JP2001290197A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera provided with a finder by which the consumption of a battery is extremely reduced by supplying power by which a visual field frame is driven at a photographing time, a proper viewing angle is easily decided without being disturbed by the visual field frame when a photographer decides a desired composition by zooming operation and whose handleability is excellent. SOLUTION: This camera has a finder optical system provided with an eyepiece to observe an image formed by an objective lens through which a luminous flux from an object is made incident and a finder visual field frame changeover means A by which the visual field frame within a visual field observed though the eyepiece is switched, and also has a controlling means B by which the visual field frame of the finder visual field frame changeover means A is set as the first visual field frame when photographing operation is finished at the time of starting the photographing operation. Also, it has a means to give warning in the case that the visual field of the visual field frame is different from the first visual field frame. Display operation is performed at transmission type liquid crystal 41 constituting the finder visual field changeover means A in the case that a holding detecting means 55 and a finder detecting means 56 perform detection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera provided with a finder.

[0002]

2. Description of the Related Art Conventionally, when a photographer performs photographing at a desired print size, a 135-type camera can photograph a standard size and a panoramic size by switching a photographing screen switching button of the camera. In the case of an APS camera, it is possible to shoot in each of the classic size, the high definition size, and the panorama size.

When the photographing screen switching button is switched, the field of view in the viewfinder is also switched according to the photographing angle of view, and the photographer performs framing accordingly. As a method of switching the field frame, a transmission liquid crystal, a mask member, and the like are known.

[0004]

However, beginners who are unfamiliar with shooting, once set a preferred angle of view in accordance with the shooting scene, take a picture, and then forget to cancel it, Due to the contrast of the subject, the user notices that he or she has taken a picture with the wrong print size after printing without noticing the field of view that is set because the brightness and hue are similar to the field of view in the viewfinder. there is a possibility. It is known that this tendency is remarkably likely to occur when the angle of view of the classic size and the high definition size of the APS camera is small.

When the photographer decides a desired composition by zooming, if the visual field frame is kept displayed, the displayed visual field frame becomes an obstacle, making it difficult to determine an appropriate angle of view, thus increasing usability. It gets bad.

Further, in a finder using a field frame display by liquid crystal, it is necessary to always supply power to the drive circuit of the liquid crystal for the field frame display, and this power supply causes battery consumption. I was

The present invention has been made in view of such circumstances, and once a photographer sets a desired angle of view and forgets to release it, or erroneously notices the field of view frame due to the contrast of the subject. It is an object of the present invention to provide a camera capable of preventing shooting at a reduced print size.

Another object of the present invention is to provide a camera capable of minimizing battery consumption by supplying electric power for driving the field frame at the time of photographing and capable of easily operating the field frame. And

Another object of the present invention is to provide a camera which is easy to use and easy to determine an appropriate angle of view without obstructing a visual field frame when a photographer decides a desired composition by a zoom operation. I have.

[0010]

Means for Solving the Problems In order to solve the above problems and achieve the object, the present invention has the following constitution.

According to a first aspect of the present invention, there is provided a finder optical system including an objective lens for receiving a light beam from a subject, an eyepiece for observing an image formed by the objective lens, and observation through the eyepiece. Finder field frame switching means capable of switching at least a first field frame and a second field frame in a field of view to be obtained, and when the photographing operation is started, the finder field frame switching means A camera, wherein a field frame is set to the first field frame. ].

According to the first aspect of the invention, it is possible to switch the field frame between at least the first field frame and the second field frame. At the start of the photographing operation, the field frame is set to the first field frame. For example, if the first field-of-view frame is set to a print size at which the user normally shoots frequently, the user may set the desired angle of view once, forget to release the image, or forget to release the image, or change the contrast of the subject. Therefore, even if the photographing is performed without noticing the field of view, the photographing can be performed at the print size that is usually photographed frequently.

According to a second aspect of the present invention, there is provided a finder optical system including an objective lens for receiving a light beam from a subject, an eyepiece for observing an image formed by the objective lens, and observation through the eyepiece. Finder field frame switching means capable of switching at least a field frame within a field of view to be switched between a first field frame and a second field frame. When a series of photographing operations is completed, the finder field The camera is characterized in that the field of view of the frame switching means is set to the first field of view.

