electronic still picture. Second detecting means 106 for detecting whether or not to obtain, and selecting means 10
When the electronic still photography cannot be obtained by the second detecting means 106 while the electronic still photography mode is selected in 2, the mode is automatically switched to the silver salt photography mode. The switching means 104F is provided to achieve the above object. According to an eleventh aspect of the present invention, the silver salt photography and electronic still photography dual-use camera of the tenth aspect is switched to the silver salt photography photography mode when it is detected that the electronic still photography cannot be obtained in the electronic still photography mode. Then, the recording means 105C for recording the switching of the photographing mode is provided on the silver salt film. When the switching means 104G of the camera for both silver salt photography and electronic still photography according to claim 12 is detected to be unable to obtain an electronic still photography in the electronic still photography mode, and is switched to the silver salt photography photography mode. Secondly, when it is detected by the second detection means 106 that it is possible to obtain an electronic still photograph, the electronic still photography mode is automatically switched again. The invention of claim 13 is
The silver salt photography and electronic still photography dual-purpose cameras according to any one of claims 1 to 12 indicate differently whether a silver salt photography and an electronic still photography are possible or not possible. The display means 107 for displaying in a form is provided. According to a fourteenth aspect of the present invention, when the simultaneous photographing mode is selected by the selecting means 102 in the silver salt photographic and electronic still photographic dual-purpose camera according to any one of the first to sixth aspects, the silver salt is selected. A display unit 107A is provided to display that photography or electronic still photography cannot be performed and only one of them can be photographed.

[0009]

In the first aspect, the switching means 104 is the selecting means 1
It is impossible to obtain a silver halide photograph when the simultaneous photographing mode is selected in 02.
When detected by 3, automatically switches to the electronic still photography mode. In claim 2, the recording means 105,
When it is detected that it is not possible to obtain a silver halide photograph in the simultaneous photographing mode and the mode is switched to the electronic still photograph photographing mode, information indicating that the photographing is not performed in the simultaneous photographing mode is recorded on the recording medium. In claim 3, the switching means 104
It is detected that it is impossible for A to obtain a silver salt photograph in the simultaneous photographing mode, and it is possible to obtain a silver salt photograph while switching to the electronic still photography mode. When it is detected by the detection means 103, it automatically switches to the simultaneous photographing mode again. In claim 4, when the switching unit 104B detects that the electronic still photograph cannot be obtained by the second detecting unit 106 when the simultaneous photographing mode is selected by the selecting unit 102, Automatically switch to silver salt photography mode. In claim 5, when the recording unit 105A is switched to the silver salt photography mode when it is detected that the electronic still photograph cannot be obtained in the simultaneous photography mode, the silver salt film is not photographed in the simultaneous photography mode. Record information to the effect. In claim 6, the switching means 104C detects that it is impossible to obtain the electronic still photograph in the simultaneous photographing mode, and can obtain the electronic still photograph while switching to the silver salt photograph photographing mode. When it is detected by the second detection means 106, the mode is automatically switched to the simultaneous photographing mode again. In claim 7, the first detecting means 103 detects that the switching means 104D cannot obtain a silver salt photograph when the silver salt photography mode is selected by the selecting means 102. Then, it automatically switches to the electronic still photography mode. In claim 8, when the recording means 105B is switched to the electronic still picture photographing mode when it is detected that the silver salt picture cannot be obtained in the silver salt picture photographing mode, the photographing mode is switched to the recording medium. Record that. In claim 9, the switching means 104E detects that it is impossible to obtain the silver salt photograph in the silver salt photography mode, and obtains the silver salt photograph while switching to the electronic still photography mode. If it is detected by the first detection means 103, the mode automatically switches to the silver salt photography mode again. In claim 10, the switching means 104F detects that the electronic still picture cannot be obtained by the second detecting means 106 when the electronic still picture taking mode is selected by the selecting means 102. Then, it automatically switches to the silver salt photography mode. In the eleventh aspect, when the recording unit 105C is switched to the silver salt photography mode by detecting that the electronic still photography cannot be obtained in the electronic still photography mode, the photography mode is switched to the silver salt film. Record that. In claim 12, the switching means 104G is
Second detecting means detects that it is impossible to obtain an electronic still photograph in the electronic still photography mode, and can obtain the electronic still photograph while switching to the silver salt photography photography mode. When it is detected by 106, the electronic still photography mode is automatically switched again. According to the thirteenth aspect, the display means 107 displays the photographable state and the non-photographable state of silver salt photography and electronic still photography in different display modes. In claim 14, the display means 107A indicates that when the simultaneous photographing mode is selected by the selecting means 102, silver salt photography or electronic still photography cannot be performed, and only one of them can be photographed. To do.

[0010]

FIG. 2 shows the construction of an embodiment, and FIG. 3 shows the outline of the optical system of a camera. First, referring to FIG.
Is a microcomputer (hereinafter, referred to as CPU) that performs SV shooting sequence control and the like, and CPU 2 is a CPU that performs AG shooting sequence control and the like. DRV1
Is a driver circuit that drives a CCD for SV shooting, D
RV2 is a driver circuit that drives the in-viewfinder display element and the external display element, and DRV3 is a magnet (hereinafter abbreviated as Mg) that drives a shutter and an aperture, and A
A driver circuit for driving a motor (hereinafter abbreviated as M) for feeding G film and charging a shutter, DRV
A driver circuit 4 drives an imprinting device (not shown) that optically imprints information on the AG film. INT
Reference numeral 1 denotes an interface circuit (including a magnetic head in the case of magnetic recording) that stores a video signal from the CCD in a storage medium during SV shooting, and INT 2 receives a selection signal for AG / SV shooting and switches the release signal. The interface circuit, INT3, for performing is an interface circuit for transmitting the display signals from the CPUs 1 and 2 to the DRV 2.

