JP2000098484A - Camera used both for silver salt photographing and electronic image pickup - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera used both for silver salt photographing and electronic image pickup capable of displaying a subject image and a composition auxiliary line in an easy-to-view state and easily executing composition deciding operation. SOLUTION: A subject image is converted into an electrical signal by an electronic image pickup element of an electronic image pickup device, and the picked-up image is displayed on a liquid crystal monitor 25 based on an image signal outputted from the electronic image pickup device. Meanwhile, the subject image is exposed on silver salt film 11 by the silver salt photographing device. An auxiliary line pattern for deciding composition stored in a ROM 37a is superimposed on the picked-up image displayed on the monitor 25 and displayed by an auxiliary line display device. When a photographing mode is set by a changeover switch 42, the auxiliary line pattern optimum for the set photographing mode is automatically selected and superimposed to be displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera for both silver halide photography and electronic imaging, and more particularly, to a camera for both silver halide photography and electronic imaging having an electronic display device for converting a subject image into an electric signal for display. About the camera.

[0002]

2. Description of the Related Art In particular, when a photographer wants to take a picture that requires a firm composition determination, such as macro (close-up) photography, copy photography, architectural photography, landscape photography, etc., for example, a single-lens reflex silver In salt cameras, the focusing screen, which is the image plane of the subject image in the viewfinder, is configured to be detachable and replaceable, and the photographer can replace it with a focusing screen formed by directly engraving composition auxiliary lines etc. as necessary. There are things. Specific focusing screens include a grid line type that is effective for copying and architectural photography shown in FIG. 9A, a memory line type that is effective for macro photography shown in FIG. 9B, and There is a golden division line type that is effective for obtaining a stable composition for landscape photography shown in FIG. 9C.

[0003] By the way, such a focusing screen has a structure in which a photographer replaces the focusing screen by himself / herself when necessary, which is very cumbersome and the operation is not easy.
Care must be taken in handling.

Therefore, a camera in a viewfinder display device in which a see-through type liquid crystal display element is arranged in the optical path of a viewfinder optical system, in which only an auxiliary line display for determining a necessary composition is displayed, has been proposed. No. 41543.

[0005]

By the way, in the above-mentioned camera, it is necessary to confirm the scale adjustment relating to the photographing magnification at the time of macro photographing, to check the distortion at the time of photographing a copy or a building, and to stabilize the photographing at the time of landscape photographing. In performing a composition determination operation that should be performed carefully, such as a composition determination, it is necessary to look at a small screen such as a finder or to place an eye at a predetermined position in order to look into the finder. Therefore, there is a problem that it is difficult to confirm the composition and the eye strain of the photographer increases.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention has been made in view of the above-described problems, and it is possible to easily display a subject image and a composition auxiliary line and to easily perform a composition determination operation. An object of the present invention is to provide an electronic imaging camera.

[0007]

That is, the present invention provides an electronic image pickup apparatus having an electronic image pickup element for converting a subject image into an electric signal, and a method for forming a picked-up image based on an image signal output from the electronic image pickup apparatus. Monitor means for displaying;
A silver halide photographing device that exposes the subject image to a silver halide film, an auxiliary line display device that superimposes and displays an auxiliary line pattern for composition determination on a captured image displayed on the monitor unit, and a photographing mode And a photographing mode setting means for setting a photographing mode. When a photographing mode is set by the photographing mode setting means, an optimal auxiliary line pattern for the photographing mode is automatically selected and superimposed and displayed. Features.

In the camera for both silver halide photography and electronic imaging according to the present invention, a subject image is converted into an electric signal by an electronic imaging device of the electronic imaging device, and a monitor is provided based on the image signal output from the electronic imaging device. The captured image is displayed on the means. On the other hand, in the silver halide photographing apparatus, the subject image is exposed to a silver halide film. In addition, an auxiliary line pattern for composition determination is superimposed and displayed by the auxiliary line display device so as to be superimposed on the captured image displayed on the monitor means. Then, the shooting mode is set by the shooting mode setting means. Here, when a shooting mode is set by the shooting mode setting means, an auxiliary line pattern optimal for the shooting mode is automatically selected and superimposed and displayed.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a single-lens reflex camera according to an embodiment of the present invention.