According to the second aspect of the present invention, it is possible to switch the field frame between at least the first field frame and the second field frame. Since the frame is set to the first field of view, for example, the first
If you set the field of view to a print size that users usually shoot frequently, set the desired angle of view once and forget to release it after shooting, or shoot without notice of the field of view due to the contrast of the subject Even if it happens, it is possible to shoot at a print size that is usually shot frequently.

According to a third aspect of the present invention, there is provided the present invention, wherein the finder field frame switching means is a transmission type liquid crystal arranged near an image forming plane of the finder optical system. Item 3. The camera according to Item 2. ].

According to the third aspect of the present invention, the field frame is switched by the transmission type liquid crystal arranged near the image forming plane of the finder optical system, and the structure is compact.

According to a fourth aspect of the present invention, there is provided the camera according to the third aspect, wherein the finder field frame switching means switches the field frame by changing a transmission state of the transmissive liquid crystal. . ].

According to the fourth aspect of the present invention, by switching the viewing frame by changing the transmission state of the transmission type liquid crystal, it is possible to reliably notify the switching with a compact structure.

According to a fifth aspect of the present invention, there is provided a finder optical system including an objective lens for receiving a light beam from a subject, an eyepiece for observing an image formed by the objective lens, and observation through the eyepiece. Finder field frame switching means capable of switching at least a field frame within a field of view to be switched between a first field frame and a second field frame, and at a predetermined time, the field of view of the field frame is changed to the first field of view. A camera that issues a warning when the frame is different from the frame. ].

According to the fifth aspect of the invention, it is possible to switch the field frame between at least the first field frame and the second field frame, and at a predetermined time, the field of the field frame becomes the second field frame. If the first field of view is different from the first field of view, a warning is issued. For example, if the first field of view is set to a print size that the user normally shoots frequently, the user sets the desired angle of view once and then cancels the shooting. For example, it is possible to prevent the user from forgetting and taking a picture without noticing the field of view due to the contrast of the subject.

According to a sixth aspect of the present invention, there is provided an image forming apparatus comprising: a selecting means having an instructing portion capable of selectively switching the visual field frame and indicating a selected visual field frame. The camera according to. ].

According to the sixth aspect of the present invention, it is possible to notify the photographer of the selected field frame by indicating the selected field frame.

According to a seventh aspect of the present invention, there is provided the camera according to the fifth aspect, wherein the warning by the warning means is performed when the release button is half-pressed. ].

According to the seventh aspect of the present invention, when the release button is half-pressed, it is possible to reliably warn that the field of view of the field frame is different from the first field frame before photographing.

According to an eighth aspect of the present invention, there is provided the electronic apparatus according to the fifth aspect, wherein the warning means blinks the visual field frame.
The camera according to. ].

According to the eighth aspect of the present invention, by blinking the field frame, it is possible to reliably warn that the field of view of the field frame is different from the first field frame.

According to a ninth aspect of the present invention, there is provided the present invention, wherein the finder field frame switching means is a transmission type liquid crystal arranged near an image forming plane of the finder optical system. Camera. ].

According to the ninth aspect of the present invention, the field frame is switched by the transmission type liquid crystal arranged near the image forming plane of the finder optical system, so that a compact structure is provided.

According to a tenth aspect of the present invention, there is provided the camera according to the ninth aspect, wherein the finder field frame switching means switches the field frame by changing a transmission state of the transmissive liquid crystal. . ].

According to the tenth aspect of the present invention, by changing the transmission state of the transmission type liquid crystal to switch the field frame, it is possible to reliably notify the switching with a compact structure.

According to an eleventh aspect of the present invention, there is provided a finder optical system including an objective lens for receiving a light beam from a subject, an eyepiece for observing an image formed by the objective lens, and observation through the eyepiece. A transmission type liquid crystal which is arranged in a visual field to be displayed and is capable of displaying a predetermined visual field state, display means for causing the transmission liquid crystal to perform a display operation, and holding detection means for detecting a holding state of the camera, A camera characterized in that the display means causes the transmissive liquid crystal to perform a display operation when the holding detection means has performed detection. ].

According to the eleventh aspect of the present invention, when the holding detecting means detects, the transmissive liquid crystal is displayed and brought into a predetermined visual field state, and electric power for driving the visual field frame during photographing is supplied. By doing so, battery consumption can be reduced as much as possible.