The CCD is an image pickup device for SV photography,
SPD is a light receiving element for photometry, MEM1 is a recording medium for SV photographing such as floppy or IC card, and DISP is
In the viewfinder such as LCD and LED, and external display element, OP1 is the CPU for the photometric information from the light receiving element SPD.
2, SEL1 is an operation member for setting the AG shooting mode, the SV shooting mode and the AG / SV simultaneous shooting mode, and the SW is the setting state of the AG film (the presence or absence of the film cartridge, the DX code, etc.), ,
A state determination switch that indicates the current state of the shutter, aperture, and motor. In addition, R. SW is a release switch that interlocks with a shutter release button (not shown), TG
1 and TG2 are release switches R. It is a switching element such as a transmission gate that switches the transmission of SW.

In FIG. 3, 1 is a taking lens, 2 is a half mirror, 3 is an AG film, 4 is the above-mentioned CC.
D, 5 are splitters, 6 is a penta prism, 7 is a screen, 8 is a light receiving element (SPD), and 9 is a sub-mirror.

Next, the operation will be described. In the apparatus of this embodiment, dedicated CPUs 1 and 2 are used to control the photographing operations of AG and SV, respectively, and the recording operation is started by the common release switch R. Perform with SW. Release switch R. The state of SW is C depending on TG1 and TG2.
It is transmitted to PU1 and CPU2. When both TG1 and TG2 are on, both CPU1 and CPU2 start the recording operation, and when only one of them is on, only the on-side CPU starts the recording operation. Switching element T
When both G1 and TG2 are off, the release prohibition state (recording is impossible for both AG and SV).

A part of the light flux from the subject that has passed through the lens 1 passes through the half mirror 2 and a part of it passes through the sub-mirror 9.
Is guided to the light receiving element 8, and the other part is guided to the film 3 surface and forms an image on the film 3 surface. A part of the light flux from the subject reflected by the half mirror 2 forms an image on the screen 7. The image becomes an erect image by the pentaprism 6. Further, the image is split by the splitter 5, a part of which is guided to the CCD 4 and is formed on the CCD 4.
The amount of light incident on the light receiving element 8 is converted into an electric signal, amplified by the photometric amplifier circuit OP1, and output to the CPU 2 as luminance information of the subject.

After the power is turned on, when the switching element TG1 is in the ON state, the release switch R. When the SW is turned on, the CPU 1 starts the SV shooting operation. CPU1
Is the CPU for the photometric information obtained by the photometric amplifier circuit OP1.
2, and the CCD 4 is driven via the DRV 1 according to the photometric information. Then, the video signal obtained by the CCD 4 is transmitted to the MEM 1 via the INT 1, and the ME
Store in M1.

On the other hand, after the power is turned on, the switching element TG
2 is in the ON state, the release R. When the SW is turned on, the CPU 2 starts the AG photographing operation. CPU2 is
The driver circuit DRV3 is controlled according to the photometric information obtained by the photometric amplifier circuit OP1, and the shutter speed and aperture are set so that the specified exposure amount can be obtained. After the shooting, the driver circuit DRV3 is controlled to wind the film and charge the shutter by the feeding motor to prepare for the next shooting.

The operation member SEL1 has a photographing mode, that is, an AG / SV simultaneous photographing mode, an AG photographing mode and an S mode.
In addition to switching the V shooting mode, it is selected whether to enable or disable the automatic shooting mode switching function according to the present invention. Note that, here, a case will be described in which the automatic switching function of the shooting mode is enabled. First, when the AG / SV simultaneous photographing mode is selected by the operation member SEL1, the setting signal is the interface circuit I.
It is supplied to the switching elements TG1 and TG2 via NT2 to turn on both the switching elements TG1 and TG2. Normally, at this time, the release switch R. When the SW is turned on, the CPU1 and the CPU2 start the photographing and recording operation as described above.

However, when the AG photographing is impossible due to the above-mentioned reasons, the CPU 2 detects the state and outputs the AG photographing impossible signal to the interface circuit INT2. As a result, the switching element TG2 is turned off, and the release switch R. CPU2 even if SW is turned on
Circuits related to AG photography, such as, do not start the photography operation.
However, a circuit related to SV shooting such as the CPU 1 can perform a shooting operation. On the contrary, when the SV photographing is impossible due to the above reason, the CPU 1 detects the state and outputs the SV photographing impossible signal to the interface circuit INT2. As a result, the switching element TG1 is turned off, and the release switch R. Even if the SW is turned on, the circuit related to the SV shooting such as the CPU 1 does not start the shooting operation. However, a circuit related to AG photographing such as the CPU 2 can perform a photographing operation.

Next, when the AG photographing mode is selected by the operating member SEL1, the setting signal is the switching element TG2 via the interface circuit INT2.
To turn on the switching element TG2. At this time, the switching element TG1 is off, and the SV photographing operation is not performed even if the release is performed. However, when the AG photographing becomes impossible due to the above-mentioned reason, as described above, the CPU 2 detects the state, outputs the AG photographing impossible signal through the interface circuit INT2, and switches the switching element TG2. Turn off. At this time, the interface circuit INT2
A signal indicating whether or not SV photographing is possible is received from U1, and if SV photographing is possible, the switching element TG1 is forcibly turned on. As a result, the CPU 1 causes the release switch R. The SV shooting operation is started when the SV shooting start signal from the SW is ready to be received and the shutter is released.

Further, when the SV photographing mode is selected by the operating member SEL1, the setting signal thereof is sent to the switching element TG1 via the interface circuit INT2.
To turn on the switching element TG1. At this time, the switching element TG2 is turned off, and the AG photographing operation is not performed even if the release is performed. However, when the SV shooting becomes impossible due to the reason described above, the CPU 1 detects the state and outputs the SV shooting disabled signal through the interface circuit INT2, and the switching element TG1 is turned on, as described above. Turn off. At this time, the interface circuit INT2
A signal indicating whether or not AG photographing is possible is received from U2, and if the AG photographing is possible, the switching element TG2 is forcibly turned on. As a result, the CPU 2 causes the release switch R. When the AG photographing start signal from the SW is ready to be received and the shutter is released, the AG photographing operation is started.