In FIG. 1, a photographing lens for forming a subject image is constituted by a positive lens 1a and a negative lens 1b with an aperture mechanism 2 interposed therebetween. That is, the aperture mechanism 2 is arranged in the taking lens.

A half mirror 3 is provided behind the negative lens 1b, and a part of the subject light reflected by the half mirror 3 is imaged on an area sensor 5 via an imaging lens system 4. You.

Further, behind the half mirror 3, there is provided a movable mirror 6 whose substantially central portion is a half mirror. A sub-mirror 7 is provided on the center rear surface of the movable mirror 6 so as to reflect the subject light downward.

In the direction of the reflection optical axis of the sub-mirror 7 and in a direction substantially perpendicular to the drawing, two optical systems 2
A separator optical system 8 for image separation is arranged.
A line sensor 9 is disposed at a position where the image of the subject is formed by the separator optical system 8. The sub-mirror 7, the separator optical system 8, the line sensor 9, and the like constitute a focus detection device using a known phase difference method.

A shutter 10 is disposed behind the movable mirror 6 as viewed from the taking lens. Further, a silver halide film 11 is disposed behind the shutter. When the movable mirror 6 is raised and the shutter 10 is opened, a subject image is formed on the silver halide film 11 and is exposed.

The shutter 10 is a known focal plane shutter, and is generally mounted on a camera having a single-lens reflex configuration. The focal plane shutter has a built-in spring (not shown) prior to exposure.
And the front curtain and the rear curtain are driven by the urging force of the spring.

On the base side surface of the silver halide film 11,
A recording layer (not shown) for magnetic information is formed, and a magnetic head 12 is arranged behind the silver halide film 11 so as to be in contact with the magnetic information recording layer. This magnetic head 12
Is to record various information magnetically,
1 has a function of reading magnetically recorded information, and the magnetic head drive unit 33 controls recording and reading of magnetic information.

The subject light reflected upward by the movable mirror 6 reaches the finder eyepiece optical system 15 via the focusing screen 13 and the pentaprism 14. Each of the lenses 1a and 1b of the photographing lens is provided with a lens driving unit 20 for a focus adjustment operation and a zooming operation. The focal length and the focal position of the photographing optical system 1 are changed by appropriately moving the positive lens 1a and the negative lens 1b in the optical axis direction by the lens driving unit 20, respectively.

The lens driving section 20 is provided for each of the lenses 1
It has an encoder (not shown) that generates a signal according to the movement of a and 1b. The CPU 37, which will be described later, performs a focusing operation based on the calculated drive amount and the encoder output.

The lens driving section 20 includes known driving sources such as an electromagnetic motor and an ultrasonic motor, and a driver circuit for controlling these driving sources. Further, the aperture mechanism 2 is provided with an aperture drive unit 21. The aperture mechanism 2 is driven by an aperture drive unit 21.
Similar to the lens drive unit 20, the aperture drive unit 21 includes drive sources such as known electromagnetic motors and ultrasonic motors, and driver circuits for controlling these drive sources.

The area sensor 5 includes an area sensor driving unit 2
The control unit 2 converts the formed subject image into an analog video signal and outputs the analog video signal to the signal processing circuit 23. The signal processing circuit 23 operates in response to a control signal (image capture instruction signal or display instruction signal) from the CPU 37 to be described later, and performs predetermined signal processing including conversion of the analog signal into a digital signal. is there.

A video memory 24 and a liquid crystal monitor 25 are connected to the signal processing circuit 23. The electronic image data processed by the signal processing circuit 23 is transferred to a video memory 24, stored, and then displayed as an electronic image on a liquid crystal monitor 25 serving as a monitor.

The signal processing circuit 23 includes a liquid crystal monitor 25
When an electronic image of a subject is displayed on the
It also has a function of superimposing the superimposed data transmitted from 7 on the screen of the liquid crystal monitor 25. At this time, the contents displayed in the superimposed manner are various auxiliary lines that assist in determining the composition.

Further, the signal processing circuit 23 also has a photometric function. The signal processing circuit 23 uses the signal of the area sensor 5 to measure the luminance of the subject, and after converting the digital value, converts it into photometric data to the CPU 37 via the data bus 30 via the data bus 30. Send.

The line sensor 9 is driven by a line sensor drive unit 26, and the movable mirror 6 is driven by a mirror drive unit 27. Further, the shutter 10 is driven by a shutter drive unit 31, and the silver halide film 11 and the magnetic head 12 are driven by a film drive unit 32 and a magnetic head drive unit 33, respectively.