According to a twelfth aspect of the present invention, there is provided a finder optical system including an objective lens for receiving a light beam from a subject, an eyepiece for observing an image formed by the objective lens, and observation through the eyepiece. A transmissive liquid crystal arranged in a visual field to be displayed and capable of displaying a predetermined visual state, display means for causing the transmissive liquid crystal to perform a display operation, and a viewfinder for detecting that a photographer of the camera is looking through the viewfinder A camera, comprising: a detection unit, wherein when the finder detection unit is detecting, the display unit causes the transmission type liquid crystal to perform a display operation. ].

According to the twelfth aspect of the present invention, when it is detected that the photographer of the camera is looking into the finder, the transmission type liquid crystal is displayed and brought into a predetermined visual field state, so that the photographing is performed at the time of photographing. By supplying electric power for driving the viewing frame, battery consumption can be reduced as much as possible.

According to a thirteenth aspect of the present invention, there is provided a finder optical system including an objective lens for receiving a light beam from a subject, an eyepiece for observing an image formed by the objective lens, and observation through the eyepiece. A transmission type liquid crystal arranged in a visual field to be displayed and capable of displaying a field frame corresponding to a shooting angle of view, control means for displaying the visual field state on the transmission type liquid crystal, and a zoom lens, the zoom lens comprising: Wherein when the zooming operation is performed, the viewing state of the transmissive liquid crystal is changed and displayed. ].

According to the thirteenth aspect, when the zoom operation of the zoom lens is performed, the viewing state of the transmission type liquid crystal is changed and displayed, so that the viewing angle can be changed according to the preference at the time of shooting. You can quickly switch to the size of the frame.

According to a fourteenth aspect of the present invention, there is provided a feature that when the zoom operation of the zoom lens is performed, the transmission type liquid crystal does not display a field frame corresponding to the photographing angle of view. The camera according to claim 13. ].

According to the fourteenth aspect of the invention, when the zoom operation of the zoom lens is performed, the field frame display corresponding to the photographing angle of view is not performed.
The photographer can perform appropriate framing without hampering the view frame in the viewfinder when determining the composition.

The invention according to claim 15 is characterized in that, when the zooming operation of the zoom lens is performed, a field frame display corresponding to the shooting angle of view by the transmission type liquid crystal is blinked and displayed. The camera according to claim 13, wherein: ].

According to the fifteenth aspect, when the zoom operation of the zoom lens is performed, the field frame display corresponding to the photographing angle of view is blinked and displayed, so that the photographer can compose the composition. When deciding, appropriate framing can be performed by reliably recognizing the field frame in the viewfinder.

[0041]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the camera according to the present invention will be described in detail with reference to the drawings.

1 to 5 show a camera to which the present invention is applied. FIG. 1 is a perspective view of the camera, FIG. 2 is a cross-sectional view showing a finder, and FIG. 3 is a transmission type liquid crystal and driving of the transmission type liquid crystal. FIG. 4 is a diagram showing switching of the visual field frame, and FIG. 5 is a diagram showing a selecting means having an instruction unit for designating the selected visual field frame.

An APS-compatible camera 1 to which the present invention is applied has a zoom lens 2 mounted on the front of the camera and a finder optical system 3. The finder optical system 3 is configured such that a subject light beam incident on the finder window 30 is guided to the finder eyepiece 31 through an optical path indicated by a dashed line. The finder optical system 3 has a variable power optical system that changes the finder image in accordance with the change of the focal length of the zoom lens 2 by the zooming switch 4.

A release button 5 is provided on the top of the camera, and a finder field frame switching button 6 is provided on the back of the camera. In response to the photographer operating the finder field frame switching button 6 to switch to the desired print type among the classic size, high definition size, and panorama size, the field of view inside the finder optical system 3 is also switched as described later.

As shown in FIG. 2, the finder optical system 3 is disposed in a finder block 32, and includes an objective lens 33 and lenses 34, 35 and 3 constituting a variable power optical system.
6, a first prism 37 that reflects and emits the subject light flux emitted from the variable power optical system three times, and a first prism 37
A second prism 38 for reflecting the subject light flux emitted from the optical path in the illustrated optical path to invert the subject image, and a second prism 37
Eyepiece 3 for observing the subject image emitted from the camera
9 are provided.