Next, the operation of the operation member SEL1 and the interface circuit INT2 when switching the photographing mode will be described. FIG. 4 shows circuits of the operating member SEL1 and the interface circuit INT2. In the figure, SSW1, SS
W2 is an AG / SV shooting mode selection switch. When the switch SSW1 is off (H level), the SV shooting mode is selected, and when the switch SSW2 is off (H level), the AG shooting mode is selected. Switch SSW1,
When both 2 are off, the AG and SV simultaneous photographing mode is selected, and when the switches SSW1 and SSW2 are on (L level), the respective photographing operations are prohibited. Normally, these switches SSW1 and SSW2 are turned on and off in conjunction with a shooting mode setting dial and the like. SSW3 is
This is an automatic switching function selection switch, and when it is off (H level), the automatic switching function is enabled. In addition, these switches SSW1 to 3 configure the operation member SEL1. G1 to G8 are well-known logic circuits.

First, a case where both the switches SSW1 and SSW2 are turned off (H level) and the AG and SV simultaneous photographing mode is selected will be described. CPU1, CP
From U2, an H-level signal is supplied if the respective images can be captured. One of the inputs of the AND gates G5 and G8 is connected to the switches SSW1 and SSW2, respectively, and is supplied with an H level signal.
G5 → G1 →
Electric power is transmitted through the route of TG1 and G8 → G2 → TG2 to turn on the switching elements TG1 and TG2. In this state, as described above, the release switch R. When the SW is turned on, the AG photographing operation and the SV photographing operation are started.

Next, when the switch SSW1 is off (H level) and the switch SSW2 is on (L level),
The SV shooting mode is selected. At this time, if the AG photographing is possible, an H level signal is supplied from the CPU 2, but since the switch SSW2 is at the L level, the output of the logic circuit G8 becomes the L level, which is the logic circuit G.
2 is transmitted to the switching element TG2 and the TG2 is turned off. That is, the release switch R. Even if the SW is turned on, the AG photographing circuit does not operate. At this time, if the SV photographing becomes impossible, the CPU 1 supplies an L level signal indicating that recording is impossible to the logic circuit G5,
→ G1 → Transmission element T is transmitted through the path of TG1
G1 is turned off. That is, the operation of the SV photographing circuit is prohibited. At this time, when the output of CPU1 becomes L level, G4 is opened through G7 and the output of CPU2 becomes G7 → G.
4 → G2 → TG2 is transmitted and the release switch R. SW
When the button is turned on, AG photography is started. by this,
If the SV shooting is disabled in the SV shooting mode due to the above-mentioned reason while shooting is being performed in the SV shooting mode, A
Switch to G shooting mode.

Note that SSW2 is off (H level), SS
When the AG photographing mode is disabled for the reason described above when W1 is on (L level) and the AG photographing mode is selected, the interface circuit INT2 automatically sets the S state.
Switch to V shooting mode. This operation is completely opposite to the above-described operation of switching to the AG shooting mode when SV shooting is disabled when the SV shooting mode is selected, and thus the description thereof is omitted.

In this way, the interface circuit INT2
Operates so that the release signal is not input to the circuit on the side in which shooting is not possible when either AG or SV is in a state in which shooting is not possible. There is no risk that an error will occur due to the release signal being supplied to the circuit.

The automatic changeover function selection switch SS
When W3 is set to ON (L level), AG, S
When one of the Vs becomes incapable of photographing and an L level signal is supplied from the CPU 1 or CPU 2 to the interface circuit INT2, an L level signal is sent to the logic circuits G1 and G2 via the logic circuits G3 and G4. Is supplied, both switching elements TG1 and TG2 are turned off, and AG,
Shooting operation is prohibited for both SVs.

Next, a method of detecting the above-mentioned state in which AG photographing is impossible will be described. FIG. 5 shows a state in which the back cover of the camera is released. In the figure, 11 is a film presence / absence detection protrusion,
Reference numeral 12 is a film winding spool, 13 is a film rewind button, 14 is a back lid opening / closing detection member, 14a is a projection for the back lid opening / closing detection member, 15 is a film counter, 16 is a shutter curtain, and 17 is an AG film.

FIG. 6 shows the state detection switch SW shown in FIG.
The circuit of is shown. In the figure, Sa1 is a film presence / absence switch interlocking with a film presence / absence detection protrusion, and Sa2 is a film presence / absence switch.
A film winding pulse switch, Sa3 is a rewinding switch interlocking with the rewinding button 13, and Sa4 is a rewinding switch.
The back cover switch, Sa5, which works with the back cover open / close detection member,
An initial idling completion detection switch, Sa6, which is interlocked with the film counter 15, is a charge completion detection switch.

When the film 17 is loaded in the camera, the film presence / absence detection protrusion 11 is pushed down by the film 17 to turn off the film presence / absence switch Sa1.
A film presence / absence signal is sent to the CPU 2. When the film winding spool 12 is driven by the motor M and the film 17 is wound up, the pulse switch Sa2 is turned on / off a predetermined number of times for feeding one film of film,
A pulse signal is sent to the CPU 2. The CPU 2 counts this pulse signal to detect the winding operation of the film 17, the winding amount, the completion of the winding operation, and the like. When the film rewind button 13 is operated, the rewind switch Sa
3 is turned on, and a rewinding command signal is sent to the CPU 2.
When the back lid of the camera is closed, the projection 14a for the back lid opening / closing detection member pushes down the back lid opening / closing detection member 14. As a result, the back cover opening / closing switch Sa4 is turned off, and a back cover closing signal is sent to the CPU 2. After the film cartridge is loaded into the camera, the initial idling operation is performed until the first shooting frame on the film 17 is set to the predetermined shooting position. When the first shooting frame is set to a predetermined shooting position and the initial idling operation is completed, the idling completion detection switch Sa5 is turned off and the idling operation completion signal is sent to the CPU 2. The charge completion detection switch Sa6 is turned on when the charge state of the shutter curtain 16 is completed, and a charge completion signal is sent to the CPU 2.

