JPH05158111A - Finder variable visual field range and camera provided with the finder - Google Patents

Abstract

PURPOSE:To appropriately and naturally show a visual field range in the panoramic photographing mode, etc., of a finder variable change the visual field range. CONSTITUTION:A zoom relay lens system 14, etc., for varying the power of a finder image so that a range having printing in accordance with to a trimming magnification is the visual field range, and a visual field frame 17, etc., variable the visual field range so that the range having the printing in the panoramic photographing mode is the visual field range, are provided on the finder capable of dealing with a normal photographing mode, a trimming photographing mode, and the panoramic photographing mode. When the panoramic photographing mode is set, the finder image of the prescribed magnification is formed by the zoom relay lens system 17, etc., and control so as show the range having the printing in the panoramic photographing mode as the visual field range, by the visual field range 17, etc., is executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a viewfinder having a switchable visual field range and a camera such as a single-lens reflex camera (hereinafter also referred to as "SLR").

[0002]

2. Description of the Related Art Recently, a trimming system applicable to a camera has been proposed. In this system, for example, information for specifying a predetermined range in the image forming area B of the film 141 shown in FIG.
By imprinting it on a predetermined portion 142 of the emulsion surface of 41, the area A is stretched during printing so that the area A shown in FIG.
It is a system capable of printing on the area A ′ of the printing paper 143 shown in FIG.

Specifically, during shooting in the trimming shooting mode, trimming information is recorded on a predetermined portion 142 of the film 141, and this information is read by a reading device at the time of printing, and according to the information. Then, the enlargement zooming is performed by the printing apparatus. still,
According to the shooting in the normal shooting mode, the range of the image forming area B of the film 141 in FIG. 13A is printed on the area A ′ of the printing paper 143 in FIG. 13B.

The enlargement zooming based on the trimming information is called "electronic zoom (EZ)" or "pseudo zoom", and the ratio of the diagonal length of the area specified by the electronic zoom to the diagonal length of the film is called the trimming magnification.

In the trimming, the aspect ratio of the top, bottom, left and right of the photographing area is constant, but the area C excluding the upper and lower parts of the film shown in FIG. 13A is the photographing area, and the area C is used for printing. There is a system capable of panoramic photography in which the image is stretched and printed on photographic paper to obtain a landscape print than in normal photography, and a method is also proposed in which the panorama information is similarly written to a predetermined portion 142 of the film together with the trimming information. Has been done.

The trimming system and the system corresponding to the panoramic photographing need a means for switching the visual field range to the viewfinder so that the same range as the visual field range observed by the viewfinder at the time of photographing is printed. .. For example, when shooting in the trimming shooting mode, the range actually printed by the pseudo zoom can be viewed as a finder image by zooming or the like by moving the lens of the finder optical system. Also, when shooting in the panorama shooting mode where the aspect ratio in the vertical and horizontal directions is longer than the standard, the field of view observed with the viewfinder is actually changed by mechanically changing the shape of the viewfinder frame. Can be seen as a viewfinder image.

[0007]

However, the following problems occur due to the switching of the shooting modes among the normal shooting mode, the trimming shooting mode, and the panoramic shooting mode.

In a camera in which the pseudo zoom operation is performed by the pseudo zoom switch and the panoramic photography is performed by the panoramic changeover switch, the panoramic photography mode can be entered unless proper means is used although trimming cannot be performed in the panoramic photography range. There is a problem that the field of view is set to the panoramic shooting range at the viewfinder magnification before switching.

Further, for example, when the panoramic shooting is fixed at a magnification of 1x, if the panoramic shooting mode is switched from the state in which the pseudo zooming with a magnification other than 1 is being performed and the panoramic shooting mode is released from that state. However, if the magnification at that time remains at 1 ×, the visual field range will be observed only after the visual field limitation due to the panoramic photography is removed. If the field of view observed in the viewfinder is different before entering the panoramic shooting mode and after exiting the panoramic shooting mode, there is a problem in that the usability of the camera is not continuous and gives an unnatural impression. .. It should be noted that this problem is not limited to trimming shooting with pseudo zoom,
Even when using a zoom lens as a shooting lens in normal shooting mode and shooting with optical magnification (hereinafter also referred to as "optical zoom") due to lens movement, it occurs due to setting / releasing panorama shooting mode ..