A flat plate 40 having an aperture 40a and a field opening 40b is provided in front of the first prism 37 in the camera. The aperture 40a blocks peripheral light that may cause ghost or stray light in the subject light beam incident on the finder device, and the rectangular visual field opening 40b regulates the subject light beam passing through the aperture 40a to a predetermined visual field size. . A light shielding portion 40 is provided in a region between the stop 40a and the field opening 40b.
c is formed. The flat plate 40 is the finder block 3
2 is attached.

In this finder device, the finder window 3
The object light flux entering the finder optical system 3 from 0 passes through the objective lens 33 and the variable power lenses 34 to 36,
At 0a, the ambient light is blocked and enters the first prism 37. This subject light flux passes through the transmission type liquid crystal 41 from the field opening 40 b and enters the second prism 38. The subject light that has entered the second prism 38 is inverted and enters the eyepiece 39, and a subject image corresponding to the focal length of the zoom lens 2 is observed from the finder eyepiece 31.

The transmission type liquid crystal 41 fixed to the flat plate 40 and a circuit connected to the transmission type liquid crystal 41 will be described with reference to FIG.

The CPU 50 constitutes a control means B for integrally controlling the operation of the camera. In addition to the drive control of the transmission type liquid crystal 41, photometry, distance measurement, drive control of the zoom lens 2, shutter open / close drive, strobe condenser The CPU 50 also controls the charging and light emission timing of the camera and the drive control of the film winding motor.

Each time the release button 5 is pressed down, a switching signal is sent to the CPU 50 each time the release switch 5a for generating a half-press signal S1, a release signal S2 and a finder field frame switching button 6 are pressed. A finder field frame changeover switch 6a for outputting, a power switch 51 linked to a barrier switch or a main switch, and a field frame display driver 52 for driving the transmission type liquid crystal 41 are connected. The field frame display driver 52 constitutes display means C for performing a display operation on the transmission type liquid crystal 41.

The CPU 50 is connected to a holding detecting means 55 for detecting the holding state of the camera and a finder detecting means 56 for detecting that the photographer of the camera is looking into the finder. As shown in FIG. 1, the holding detecting means 55 includes a pressure detecting sensor provided in a holding section of the camera. Further, the finder detecting means 56 is provided with a reflection type optical sensor provided in the finder eyepiece 31 (for example, a light emitting element made of an infrared LED and a light receiving element made of a PSD are provided in the finder or in the vicinity of the finder, When the photographer is looking through the finder, the light emitted from the infrared LED is reflected by the photographer's eyeball and received by the PSD to be detected.

When the holding detection means 55 and the finder detection means 56 are detecting, the transmission liquid crystal 41 is displayed by the field frame display driver 52. As described above, when the holding detection is performed, or when the finder detection is performed, the transmission type liquid crystal 41 is displayed and brought into a predetermined visual field state, and by supplying power for driving the visual field frame at the time of shooting, Battery consumption can be reduced as much as possible.

The CPU 50 has a zoom switch 5
7 is connected, and when the zoom switch 57 is turned on, the zoom motor 58 is driven to operate the zoom lens 2.

As the transmission type liquid crystal 41, for example, a polymer dispersion type is used. 9 constituting the transmissive liquid crystal 41
Each of the display segments 41 a to 41 i is controlled by the CPU 50 via the driver 52. That is, as a voltage is applied between a plurality of sets of electrodes forming each of the display segments 41a to 41i, the display segment to which the voltage is applied is in a transmissive state. Conversely, a display segment to which no voltage is applied is in a cloudy state.

Hereinafter, the turbid state and the transmission state will be described as display states.

The display state of the transmission type liquid crystal 41 before the release operation is performed by the photographer will be described. When the power switch 51 of the camera is OFF, no voltage is applied to any of the segments of the transmissive liquid crystal 41, and therefore, the display segments 41a to 41i are not applied.
Are all turbid.

When the power switch 51 of the camera is ON, the CPU 50 calls up the field frame information stored in the memory 60, and based on this information, transmits the transmission type liquid crystal 41.
Control the display state of. For example, if the field frame information stored in the memory is the information associated with the classic size, the display segments 41b, 41e, and 41h are set to the transparent state, and the field frame shown in FIG. Then, the photographer sets the viewfinder frame switch 6
When a is pressed once, the CPU 50 changes the visual field frame information in the memory to the information associated with the HDTV size, and further sets all of the display segments 41a to 41i in the transparent state to display the visual field frame information shown in FIG. become. Similarly, when pressed once more, the field of view frame information in the memory is changed to information associated with the panorama size, and the display segments 41d, 41e, and 41f are made to be in a transparent state.
The field of view shown in FIG. Then, when the button is pressed one more time, the above-described processing is performed and the screen returns to the field frame shown in FIG.