FIG. 7 is a flow chart showing a program executed by the CPU 2 for detecting whether or not AG photographing is possible. This flowchart will be used to explain the operation of detecting whether or not AG photographing is possible. In step S1, it is determined whether or not the back cover of the camera is opened, and if it is opened, step S
In step 9, the L level signal indicating that photographing is not possible is output to the interface circuit INT2, and processing such as warning display when the back cover is opened is performed. If the case back is closed, the process proceeds to step S2. In step S2, it is determined whether or not there is a film. If there is no film, the process proceeds to step S10, where an L level signal indicating that shooting is not possible is output to the interface circuit INT2, and when there is no film such as an empty film display. Process. If there is a film, the process proceeds to step S3.

In step S3, it is determined whether or not the film rewind button 13 is operated by the switch Sa3, and if the switch Sa3 is on, the process proceeds to step S11, and the interface circuit INT2 is instructed to take an L level signal indicating that photography is impossible. Is output, the motor M is controlled to rewind the film 17, and the rewinding display is displayed on the display element DISP. If the rewind switch Sa3 is off, the process proceeds to step S4. In step S4, it is determined whether or not the initial jump feeding of the film is completed by the jump feed completion detection switch Sa5. If the switch Sa5 is turned on, the process proceeds to step S12, and the interface circuit INT2 is instructed to indicate that photography is impossible. In addition to outputting the level signal, the motor M is controlled to perform the initial idling of the film 17. If the switch Sa5 is off, the process proceeds to step S5.

Next, in step S5, a release operation is performed. That is, when the release button is operated, the release switch R. The SW is turned on, the aperture is adjusted based on the photometric information detected in advance, the main mirror 2 is retracted from the optical axis of the lens 1, and the traveling of the shutter curtain 16 is started. Then, after the shutter time preset based on the photometric information has elapsed, the shutter curtain 16 is closed and the exposure of the film is completed. After that, the shutter charging operation is performed in preparation for the next release operation. Step S
In step 6, it is determined whether or not the shutter charge is completed by the switch Sa6. If the switch Sa6 remains off, the process proceeds to step S13, and the charge operation is currently being performed, or some failure occurs and the shutter charge is not performed. Since it has not been completed, AG photographing is not possible, an L level signal is output to the interface circuit INT2, and the charging operation is continued, or a warning is displayed if a predetermined time is exceeded. If the charge completion detection switch Sa6 is turned on, the process proceeds to step S7.

Next, in step S7, the pulse switch Sa
The number of pulses generated from 2 is counted to determine whether or not the winding operation of the film 17 after the completion of the shutter charge is completed, and if the pulse count value has not reached the predetermined number, the process proceeds to step S14. In step S14,
It is determined whether or not the pulse count value is a value indicating the end of the film 17, and if it is the end value, the process proceeds to step S16, and if not, the process proceeds to step S15. In step S16,
Since the photographing of all the frames on the film 17 has been completed, the L level signal indicating that photographing is impossible is output to the interface circuit INT2, the terminal display is performed on the display element DISP, and the process returns to step S1.

On the other hand, when it is determined in step S14 that it is not the end of the film, the film 17 is being wound, and in step S15, an L level signal indicating that photographing is impossible is output to the interface circuit INT2, and step S6 is performed.
Return to. At this time, the timer counts the time until a predetermined number of pulses corresponding to one frame is counted, and if the winding operation takes more than a preset time, the winding device malfunctions, the battery voltage drops, etc. Is generated, the interface circuit INT2 is instructed to indicate L
You may make it output a level signal. Step S7
If the pulse count value has reached the predetermined number, the winding operation has been completed, and in step S8, since all the conditions enabling the AG photographing are satisfied, it is indicated to the interface circuit INT2 that the AG photographing is possible. It outputs an H level signal. In this way, a state in which AG photography is not possible, such as when the film is not loaded, when the film is initially fed, when it is rewound, and when it is wound up, is detected.

Next, in order to judge whether or not the AG photographing is possible, the photographing condition is set to the loaded A by the block diagram shown in FIG.
The operation of detecting whether or not the G film 17 is within the applicable range will be described. It should be noted that the same reference numerals are given to the same devices as those shown in FIG. 2, and the description thereof will be omitted. In FIG.
DX is a contact for inputting film sensitivity information of the AG film 17, Smod is a shooting mode selection switch, Rtv.
Is a shutter speed setting variable resistor linked to a shutter speed setting dial (not shown), and Rav is an aperture setting variable resistor linked to an aperture setting dial (not shown).

In AG photography, an apex operation is performed based on the subject brightness, film sensitivity, shutter speed, and aperture value calculated based on the photometric information, and it is determined whether the exposure amount is appropriate for the film sensitivity. Also, AG
There are shooting modes such as a manual mode, a shutter speed priority auto mode, an aperture priority auto mode, and a program auto mode, and one of the shooting modes is selected by the shooting mode selection switch Smod. Further, a constant voltage is applied to both ends of the shutter speed setting variable resistor Rtv, and when the shutter speed is set by the shutter speed setting dial, a voltage corresponding to the set speed is applied to the slider of the variable resistor Rtv. Occurs and is input to the CPU 2 as a shutter speed signal.
Similarly, a constant voltage is applied to both ends of the aperture setting variable resistor Rav, and when the aperture is set by the aperture setting dial, a voltage corresponding to the set aperture value is applied to the slider of the variable resistor Rav. It is generated and is input to the CPU 2 as a diaphragm signal.

The film 17 has a unique film sensitivity characteristic according to its type. Since the film sensitivity cannot be changed after the film 17 is loaded, it is necessary to set an optimum combination of the shutter speed and the aperture value so that the exposure amount is appropriate for the subject brightness. However, the range of the combination is limited depending on the performance of the shutter and the aperture of the lens 1, and the exposure amount may not be appropriate. Such a case is said to be outside the interlocking range.
If the brightness of the subject is bright and the combination of shutter speed and aperture value cannot handle this brightness value, overexposure occurs.If the brightness of the subject is too dark and the combination of shutter speed and aperture value cannot handle it, the exposure is set. It will be under. If the amount of overexposure or underexposure is slight, there is no problem as a photograph, but if it is too large, it becomes a photograph that does not appear.