The film drive unit 32 performs an idle feed winding operation for initial cueing of the film when the silver halide film 11 is loaded in the camera body, and also feeds the film to the next frame position after the completion of one frame. A winding operation for feeding the film, and further, a drive control for the whole film feeding relating to the rewinding operation after the completion of the photographing of all the frames of the silver halide film 11 or when a not-shown forced rewinding button is operated. Recording and reading of magnetic information by the magnetic head 12 are performed on the silver halide film 11.
This is executed during the feeding operation of.

Here, the upper lens drive unit 20, the aperture drive unit 21, the area sensor drive unit 22, the signal processing circuit 23, the video memory 24, the line sensor drive unit 26, the mirror drive unit 27, the shutter drive unit 31, the film drive The unit 32 and the magnetic head driving unit 33 are connected to each other by the data bus 30. Further, the data bus 30 includes a strobe control unit 35 connected to a strobe light emitting unit 34, a nonvolatile memory 36, a CPU 37, a circuit 26, and a switch input circuit 27.
a and a switch input unit 38 are connected.

Here, all the circuits in the system are controlled by the CPU 37, and data communication between the circuits is performed via the data bus 30. In the signal processing circuit 23, the processed electrons transfer the image data to the CPU 37 via the data bus 30 in response to a request from the CPU 37. The CPU 37 compresses the data, transfers the data to a nonvolatile memory 36 formed of an EEPROM or the like, and stores the data.

This non-volatile memory 36 is electrically rewritable, and retains its stored contents even when the power of the camera body is turned off, and is therefore used for recording electronic images.
The non-volatile memory 36 is configured to be freely attached to the camera body.

The ROM 37a in the CPU 37 stores
The data of various auxiliary line patterns superimposed on the electronic image of the subject displayed on the liquid crystal monitor 25 is stored.

The signal processing circuit 23 also has a photometric function. The signal processing circuit 23 uses the signal of the area sensor 5 to measure the luminance of the subject, converts the digital value into digital data, and outputs photometric data via the data bus 30. It is transmitted to the CPU 37.

The CPU 37 determines the brightness of the subject output from the signal processing circuit 23 and the film sensitivity detected by a film sensitivity detection circuit (not shown).
An aperture value and a shutter speed of the aperture mechanism 4 for obtaining an appropriate exposure are calculated. The drive of the shutter 10 is controlled at the calculated shutter speed.

The strobe light emitting section 34 is provided in the camera body for illuminating a subject. Then, the strobe light emitting unit 34 outputs a C signal via a strobe control unit 35.
The light emission is controlled by the PU 37. For example, when the CPU 37 determines that the subject luminance is lower than the predetermined luminance, the light is emitted as auxiliary light.

The switch input unit 38 includes, for example, a first
Release switch 40a and second release switch 40b
Operation switches such as a release switch 40 comprising a rewind switch 41 not shown and a rewind switch 41 interlocked with a rewind button not shown, and a changeover switch 42 for interlocking with a changeover button 53 shown in FIG. And multiple switches such as a switch for detecting the operation of the mechanical system are connected,
The state of each of these switches is determined by the CPU 3 as an electric signal.
7 is transmitted.

The first release switch 40a is
The switch is turned on in conjunction with the half-press operation of the release button 54, and the second release switch 40b is
The switch is turned on in conjunction with the full-press operation of No. 4.

By the way, in this embodiment, the above-mentioned optical finder is provided in addition to the liquid crystal monitor 25 for the object monitor, because the camera operator performs photographing while looking at the liquid crystal monitor 25. This is because, when taking a picture while looking through the optical viewfinder, the holding performance of the camera can be improved and the occurrence of camera shake or the like can be more easily prevented.

FIG. 2 is a perspective view showing the appearance of a single-lens reflex camera according to an embodiment of the present invention, as viewed from the back of the camera. In FIG. 2, a finder eyepiece 51 is disposed on the back of the camera body 50. Below the finder eyepiece 51, the above-described liquid crystal monitor 2 is provided.
5 is provided with a monitor display unit 52. Further, a switching button 53 for switching the display on the monitor display unit 52 is disposed in the left lateral direction of the monitor display unit 52. Further, a release button 54 is arranged on the upper surface of the camera body 50.