As described above, the finder field frame switching means A capable of switching the field frame within the field of view observed through the eyepiece lens 39 to the first, second, and third field frames.
The finder field frame switching means A includes a transmission type liquid crystal 4 disposed near the image forming plane of the finder optical system 3.
By changing the transmissive state of the transmissive liquid crystal 41, the field frame is switched to a desired print type among the first classic size, the second high-vision size, and the third panoramic size.

The field-of-view frame information stored in the memory 60 is set to a classic size at which the user normally frequently shoots when the shooting operation is started, for example, when the power is turned on, or when a series of shooting operations is completed. Associated information (first
Field of view). For this reason, after the user sets and shoots the information associated with the high-definition size or the information associated with the panorama size (the second field of view) according to the scene, the setting is released to the information associated with the classic size. Even if you forget or you may shoot without noticing the field of view due to the contrast of the subject and the surrounding brightness, you can shoot in the classic size that you usually shoot frequently, besides this embodiment, Set the information associated with the HD size to the first field of view,
Setting the other as the second field frame does not depart from the gist of the present invention.

In this embodiment, since the first field frame is set to the classic size, the field of view of the field frame differs from that of the first field frame at a predetermined point in time (for example, when the release is half-pressed). If the field of view is set, a warning means for giving a warning is provided, and this warning means is configured to blink the field frame, so that the photographer can ensure that the field of view of the field frame is the first. Can be recognized at the time of release that is set to a different field of view.

As described above, when the visual field of the visual field frame is different from the first visual field frame at a predetermined time, a warning is issued,
For example, if the first field of view is set to a print size at which the user normally shoots frequently, the user may set the desired angle of view once and forget to release it after shooting, or may notice the field of view due to the contrast of the subject. It is possible to prevent the photographing without being performed.

Further, there is provided a selecting means 59 having indicating sections 59a, 59b, 59c for indicating the selected visual field frame. As shown in FIG. 5, the selecting means 59 emits light such as an LED in a finder. Provided by means. Every time the finder field frame switching button 6 is pressed, the indication section 59a switches to the classic size instruction, the indication section 59b switches to the Hi-Vision size instruction, and the indication section 59c switches to the panorama size instruction to turn on and instruct the field frame to select the photographer. You can tell which field frame you are in.

When the zoom operation of the zoom lens 2 is being performed, the transmission type liquid crystal 41 is changed in the visual field state and displayed, so that in this embodiment, the high vision of the visual field frame shown in FIG. By changing the size, it is possible to quickly switch to the size of the field frame according to the preference at the time of shooting.

When the zoom operation of the zoom lens 2 is performed, the display of the field frame corresponding to the photographing angle of view by the transmission type liquid crystal 41 is not performed. Suitable framing can be performed without disturbing the visual field frame.

Alternatively, when the zoom operation of the zoom lens 2 is performed, the field frame display corresponding to the shooting angle of view of the transmission type liquid crystal 41 may be displayed by blinking. Thus, appropriate framing can be performed by reliably recognizing the field frame in the viewfinder.

Next, the above operation by the CPU 50 will be described with reference to FIG. FIG. 6 is a photographing control program by the CPU 50. The CPU 50 controls a series of photographing operations such as photometry, distance measurement, shutter opening and closing, and film winding in response to the release button 5 being pressed down by the photographer.

When a reset is applied in step a1, initialization is performed. In step a2, when the power switch 51 is turned on by operating a barrier switch or a main switch,
The field frame information in the memory 60 is initialized to the information associated with the classic size, the driving of the field frame display driver 52 is started in step a3, the display operation of the transmissive liquid crystal 41 is started, and the field frame is displayed. Is set to the classic size shown in FIG.

As described above, after the power is turned on, the field of view is set to the classic size.
After setting the size to the high-definition size shown in (b) or the panorama size shown in FIG.
Even if shooting is performed without noticing the field of view, shooting can be performed at a print size that is normally frequently shot.