The CPU 2 determines whether or not the subject brightness is outside the interlocking range at the time of photometry before the release, and if it is out of the interlocking range, outputs an L level signal to the interface circuit INT2 indicating that shooting is not possible, and performs SV shooting. Switch to. In addition,
When the subject brightness changes and falls within the interlocking range, the CPU 2 outputs an H level signal indicating that shooting is possible to the interface circuit INT2 to enable AG shooting.

Next, the operation of detecting the power supply voltage and determining whether AG photographing or SV photographing is possible will be described with reference to the circuit diagram of FIG. It should be noted that the same reference numerals are given to the same devices as those shown in FIG. 2, and the description thereof will be omitted. BAT is a power source, Psw
Is a power switch, DDC is a DC-DC converter that stabilizes the voltage of the power supply BAT and supplies the stabilized power supply voltage to all circuits including the CPUs 1 and 2, MDRV is a motor driver circuit, and R1 and R2 are SV circuit battery check. The voltage dividing resistors R3 and R4 are voltage dividing resistors for checking the AG circuit battery. Note that here, a case is shown in which power is supplied to the AG circuit and the SV circuit from a common power source.

The power supply BAT supplies the voltage stabilized through the power switch Psw and the DC-DC converter DDC to the AG circuit and the SV circuit. AG, SV
The CPUs 1 and 2 of both circuits input the divided voltage values of the resistors R1 and R2 or R3 and R4 connected between the power supply BAT and the ground, and A / D-convert the voltage to detect the voltage of each circuit. When the power supply voltage drops below a voltage sufficient for performing a shooting operation (hereinafter referred to as a battery check voltage), the CPU
1 and 2 output an L level signal indicating that photographing is impossible to the interface circuit INT2, and display a warning to stop the function.

Normally, the battery check voltage does not have the same value in the AG circuit and the SV circuit. This is because the voltage determined by the performance of the motor M that winds up the AG film 17 and its film torque is different from the voltage determined by the performance of the motor that drives the floppy in the SV circuit and its starting torque. .. Therefore, depending on their performance, the AG circuit may have a higher battery check voltage, and the SV circuit may have a higher battery check voltage. The following four cases can be summarized as these possible cases. (1) In the AG / SV simultaneous shooting mode, the power supply voltage of the AG shooting circuit first becomes lower than the battery check voltage,
When AG shooting becomes impossible. (2) In the AG and SV simultaneous shooting mode, the power supply voltage of the SV shooting circuit first becomes below the battery check voltage,
When SV shooting becomes impossible. (3) In the AG shooting mode, the power supply voltage of the AG shooting circuit becomes equal to or lower than the battery check voltage, and the AG shooting is disabled. At this time, the power supply voltage of the SV shooting circuit is higher than the battery check voltage, and the SV When shooting is possible. (4) In the SV shooting mode, the power supply voltage of the SV shooting circuit falls below the battery check voltage, and SV shooting becomes impossible. At this time, the power supply voltage of the AG shooting circuit is higher than the battery check voltage, and When shooting is possible. The CPU on the side in which shooting is impossible sends a message indicating that shooting is not possible to the interface circuit INT2, and A
In the G and SV simultaneous photographing mode, the photographing is continued on the photographable side, and in the AG photographing mode or the SV photographing mode, the circuit is switched to the photographable side. However, when both the power supply voltages of the AG and SV circuits are equal to or lower than the battery check voltage, neither shooting is prohibited and a warning is issued. in this way,
The power supply voltage supplied from the battery BAT is detected, and if it is below a predetermined battery check voltage, the AG and SV photographing circuits are switched.

Next, a method of detecting a state in which SV photographing is impossible will be described. FIG. 10 shows a circuit for detecting a state in which SV photographing is impossible, and FIG. 11 shows the rear surface of the camera.
In these figures, the same components as those in FIG. 2 are designated by the same reference numerals and the description thereof will be omitted. In these figures, Sflp is the floppy disk 2 on the SV photographing medium.
1 and the like, a floppy detection switch that is turned on when the floppy disk 21 is set in the camera, Opwet is a dew condensation state detection sensor provided near the magnetic recording head of the floppy disk 21,
Reference numeral 22 denotes a back cover of the camera, on which a floppy disk 21 is loaded, and a floppy detection switch Sflp and a dew condensation state detection sensor Opwet are arranged.

FIG. 12 is a flow chart showing a program executed by the CPU 1 for detecting a state in which SV photographing is impossible. In step S21, the switch Sfl
It is determined by p whether or not the floppy disk 21 is loaded. If it is not loaded, the process proceeds to step S27 to warn that the floppy disk 21 has not been loaded, and at the subsequent step S32, an L level signal indicating that SV imaging is impossible. To the interface circuit INT2. If the floppy disk 21 is loaded, the process proceeds to step S22. In step S22, the condensation state detection sensor Opwe
Whether or not the magnetic recording head is condensed is determined by t, and if it is condensed, the process proceeds to step S28 to issue a warning, and then in step S32, the interface circuit IN
The fact that SV shooting is impossible is transmitted to T2. If there is no condensation, the process proceeds to step S23.

In step S23, the interface circuit I
The remaining capacity of the recording capacity of the recording medium MEM1 is investigated via NT1. If there is no remaining capacity in the recording capacity, the process proceeds to step S29 to issue a warning, and in the following step S32, the fact that SV imaging is not possible is transmitted to the interface circuit INT2. If there is at least one frame remaining in the recording capacity, step S2
Go to 4. In step S24, it is determined whether or not recording on the recording medium MEM1 is possible, and if recording is not possible during recording of image data at the time of previous shooting or investigation of remaining capacity of recording capacity, the process proceeds to step S30. After issuing the warning, step S
At 32, the fact that SV imaging is impossible is transmitted to the interface circuit INT2. If the recording on the recording medium MEM1 is possible, the process proceeds to step S25.