Next, the display switching operation and the display contents of the monitor display section 52 in the camera of one embodiment of the present invention will be described with reference to FIG. Immediately after the power switch for camera photography (not shown) is operated to supply power to the electric circuit, as shown in FIG. 3A, the monitor display unit 52 is in a state where nothing is displayed ( Screen 60a). In this state, if the switch button 53 is pressed once, the subject image is displayed on the monitor display section 52 as shown in FIG. 3B (screen 60b). This subject image is equivalent to the image observed from the finder eyepiece 51, and is sequentially updated as time passes.

Next, when the switching button 53 is pressed again, FIG.
As shown in (c), in addition to the subject image, the grid auxiliary line is superimposed on the subject image on the monitor display unit 52 (screen 60c). When the switch button 53 is pressed again, as shown in FIG. 3D, the scale auxiliary line is superimposed on the subject image on the monitor display unit 52 (screen 60d). .

Next, when the switching button 53 is pressed again, FIG.
As shown in (e), the monitor display unit 52 superimposes the golden division auxiliary line on the subject image (screen 60e). When the switch button 53 is pressed again, the monitor display section 52 returns to the display-off state shown in FIG. 3A (screen 60a).

As described above, every time the switch button 53 is operated, the display on the monitor display section 52 is sequentially switched so that the subject image is not displayed → the subject image is displayed / the superimpose is not present → the subject image is displayed / the grid assist The line is circulated as follows: line superimposition → subject image display / superimposition of scale auxiliary line → subject image display / golden division auxiliary line superimposition → no subject image display →.

Next, the operation of the camera according to the embodiment of the present invention will be described with reference to the flowcharts of FIGS. FIG. 4 is a flowchart for explaining the operation of the main routine of the camera, and FIG. 5 is a flowchart for explaining the operation of the display subroutine in FIG.

First, when the power of the camera is turned on, in step S1, all registers, input / output ports, and flags are initialized. Next, a subroutine "display" is executed in step S2. This subroutine "display" is a subroutine for displaying a subject image and an auxiliary line for determining a composition on the monitor display unit 52 constituted by the liquid crystal monitor 25, as described with reference to FIG. It will be described later.

When one display operation by the subroutine "display" in step S2 is completed, the process proceeds to step S3, where the state of the first release switch 40a is determined.
Here, if the first release switch 40a is off, that is, if the photographer has not operated the first release switch 40a, the process returns to step S2.

On the other hand, if the first release switch 40a is on, that is, if the photographer is operating the first release switch 40a, the process proceeds to step S4, and the subroutine "photometry" is executed. As described above, the photometric operation measures the subject brightness by the photometric function of the signal processing circuit 23.

When this subroutine "photometry" is completed,
Moving to step S5, a subroutine "focus adjustment" is executed. This focus adjustment operation drives the photographing optical system 1 to the in-focus position based on the interval between two images formed on the line sensor 9 as described above.

When the focus adjustment operation is completed, step S6
At this time, the state of the second release switch 40b is determined. Here, if the second release switch 40b is off, that is, if the photographer has not operated the second release switch 40b, the process proceeds to step S8.

In step S8, the state of the first release switch 40a is determined again. As a result, if the first release switch 40a is on, that is, if the photographer keeps operating the first release switch 40a, the process returns to step S6, and the second release switch 40b
Is repeatedly determined.

On the other hand, if the second release switch 40b is off in step S8, that is, if the photographer has not operated both the first and second release switches 40a and 40b, the process returns to step S2.

If it is determined in step S6 that the second release switch 40b is ON, the process proceeds to step S7, where the LCD monitor 25 is turned off, that is, nothing is displayed. Then, the process shifts to the shooting sequence of step S9, and the exposure shooting operation is executed.

Next, the detailed operation of the subroutine "display" in step S2 will be described with reference to FIG. First, in step S11, the state of the changeover switch 42 (the changeover button 53) is determined. here,
If the changeover switch 42 is off, that is, if the changeover button 53 is not operated, the process proceeds to step S14 to determine whether the value of the display counter is 0 or not. This display counter is for counting and storing how many times the switch button 53 has been operated after the camera is turned on, and the display mode of the liquid crystal monitor 25 is determined based on the count value. Will be done.

For example, if the count value of the display counter is 0, as shown in FIG.
Is turned off, and if the count value of the display counter is 1, the state shown in FIG. 3B is obtained, if the count value is 2, the state shown in FIG. Is displayed.