When the field frame in the viewfinder is initialized to the classic size, after a predetermined time (about 5 seconds)
In step a5, the display operation of the transmission type liquid crystal 41 is stopped to turn off the display of the field frame, and the display is set to the classic size. When the display is turned off and the detection of the holding detection unit 55 is performed in step a6,
If the finder detection means 56 has been detected in step a7, the display operation of the transmission type liquid crystal 41 is started by the field frame display driver 52 in step a8, and the detection of the holding detection means 55 and the finder detection means 56 is stopped. If not, the process proceeds to step a5, and the display of the field frame remains OFF. When the holding detecting means 56 is detected in this way, the transmission type liquid crystal 41 is displayed and brought into a predetermined visual field state, and the fact that the photographer of the camera is looking through the finder is detected by the finder detecting means 56. In such a case, the transmission type liquid crystal is displayed and brought into a predetermined visual field state, and power for driving the visual field frame during photographing is supplied, so that the consumption of the battery can be reduced as much as possible.

In step a9, the zoom switch 57 is turned on.
Then, the display of the field frame is stopped in step a10, the zoom motor 58 is driven to activate the zoom lens 2 in step a11, and the zoom switch 57 is activated in step a12.
When the zoom switch 57 is turned off, the driving of the zoom motor 58 is stopped in step a13, and the display of the field frame is restarted in step a14. As described above, when the zoom operation of the zoom lens 2 is performed, the display operation of the transmission type liquid crystal 41 is not performed, so that the photographer can determine the composition without being disturbed by the field frame in the viewfinder. Appropriate framing can be performed.

When the finder field frame changeover switch 6 is pressed in step a15, the field frame information in the memory 60 is updated every time the number of presses is increased, and the display of the field frame based on the field frame information is performed in step a16. Done, step a
Then, the flow advances to step S17 to wait for S1 in which the release button 5 is half-pressed.
If is not switched, step a17
Then, the flow waits for S1 in which the release button 5 is half-pressed.

When the release button 5 is not half-pressed within a predetermined time in step a17, when the holding detecting means 55 has been detected in step a18, and when the finder detecting means 56 has been detected in step a19. Then, the process goes to step a9 to wait for the operation of the zoom switch 57. If the holding detecting means 55 and the finder detecting means 56 are not detected, the display of the visual field frame is turned off in step a20, and step a5 is performed.
Then, the control waits for the detection by the holding detecting means 55 and the finder detecting means 56.

If the release button 5 is half-pressed in step a17, it is determined whether the field frame set in step a21 is the classic size by checking the field frame information in the memory 60 in association with the classic size. And if the information is associated with the classic size, the process proceeds to step a23 to perform distance measurement,
If photometry is performed and the size is a high-definition size or panorama size other than the classic size, the process proceeds to step a22 to blink the field of view (in the case of information associated with the panorama size), By concealing (information associated with the high-definition size), it is possible to reliably warn the photographer that the field of view of the field frame is different from the classic size field frame.

In addition to the present embodiment, the way of giving a warning is, as shown in FIG. 5, in a finder such as a selecting means 59 having indicating sections 59a, 59b and 59c for indicating a selected visual field frame. Alternatively, a light emitting means such as an LED may be separately provided to display characters or symbols, or the light emitting means itself may be lit or blinked. In particular, in the case of the high-vision size, since there is usually no display of the visual field frame as shown in FIG. 4B, it is easier for the photographer to recognize the warning by blinking the LED.

When the field of view of the field frame is different from the initially set first field frame of the classic size at a predetermined point in time, a warning is issued so that, for example, the user normally switches the first field frame frequently. By setting the print size to be photographed, it is possible to prevent the photographer from forgetting to release the image after setting the desired angle of view once and not ignoring the field of view due to the contrast of the subject.

At step a24, it is determined whether or not the release button 5 is pressed and S2 is ON. If the release button 5 is not pressed, the half-press signal S1 is determined at step a25.
Is also turned off, the process proceeds to step a5.

When the release button 5 is pressed in step a24 to turn on the release signal S2, the shutter is driven in step a26, the film is wound up in step a27, and the field frame setting information is recorded on the film in step a28. After the photographing is completed in step a29, the display of the visual field frame is returned to the default classic size, and the process proceeds to step a5.