In step S25, the image data photographed with the release is recorded in the recording medium MEM1,
In a succeeding step S26, it is determined whether or not the recording is completed. If the recording operation has not been completed, the process proceeds to step S31 to display on the display element DISP that image data is being recorded, and in the subsequent step S32, the interface circuit I
The fact that SV shooting is not possible is sent to NT2. Step S2
When it is determined that the recording operation is completed in 6 and after transmitting the fact that the SV photographing is not possible to the interface circuit INT2 in step S32, the process returns to step S21 and the above processing is repeated. In this way, the interface circuit INT2 that has detected the state in which SV shooting is impossible and has received a signal to that effect causes the AG in the AG and SV simultaneous shooting modes to operate.
Shooting is continued, and the SV shooting mode is switched to the AG shooting mode.

Next, a description will be given of an embodiment in which the fact that the photographing mode has been switched is displayed on the display device DISP, or recorded on a recording medium such as a floppy disk or an AG film. FIG. 13 shows an outline of the display element DISP described above, and FIG. 14 shows an outline of the AG film. Also, FIG.
Reference numeral 5 shows a circuit related to these display operation and recording operation. It should be noted that the same reference numerals are given to the same devices as those shown in FIG. 2, and the description thereof will be omitted. In these figures, d
isp1 is a normal camera display segment group for displaying the number of shots and shutter speed display, and disp2 is an AG segment.
A display segment that lights up when shooting is possible, disp3 indicates a display segment that lights up when SV shooting is possible, and Agf indicates an AG shooting film. LED1 is a film Agf for AG photography.
It is a light-emitting diode that imprints information on the camera and is mounted on the back cover of the camera.

As described above, the AG, S according to the present invention
In order to prioritize the photo opportunity, the V-dual camera either switches the shooting mode regardless of the photographer's intention when shooting becomes impossible or continues shooting only on the shootable side. Therefore, when the photographing mode is switched or the photographing mode is changed during photographing, it is necessary to inform the photographer by displaying the fact on the display device DISP. Interface circuit INT
Reference numeral 3 inputs normal shooting information such as the number of shooting frames and shutter speed from each of the CPUs 1 and 2, and information on whether shooting is possible in each shooting mode of AG and SV, and drives the driver circuit DRV2 in accordance with the information. If AG shooting is possible, AG display segment disp2
Is turned on, the AG display segment disp2 is blinked when the AG shooting is impossible, and the SV display segment disp3 is turned on when the SV shooting is possible,
If SV shooting is not possible, SV display segment d
Blink isp3.

Further, when the shooting mode is switched during shooting, or when the shooting mode is changed, it may be confusing if the user does not know that the shooting method is different from the intended shooting method when editing after shooting. There is. Therefore, when the shooting mode is switched or changed,
Recording medium M on the switched side or the side that continues shooting
The fact that the shooting mode has been switched or changed is recorded on the EM1 or the AG film Agf. For example, SV
When the camera is in a shooting disabled state and shooting is switched to AG shooting, the light emitting diode LED1 is turned on for a certain period of time, and the dot mark shown by disp4 in FIG. 14 is provided between the frames of the shot AG film Agf. Etc. are imprinted. On the other hand, when the AG photographing is performed and the photographing becomes impossible and the SV photographing is switched, the interface circuit INT1 is controlled to write the photographing mode switching information into the recording medium MEM1 together with the photographed image data.

As described above, when either AG or SV shooting is in a shooting disabled state, the shooting mode is automatically switched to the shooting mode on the possible side, and shooting is performed on the shooting mode on the available side in the simultaneous shooting mode. Since I have decided to continue, I will never miss a photo opportunity. In addition, even if it becomes impossible to shoot once, if it becomes possible to shoot again,
Since it automatically switches to the originally set shooting mode, you can shoot in the intended shooting mode except when shooting is not possible, and you do not miss a photo opportunity even when shooting is not possible .. Furthermore, when the shooting mode is switched or changed, the fact is recorded on the recording medium or silver salt film on the switched side, so that even if the shooting was not performed by the intended shooting method, There is no risk of confusion when editing. Furthermore,
Since the shooting enabled / disabled status in each shooting mode is displayed in a different form, when the shooting mode is switched or changed, the photographer can immediately recognize the fact and can display the appropriate status. Correspondence can be taken.

In the structure of the above embodiment, the shutter mechanism portion, the shutter curtain 16, the magnet Mg and the motor M (not shown) serve as the film exposing means and the image pickup device (CC).
D) Recording medium M such as 4 and floppy disk 21
EM1 is electronic image recording means, operating members SEL1 of switches SSW1 and 2 are selecting means, state detection switches SW, CPU2 of switches Sa1-6, resistors Rtv, Ra.
v, R3, R4 and the sensitivity information input contact DX are the first detection means, the switch Sflp, the sensor Opwet, C
PU1 uses the second detection means as the interface circuit INT
2 is the switching means, the display element DISP and the display segments disp2, 3 are the display means, and the light emitting diode LED.
1 and the interface circuit INT1 respectively constitute recording means.

[0051]