The display counter is cleared immediately after the power to the camera is turned on by the subroutine "initial setting" in step S1 in the flowchart of FIG. 4, and holds the contents until the power is turned on again.

In step S14, if the display counter is 0, the switching button 53 has not been operated yet, and the process returns to the main routine without displaying on the liquid crystal monitor 25.

On the other hand, if it is determined in step S11 that the changeover switch 42 is on, that is, the changeover button 53 is being operated, the process proceeds to step S12 and the value of the display counter reaches 4. Is determined. If the count value of the display counter has not reached 4 in step S12, the process proceeds to step S13. Then, after 1 is added to the value of the display counter, the process proceeds to a subroutine "image capture" in step S15. Also,
Even if the value of the display counter is not 0 in step S14, the process proceeds to the subroutine "image capture" in step S15.

The subroutine "image capture" in step S15 is a routine for outputting an image capture instruction signal to the signal processing circuit 23 so as to convert the subject image captured by the area sensor 9 into electronic image data.

When the image capturing of the subject image is completed in step S15, a subroutine "monitor display" is executed in step S16. In this subroutine "monitor display", the signal processing circuit 23 is controlled so that the subject image is displayed on the liquid crystal monitor 25 based on the electronic image data described above.
Output a display instruction signal.

Subsequently, steps S17, S18 and S2
At 0, the value of the display counter is determined. That is, in step S17, if the value of the display counter is 1, the display of the subject image on the liquid crystal monitor 25 is performed, but the superimposed display of the composition determination auxiliary line is not performed. Return to the main routine. If the value of the display counter is not 1 in step S17,
The process proceeds to step S18, where it is determined whether the value of the display counter is 2. If the value of the display counter is 2, the process proceeds to step 19, and the grid auxiliary line is superimposed and displayed on the subject image displayed on the liquid crystal monitor 25. Then, the process returns to the main routine.

The superimpose display is based on the RO
One auxiliary line pattern data is read out from the plurality of auxiliary line patterns stored in M37a, and the display is controlled based on this data by the signal processing circuit 23 to which the data is transmitted. .

If it is determined in step S18 that the value of the display counter is not 2, the process proceeds to step S20. Then, in step S20, it is determined whether or not the value of the display counter is 3. Here, the value of the display counter is 3
If so, the process proceeds to step S21, and the scale auxiliary line is superimposed and displayed.

If the value of the display counter is not 3 in step S20 (if the value of the display count is 4), the process proceeds to step S22, where the golden division auxiliary line is superimposed and displayed. . Then, the process returns to the main routine.

If the golden division auxiliary line is superimposed and displayed in step S12 (the value of the display counter is 4), the switch 42 is turned on again in step S11, that is, When the switch button 53 is operated, the process proceeds to step S12, and it is determined whether or not the value of the display counter has reached 4.

In this case, the count value of the display counter is 4
Therefore, the process proceeds to step S23, and the value of the display counter is reset to 0. Next, the process proceeds to step S24, where the display on the liquid crystal monitor 25 is turned off. Then, the process returns to the main routine.

As described above, in this embodiment,
In addition to the normal optical viewfinder, the composition auxiliary line is superimposed and displayed on the monitor screen provided outside the camera, and the structure auxiliary line can be easily selected according to the subject to be photographed. Or, it is possible to switch, so when performing a composition decision work that should be done carefully, there is no need to look at a small screen like a finder or to place the eyes in a predetermined position to look into the finder, and to draw the subject image and composition auxiliary line. In addition to being able to be displayed in an easy-to-see manner, the composition can be easily confirmed, and the eye strain of the photographer can be reduced.

In the above-described embodiment, the type of the composition determination auxiliary line to be superimposed is determined by operating the display switching button provided on the camera body. It is not limited to. For example, if the optimal auxiliary line is automatically selected according to the shooting mode, for example, by setting the scale auxiliary line in the macro shooting mode and the golden division auxiliary line in the landscape shooting mode, the photographer can It is possible to configure so as to eliminate the trouble of performing the selection operation each time.