In this embodiment, the APS-compatible camera is switched to the preferred print type among the classic size, the high definition size, and the panorama size of the first, second, and third field frames. In a camera, the present invention can be similarly applied to a camera that switches between a standard print type of the first and second field frames and a print type of a desired one of panoramic sizes.

After the power is turned on and after the photographing is completed, the field frame of the finder field frame switching means A is set to the first field frame, and the first field frame is set to the classic size. Alternatively, the size may be a high-definition size, a panorama size, or the like.

[0080]

As described above, according to the first aspect of the present invention, at the start of the photographing operation, the field of view is set to the first field of view. If you set the print size for shooting, once you set the desired angle of view and forget to release it, or because of the contrast of the subject, you may not be aware of the field of view frame You can take pictures at the print size you want to take.

According to the second aspect of the present invention, when a series of photographing operations is completed, the field of view is set to the first field of view. If you set the size, once you set the desired angle of view and shoot, forget to cancel it, or because of the contrast of the subject, you may not notice the field of view frame, but usually shoot frequently You can shoot in print size.

According to the third aspect of the present invention, the field frame is switched by the transmission type liquid crystal arranged near the image forming plane of the finder optical system, and the structure is compact.

According to the fourth aspect of the present invention, by switching the field frame by changing the transmission state of the transmission type liquid crystal, it is possible to notify the switching reliably with a compact structure.

According to the fifth aspect of the present invention, if the visual field of the visual field frame is different from the first visual field frame at a predetermined point in time, a warning is issued so that, for example, the first visual field frame is usually frequently used by the user. By setting the print size to be photographed, it is possible to prevent the photographer from forgetting to release the image after setting the desired angle of view once and not ignoring the field of view due to the contrast of the subject.

According to the sixth aspect of the present invention, by instructing the selected field frame, the photographer can be notified of the selected field frame.

According to the seventh aspect of the present invention, when the release button is half-pressed, it is possible to reliably warn that the field of view of the field frame is different from the first field frame before photographing.

According to the eighth aspect of the present invention, it is possible to reliably warn that the field of view of the field frame is different from the first field frame by blinking the field frame.

According to the ninth aspect of the present invention, the field frame is switched by the transmission type liquid crystal arranged near the image forming plane of the finder optical system, and the structure is compact.

According to the tenth aspect of the present invention, by switching the viewing frame by changing the transmission state of the transmission type liquid crystal, it is possible to reliably notify the switching with a compact structure.

According to the eleventh aspect of the present invention, when the holding detecting means detects the state, the transmission type liquid crystal is displayed and brought into a predetermined visual field state, and electric power for driving the visual field frame at the time of photographing is supplied. In addition, battery consumption can be reduced as much as possible.

According to the twelfth aspect of the present invention, when it is detected that the photographer of the camera is looking through the finder, the transmission type liquid crystal is displayed and brought into a predetermined visual field state, and the visual field frame is set at the time of photographing. By supplying the driving power, battery consumption can be reduced as much as possible.

According to the thirteenth aspect of the present invention, when the zoom operation of the zoom lens is being performed, the viewing state of the transmissive liquid crystal is changed and displayed, so that the size of the viewing frame according to the preference at the time of shooting can be obtained. You can switch quickly.

According to the fourteenth aspect of the invention, when the zoom operation of the zoom lens is performed, the display of the field of view corresponding to the angle of view is not performed, so that the photographer can determine the composition. Thus, appropriate framing can be performed without being disturbed by the field frame in the viewfinder.

According to the fifteenth aspect of the present invention, when the zoom operation of the zoom lens is performed, the field frame display corresponding to the photographing angle of view is blinked and displayed, so that the photographer can determine the composition. Thus, appropriate framing can be performed by reliably recognizing the field frame in the viewfinder.

[Brief description of the drawings]

FIG. 1 is a perspective view of a camera.

FIG. 2 is a sectional view showing a finder.

FIG. 3 is a diagram showing a transmission type liquid crystal and driving of the transmission type liquid crystal.

FIG. 4 is a diagram showing switching of a field frame.

FIG. 5 is a diagram showing a selection unit having an instruction unit for designating a selected visual field frame.