As described above, according to the first aspect of the invention, when it is detected that it is impossible to obtain a silver halide photograph when the simultaneous photographing mode is selected, the electronic still image is detected. Since it is automatically switched to the photo shooting mode, you will not miss a photo opportunity even when silver halide photography is not possible. At this time, according to the second aspect of the present invention, since the information indicating that the image is not taken in the simultaneous shooting mode is recorded in the recording medium of the electronic still picture, even if the shooting method is not intended by the photographer. ,
There is no risk of confusion when editing after shooting. Further, at this time, according to the invention of claim 3, when it is detected that the silver salt photograph can be obtained, the mode is automatically switched to the silver salt photography mode again. It is possible to shoot in the simultaneous shooting mode intended by the photographer except when it is impossible, and never miss a photo opportunity even when silver salt photography is not possible.
According to the invention of claim 4, when it is detected that it is impossible to obtain an electronic still photograph while the simultaneous photographing mode is selected, the mode is automatically switched to the silver salt photographing mode. As a result, you will not miss a photo opportunity even when electronic still photography is not possible. Further, at this time, according to the invention of claim 5, since the information indicating that the photographing is not performed in the simultaneous photographing mode is recorded on the silver salt film, even if the photographing method is not intended by the photographer, after the photographing, There is no fear of confusion when editing. Further, at this time, according to the invention of claim 6, when it is detected that the electronic still picture can be obtained, the electronic still picture taking mode is automatically switched again. It is possible to perform shooting in the simultaneous shooting mode intended by the photographer except in a state where shooting is not possible, and never miss a photo opportunity even in a state where electronic still photography is not possible. According to the invention of claim 7, when the silver halide photography mode is selected,
When it is detected that it is not possible to obtain a silver halide photograph, the mode is automatically switched to the electronic still photography mode. Never miss out. At this time, according to the invention of claim 8, the fact that the photographing mode is switched is recorded on the recording medium of the electronic still photograph, so that the photographing is performed in the electronic still photograph photographing mode not intended by the photographer. Also, there is no fear of confusion when editing after shooting. Further, at this time, claim 9
According to the invention, when it is detected that it is possible to obtain a silver salt photograph, the mode is automatically switched to the silver salt photography mode again. You can shoot in the intended silver salt photography mode, and never miss a photo opportunity even when silver salt photography is impossible. According to the tenth aspect of the invention, when it is detected that the electronic still picture cannot be obtained while the electronic still picture taking mode is selected, the mode is automatically switched to the silver salt picture taking mode. Therefore, even if it is not possible to take a picture in the electronic still picture taking mode intended by the photographer, a photo opportunity will not be missed. At this time, claim 11
According to the invention, since the switching of the shooting mode is switched to the silver salt film, there is a possibility that the shooting may be confused at the time of editing after shooting even if the shooting is performed in the silver salt photography mode not intended by the photographer. There is no. Further, at this time, according to the invention of claim 12, when it is detected that the electronic still photograph can be obtained, the electronic still photograph photographing mode is automatically switched again, so that photographing is impossible. It is possible to take a picture in the electronic still picture taking mode intended by the photographer except in such a state, and never miss a photo opportunity even when the electronic still picture taking is impossible. According to the thirteenth aspect of the present invention, since the photographable state and the non-photographable state of the silver salt photograph and the electronic still photograph are displayed in different display modes, the camera automatically switches the photographing modes. However, even if the shooting mode is changed, the photographer can immediately recognize the fact and take appropriate action. According to the invention of claim 14, when the simultaneous photographing mode is selected, it is displayed that the silver salt photography or the electronic still photography cannot be performed and only one of them can be photographed. , The photographer can immediately recognize it and take appropriate action.

[Brief description of drawings]

FIG. 1 is a diagram for responding to a complaint.

FIG. 2 is a block diagram showing the overall configuration of an embodiment.

FIG. 3 is a diagram showing an outline of an optical system of a camera.

FIG. 4 is a circuit diagram of an operation member and an interface circuit.

FIG. 5 is a diagram showing a state where a back cover of the camera is opened.

FIG. 6 is a circuit diagram of a camera state detection switch.

FIG. 7 is a flowchart showing a program for detecting whether silver salt photography is possible.

FIG. 8 is a diagram showing a circuit for detecting whether or not a shooting condition is within an applicable range of a loaded film.

FIG. 9 is a diagram showing a power supply voltage detection circuit.

FIG. 10 is a circuit diagram for detecting a state in which electronic still photography is impossible.

FIG. 11 is a diagram showing the back surface of the camera.

FIG. 12 is a flowchart showing a program for detecting whether electronic still photography is possible.

FIG. 13 is a diagram showing an outline of a display element.

FIG. 14 is a diagram showing an outline of a silver salt film.

FIG. 15 is a diagram showing a circuit for displaying and recording a change or change of a shooting mode.

[Explanation of symbols]

 1 Lens 2 Half Mirror 3 Film 4 Image Sensor (CCD) 5 Splitter 6 Penta Prism 7 Screen 8 Photosensitive Element (SPD) 9 Sub Mirror 11 Film Presence / Absence Detection Protrusion 12 Film Rewind Spool 13 Film Rewind Button 14 Back Lid Open / Close Detection Member 14a Back lid opening / closing detecting member projection 15 Film counter 16 Shutter curtain 17 AG film 21 Floppy disk 22 Back lid 100 Film exposing means 101 Electronic image recording means 102 Selecting means 103 First detecting means 104, 104A to 104G switching means 105, 105A to 105C recording means 106 second detecting means 107, 107A display means DRV1, DRV2, DRV3 driver circuit INT1, INT2, INT3 interface circuit MEM1 SV Shadow recording medium DISP display device OP1 photometric amplifier circuit SEL1 operating member SW state judgment switch Sa1~Sa6 switch R. SW Release switch TG1, TG2 Switching element SSW1, SSW2 Shooting mode selection switch SSW3 Automatic switching function selection switch G1-8 Logic circuit DX contact Rtv, Rav, R1-R4 Resistor Smod Shooting mode selection switch BAT power supply Psw power switch DDC DC- DC converter MDRV Motor driver circuit Sflp Floppy detection switch Opwet Dew condensation detection sensor disp1 to 3 Display segment disp4 Dot mark LED1 Light emitting diode

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Shinichi Ushio 1-3-6 Nishioi, Shinagawa-ku, Tokyo Inside Nikon Oi Manufacturing Co., Ltd. (72) Inventor Hideya Inoue 1-3-6 Nishioi, Shinagawa-ku, Tokyo Nikon Oi Manufacturing Co., Ltd.