FIG. 6 is a display example when the camera is set to the landscape photographing mode. Each time the switch button 53 is operated, the display on the monitor display section 52 is sequentially switched. That is, there is no display of the subject image shown in FIG. 6 (a) (screen 60a) → display of the subject image shown in FIG. 6 (b) (screen 60b) → the presence of the subject image shown in FIG. Spare imposition of auxiliary line (screen 60c) → FIG.
There is no subject image display shown in (a) (screen 60a), and so on.

FIG. 7 is a display example when the camera is set to the macro shooting mode. Each time the switch button 53 is operated, the display on the monitor display section 52 is sequentially switched.
That is, the subject image shown in FIG. 7A is not displayed (screen 61a) → the subject image shown in FIG. 7B is displayed (screen 61b) → the subject image shown in FIG.
Spare imposition of scale auxiliary line (screen 61c) → Fig. 7
There is no subject image display shown in (a) (screen 61a), and so on.

FIG. 8 is a flowchart for explaining another operation example of the subroutine "display" in step S2 of the flowchart of FIG. In the flowchart of FIG. 8, when the macro mode is selected, the superimposed display of the scale auxiliary line is automatically performed, and when the landscape mode is selected, the superimposed display of the golden division auxiliary line is automatically displayed. Is selected. Other operations are almost the same as those in the flowchart of FIG.

First, in step S31, the state of the changeover switch 42 (changeover button 53) is determined. here,
If the changeover switch 42 is off, that is, if the changeover button 53 is not operated, the process proceeds to step S34 to determine whether the value of the display counter is 0 or not. If the value of the display counter is 0, the process returns to the main routine; otherwise, the process proceeds to step S35.

In step S31, the changeover switch 42
If is turned on, the process proceeds to step S32, and it is determined whether or not the value of the display counter has reached 2. If it is determined in step S12 that the count value of the display counter has not reached 2, the process proceeds to step 33, where the count value is 2
If so, the process moves to step S43.

In step S33, 1 is added to the value of the display counter, and in the following step S35, a subroutine "image capture" is executed. Then, in step S36,
The subroutine "monitor display" is executed.

Subsequently, in step S37, the value of the display counter is determined. Here, if the value of the display counter is 1, the subject image is displayed on the liquid crystal monitor 25, but the superimposition display of the composition determination auxiliary line is not performed, and the process returns to the main routine. . On the other hand, if the value of the display counter is not 1 in step S37, the process proceeds to step S38, and it is determined whether the mode is the macro mode.

If the mode is the macro mode, the flow shifts to step S39 to display the scale auxiliary line in a superimposed manner, and then returns to the main routine. On the other hand, step S3
If it is determined in step 8 that the mode is not the macro mode, the process proceeds to step S40 to determine whether the mode is the landscape mode.

If it is determined in step S40 that the mode is the landscape mode, the flow shifts to step S41, where the golden division auxiliary line is superimposed and displayed. Then, the process returns to the main routine. If the mode is not the landscape mode in step S40, the process proceeds to step S42, and the grid auxiliary line is superimposed and displayed. Then, the process returns to the main routine.

If the value of the display counter is 2 in step S32, the process proceeds to step S43, and the value of the display counter is reset to 0. Next, the process proceeds to step S44, and when the display on the liquid crystal monitor 25 is turned off, the process returns to the main routine.

In this way, the superimposed display of the scale auxiliary line can be automatically performed according to the shooting mode. In addition, RO storing auxiliary line data
An EEPROM may be used instead of M so that the auxiliary line can be changed or new auxiliary line data can be added according to the photographer's preference.

According to the above embodiment of the present invention,
The following configuration can be obtained. (1) An electronic imaging device having an electronic imaging device for converting a subject image into an electric signal, monitor means for displaying based on the image signal output from the electronic imaging device, and exposing the subject image to a silver halide film A silver halide photographing device, an auxiliary line display device for superimposing and displaying an auxiliary line pattern for composition determination on the electronic image displayed on the monitor means, and a photographing mode setting means for setting a photographing mode of the camera When a shooting mode is selected by the shooting mode setting means, the auxiliary line display device automatically selects an optimal auxiliary line pattern for composition determination and superimposes and displays the selected auxiliary line pattern. A camera for both silver halide photography and electronic imaging.

(2) The camera according to (1), wherein the photographing mode is a macro photographing mode or a landscape photographing mode. (3) When the macro mode is selected as the photographing mode, the auxiliary line display device automatically selects an auxiliary line pattern of a memory auxiliary line type and superimposes and displays the auxiliary line pattern. The camera for both silver halide photography and electronic imaging according to (1).