FIG. 6 is a photographing operation control program by a CPU.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 camera 2 zoom lens 3 finder optical system 4 zooming switch 5 release button 6 finder field frame switching button 30 finder window 31 finder eyepiece 41 transmission liquid crystal 55 holding detection means 56 finder detection means A finder field frame switching means B control means

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Hiroshi Kibayashi 1 Sakuracho, Hino-shi, Tokyo Konica Corporation (72) Inventor Teruhiko Yasui 2970 Ishikawacho, Hachioji-shi, Tokyo In-house Konica Corporation (72) Inventor Yukie Shino 2970 Ishikawacho, Hachioji-shi, Tokyo Konica Corporation F-term (reference) 2H018 AA06 BA00 BA01 2H102 AA41 BA03 BA06 BB09 CA32 CA34

Claims (15)

[Claims] 1. A finder optical system including an objective lens for receiving a light beam from a subject, an eyepiece for observing an image formed by the objective lens, and a field frame in a field of view observed through the eyepiece. Finder field frame switching means capable of switching between at least a first field frame and a second field frame, wherein at the start of a photographing operation, the field frame of the finder field frame switching means is set to the first field of view. A camera characterized by being set in a frame. 2. A finder optical system comprising an objective lens for receiving a light beam from a subject, an eyepiece for observing an image formed by the objective lens, and a field frame in a field of view observed through the eyepiece. Finder field frame switching means capable of switching between at least a first field frame and a second field frame, wherein when a series of photographing operations is completed, the field frame of the finder field frame switching means is set to A camera, wherein the camera is set to a first visual field frame. 3. The camera according to claim 1, wherein the finder field frame switching means is a transmission type liquid crystal arranged near an image forming plane of the finder optical system. 4. The camera according to claim 3, wherein the finder field frame switching means switches the field frame by changing a transmission state of the transmission type liquid crystal. 5. A finder optical system including an objective lens for receiving a light beam from a subject, an eyepiece for observing an image formed by the objective lens, and a field frame in a field of view observed through the eyepiece. A finder field frame switching means capable of switching between at least a first field frame and a second field frame; and a warning if the field of view of the field frame is different from the first field frame at a predetermined time. And a warning means for performing the warning. 6. The camera according to claim 5, further comprising a selection unit capable of selectively switching the field of view and having an instruction unit for indicating the selected field of view. 7. The camera according to claim 5, wherein the warning by the warning means is performed when the release button is half-pressed. 8. The camera according to claim 5, wherein said warning means blinks said field frame. 9. The camera according to claim 5, wherein said finder field frame switching means is a transmission type liquid crystal arranged near an image forming plane of said finder optical system. 10. The camera according to claim 9, wherein said finder field frame switching means switches said field frame by changing a transmission state of said transmission type liquid crystal. 11. A finder optical system including an objective lens for receiving a light beam from a subject, an eyepiece for observing an image formed by the objective lens, and a finder optical system disposed in a field of view observed through the eyepiece.
A transmission type liquid crystal capable of displaying a predetermined visual field state; display means for causing the transmission type liquid crystal to perform a display operation; and holding detection means for detecting a holding state of a camera, wherein the detection of the holding detection means is performed. A display operation of the transmissive liquid crystal by the display means. 12. A finder optical system comprising: an objective lens for receiving a light beam from a subject; an eyepiece for observing an image formed by the objective lens; and a finder optical system arranged in a field of view observed through the eyepiece.
A transmission type liquid crystal capable of displaying a predetermined visual field state; display means for causing the transmission type liquid crystal to perform a display operation; and finder detection means for detecting that a photographer of the camera is looking into the finder, A camera characterized in that the display means causes the transmissive liquid crystal to be displayed when the finder detection means has performed the detection. 13. A finder optical system comprising: an objective lens for receiving a light beam from a subject; an eyepiece for observing an image formed by the objective lens; and a finder optical system arranged in a field of view observed through the eyepiece.
A transmission type liquid crystal capable of displaying a field frame corresponding to a shooting angle of view; control means for displaying the visual field state on the transmission type liquid crystal; and a zoom lens, wherein a zoom operation of the zoom lens is performed. A camera characterized in that, at the time, the visual field state of the transmissive liquid crystal is changed and displayed. 14. The camera according to claim 13, wherein when the zoom operation of the zoom lens is performed, a field frame display corresponding to the photographing angle of view is not performed by the transmission type liquid crystal. 15. The apparatus according to claim 13, wherein when a zoom operation of said zoom lens is being performed, a field frame display corresponding to said photographing angle of view by said transmission type liquid crystal is blinked and displayed. camera.