Claims (14)

[Claims] 1. For both silver salt photography and electronic still photography, comprising a film exposing means for exposing a subject image on a silver salt film, and an electronic image recording means for recording electronic image data corresponding to the subject image on a recording medium. In the camera, the film exposure means and the electronic image recording means are both actuated to simultaneously obtain the silver salt photograph and the electronic still picture, and the film exposure means is actuated to obtain the silver salt photograph. Selecting means for selecting one of the electronic still picture taking modes for obtaining the electronic still picture by operating the silver salt picture taking mode for obtaining and the electronic image recording means, and the film exposing means for selecting A first detecting means for detecting whether or not a silver salt photograph can be obtained; and a case where the simultaneous photographing mode is selected by the selecting means. And a switching means for automatically switching to the electronic still photography mode when the first detection means detects that it is impossible to obtain the silver salt photograph. A camera for both photography and electronic still photography. 2. The dual-use silver salt photography and electronic still photography camera according to claim 1, wherein it is detected that it is impossible to obtain the silver salt photography in the simultaneous photography mode, and the electronic still photography mode is detected. A camera for both silver halide photography and electronic still photography, comprising recording means for recording information indicating that the recording medium is not photographed in the simultaneous photographing mode when the camera is switched to. 3. The silver salt photograph and electronic still photograph dual-use camera according to claim 1 or 2, wherein the switching means cannot obtain the silver salt photograph in the simultaneous photographing mode. When it is detected and it is detected by the first detection means that the silver salt photograph can be obtained while switching to the electronic still photography mode, it automatically switches to the simultaneous photography mode again. A camera for both silver halide photography and electronic still photography, which can be switched. 4. A silver salt photographic and an electronic still photographic both equipped with a film exposing means for exposing a subject image on a silver salt film and an electronic image recording means for recording electronic image data corresponding to the subject image on a recording medium. In the camera, the film exposure means and the electronic image recording means are both actuated to simultaneously obtain the silver salt photograph and the electronic still picture, and the film exposure means is actuated to obtain the silver salt photograph. Selecting means for selecting any one of the electronic still picture taking modes for obtaining the electronic still picture by operating the silver salt picture taking mode for obtaining and the electronic image recording means, and the electronic image recording means. Second detection means for detecting whether or not the electronic still photograph can be obtained, and the simultaneous photography mode are selected by the selection means. At this time, when it is detected by the second detecting means that it is impossible to obtain the electronic still photograph, a switching means for automatically switching to the silver salt photography mode is provided. Camera for both silver salt photography and electronic still photography. 5. The silver salt photography and electronic still photography dual-use camera according to claim 4, wherein it is detected that it is impossible to obtain the electronic still photography in the simultaneous photography mode, and the silver salt photography photography mode is detected. A camera for both silver salt photography and electronic still photography, characterized by comprising recording means for recording information indicating that the film is not photographed in the simultaneous photographing mode on switching to the silver salt film. 6. The silver salt photography and electronic still photography dual-use camera according to claim 4 or 5, wherein the switching means cannot obtain the electronic still photography in the simultaneous photography mode. When the second detecting means detects that it is possible to obtain the electronic still photograph while it is detected and is switching to the silver salt photography mode, it automatically switches to the simultaneous photography mode again. A camera for both silver halide photography and electronic still photography, which can be switched. 7. For both silver salt photography and electronic still photography, comprising film exposure means for exposing a subject image on a silver salt film, and electronic image recording means for recording electronic image data corresponding to the subject image on a recording medium. In the camera, the film exposure means and the electronic image recording means are both actuated to simultaneously obtain the silver salt photograph and the electronic still picture, and the film exposure means is actuated to obtain the silver salt photograph. Selecting means for selecting one of the electronic still picture taking modes for obtaining the electronic still picture by operating the silver salt picture taking mode for obtaining and the electronic image recording means, and the film exposing means for selecting First detection means for detecting whether or not a silver salt photograph can be obtained, and the silver salt photography mode is selected by the selection means. And a switching means for automatically switching to the electronic still photography mode when the first detection means detects that the silver salt photograph cannot be obtained. Camera for both silver salt photography and electronic still photography. 8. The electronic camera for both silver salt photography and electronic still photography according to claim 7, wherein it is detected that it is impossible to obtain the silver salt photography in the silver salt photography mode. A camera for both silver halide photography and electronic still photography, comprising recording means for recording the switching of the photographing mode on the recording medium when switched to the photographing mode. 9. The silver salt photography and electronic still photography dual-use camera according to claim 7 or 8, wherein the switching means cannot obtain the silver salt photography in the silver salt photography mode. When it is detected that it is possible to obtain the silver salt photograph while switching to the electronic still photography mode, the silver salt photography mode is detected again. A camera for both silver halide photography and electronic still photography, characterized by automatically switching to. 10. A silver salt photographic and an electronic still photographic both equipped with a film exposing means for exposing a subject image on a silver salt film and an electronic image recording means for recording electronic image data corresponding to the subject image on a recording medium. In the camera, the film exposure means and the electronic image recording means are both actuated to simultaneously obtain the silver salt photograph and the electronic still picture, and the film exposure means is actuated to obtain the silver salt photograph. Selecting means for selecting any one of the electronic still picture taking modes for obtaining the electronic still picture by operating the silver salt picture taking mode for obtaining and the electronic image recording means, and the electronic image recording means. Second detection means for detecting whether or not the electronic still photograph can be obtained; and the selection means selects the electronic still photography mode. And a switching means for automatically switching to the silver salt photography mode when the second detection means detects that it is impossible to obtain the electronic still picture. A camera for both silver salt photography and electronic still photography, which is characterized by. 11. The silver salt photography and electronic still photography dual-use camera according to claim 10, wherein it is detected that it is impossible to obtain the electronic still photography in the electronic still photography mode, and the silver salt photography is taken. A camera for dual-use silver salt photography and electronic still photography, comprising recording means for recording the switching of the photographing mode on the silver salt film when the mode is switched. 12. The silver salt photography and electronic still photography dual-use camera according to claim 10 or 11, wherein the switching means cannot obtain the electronic still photography in the electronic still photography mode. Is detected, and when switching to the silver halide photography mode,
When it is detected by the second detecting means that the electronic still picture can be obtained, the electronic still picture taking mode is automatically switched again to the silver salt picture and electronic still picture camera. .. 13. The silver salt photography and electronic still photography dual-use camera according to claim 1, wherein the silver salt photography and the electronic still photography can be performed or cannot be performed. A camera for both silver halide photography and electronic still photography, characterized by comprising display means for displaying the states in different display modes. 14. The silver salt photography and electronic still photography dual-use camera according to claim 1, wherein the silver salt photography is performed when the simultaneous photography mode is selected by the selection means. Alternatively, the dual-use camera for silver-salt photography and electronic still photography is provided with a display unit for displaying that the electronic still photography cannot be performed and only one of them can be taken.