(4) When the landscape mode is selected as the imaging mode, the auxiliary line display device automatically selects an auxiliary line pattern of the golden division auxiliary line type and superimposes and displays it. The camera for both silver halide photography and electronic imaging described in (1) above.

(5) When the photographing mode is neither the macro mode nor the landscape mode, an auxiliary line pattern of a grid auxiliary line type is automatically selected by the auxiliary line display device and superimposed and displayed. The camera for both silver halide photography and electronic imaging according to the above (1), characterized in that:

[0080]

As described above, according to the present invention, it is necessary to look at a small screen such as an optical viewfinder or to place an eye at a predetermined position in order to look into the viewfinder in a composition determination operation to be performed carefully. In addition, the subject image and the composition auxiliary line can be easily displayed on the monitor screen, the composition can be determined objectively, and eyestrain of the photographer can be reduced.

Further, since the composition assisting line can be easily selected or switched in accordance with the subject to be photographed, it is easy to confirm and determine the optimal composition. Further, since the composition line is automatically switched according to the photographing mode, even a beginner can perform photographing with an optimal composition line.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a single-lens reflex camera according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the appearance of the single-lens reflex camera according to the embodiment of the present invention, as viewed from the back of the camera.

FIG. 3 is a diagram showing a display switching operation and display contents of a monitor display unit 52 in the camera of one embodiment of the present invention.

FIG. 4 is a flowchart illustrating an operation of a main routine of the camera according to the embodiment of the present invention.

FIG. 5 is a flowchart illustrating an operation of a subroutine “display” in step S2 in FIG. 4;

FIG. 6 shows a display switching operation and display contents of a monitor display unit 52 in the camera of one embodiment of the present invention, and is a display example when the camera is set to a landscape shooting mode.

FIG. 7 shows a display switching operation and display contents of a monitor display unit 52 in the camera of one embodiment of the present invention, and is a display example when the camera is set to a macro shooting mode.

FIG. 8 is a flowchart illustrating another operation example of the subroutine “display” in step S2 of the flowchart in FIG. 4;

FIG. 9 shows a focusing screen, which is conventionally used in a single-lens reflex silver halide camera and is formed by engraving composition auxiliary lines which are detachable and are displayed in a viewfinder, and each of which has a different composition auxiliary line. It is a front view which shows a display type thing.

[Explanation of symbols]

 Reference Signs List 1 shooting optical system, 2 aperture mechanism, 3 half mirror, 5 area sensor, 6 movable mirror, 7 sub mirror, 9 line sensor, 10 shutter, 11 silver halide film, 12 magnetic head, 14 pentaprism, 20 lens drive unit, 21 Aperture drive unit, 22 area sensor drive unit, 23 signal processing circuit, 24 video memory, 25 LCD monitor, 26 line sensor drive unit, 27 mirror drive unit, 30 data bus, 31 shutter drive unit, 32 film drive unit, 33 magnetism Head drive section, 35 strobe control section, 36 non-volatile memory, 37 CPU, 37a ROM, 38 switch input section, 40a first release switch, 40b second release switch, 41 rewind switch, 42 changeover switch, 50 camera body, 51 Viewfinder eyepiece, 5 Monitor display unit, 53 switching button.

Claims (3)

[Claims] An electronic imaging device having an electronic imaging device for converting a subject image into an electric signal; a monitor for displaying a captured image based on an image signal output from the electronic imaging device; A silver halide photographing device for exposing the image to a silver halide film, an auxiliary line display device for superimposing and displaying an auxiliary line pattern for composition determination superimposed on the captured image displayed on the monitor means, and setting a photographing mode. A photographing mode setting unit, wherein when a photographing mode is set by the photographing mode setting unit, an optimal auxiliary line pattern for the photographing mode is automatically selected and superimposed and displayed. A camera for both silver halide photography and electronic imaging. 2. The photographing mode according to claim 1, wherein the photographing mode is a macro photographing mode or a landscape photographing mode.
The camera for both silver halide photography and electronic imaging described in 1. 3. When the macro shooting mode is set by the shooting mode setting means, an auxiliary line pattern of a scale auxiliary line type is automatically selected and superimposed and displayed by the auxiliary line display device. 2. The camera according to claim 1, wherein the camera is used for both silver halide photography and electronic imaging.