Recent cameras such as SLRs are generally equipped with an autofocus (hereinafter also referred to as "AF") function. At the same time, it may be necessary to deal with a subject that is difficult to focus with the AF device.
Manual focus for the photographer to manually move the lens
There is also a shooting mode in which focusing is performed by (hereinafter also referred to as “MF”). However, most cameras having an AF function do not have splits or microprisms on the viewfinder focusing plate because photographing is mainly performed by AF. In that case, focusing in the MF mode is difficult. If a means for facilitating focusing in the MF mode is provided in a camera compatible with a plurality of shooting modes as described above, a problem such as an increase in the cost of the finder will occur.

In the viewfinder of a camera capable of pseudo zoom, the field of view range of the viewfinder is switched according to the pseudo zoom as described above. However, when the magnification of the pseudo zoom is large, the field of view is narrow because the shooting lens is equivalent to the telephoto side, and it is difficult to find the subject when framing is started to put the subject in the viewfinder. ..

In a variable magnification finder that moves the lens of the finder optical system corresponding to the pseudo zoom, if the lens movement is driven by a motor, the operation is comfortable and control such as stopping the predetermined pseudo zoom at a position is easy. is there. However, if the motor is inadvertently driven even when the taking lens is not attached, there is a problem that a large amount of electric power is consumed unnecessarily. Further, when the taking lens is attached and the framing is performed from the state where the taking lens is not attached, there is a problem that it is difficult to find a subject if the field of view of the finder is narrow at that time.

When switching from the normal shooting mode to the panoramic shooting mode, in the viewfinder which automatically switches the viewfinder optical system to the wide (low magnification) state with the switching of the visual field range, the viewfinder is in a state other than wide due to the pseudo zoom. When switching from that state to the panoramic shooting mode, it is necessary to forcibly switch to the wide state. However, when the view range is switched from the wide state, the photographer is given an unnatural impression that the upper and lower parts of the view range in the normal shooting state are limited. In other words, it gives the photographer a negative image of restricting the normal and wide field of view.

The present invention has been made in view of these points, and a viewfinder capable of properly and naturally showing a view range in a normal photographing mode, a trimming photographing mode and a panoramic photographing mode, and a viewfinder capable of switching. It is intended to provide a camera provided with it.

[0015]

In order to achieve the above object, the viewfinder of the present invention capable of switching the field of view has a normal photographing mode and a predetermined trimming magnification for the range printed in the normal photographing mode. A viewfinder compatible with a trimming shooting mode that allows trimming shooting to specify a range and a panorama shooting mode that enables panoramic shooting to print a range excluding the upper and lower parts of the range printed in the normal shooting mode. And a scaling means for scaling the viewfinder image so that the range printed corresponding to the trimming magnification is the field of view, and the field of view so that the range printed in the panoramic shooting mode is the field of view. Field-of-view range switching means for switching the range and setting to the panoramic shooting mode Then, the zooming means forms a finder image of a predetermined magnification to prohibit the subsequent zooming operation, and the visual field range switching means indicates the range printed in the panoramic photography mode as the visual field range. It is characterized by having a control means for controlling.

Further, when the panorama shooting mode is set, a memory for storing the trimming magnification immediately before the setting is provided, and when the panorama shooting mode is released, the panorama shooting mode is based on the trimming magnification stored in the memory. It is preferable that the control means controls the magnification varying means so as to restore the visual field range immediately before the setting.

Further, it is preferable that the control means controls the magnification varying means so as to restore the visual field range based on a predetermined trimming magnification when the panoramic photography mode is released.

Further, the camera provided with the viewfinder whose field-of-view range can be switched according to the present invention has a pseudo zoom function for designating a range to be printed at a predetermined trimming magnification with respect to a range to be printed in normal shooting, and a normal shooting mode A camera having a panoramic shooting function for designating a printing range excluding upper and lower parts of the printing range, wherein a viewfinder image is formed so that the printing range corresponds to the pseudo zoom function. Magnification changing means for changing the magnification, visual field range switching means for switching the visual field range so that the range printed corresponding to the panoramic photography function is the visual field range, and when operating the panoramic photography function, A finder image of a predetermined magnification is formed by the variable magnification means, and the visual field range switching means Ri and a viewfinder characterized by having a control means for controlling so as to indicate the range to be printed in panoramic photography functions as a viewing range.

It is preferable that the control means prohibits the scaling of the finder image by the scaling means during the operation of the panoramic photographing function.

Further, a memory for storing the trimming magnification immediately before the operation of the panoramic photographing function is provided, and the visual field immediately before the operation of the panoramic photographing function is based on the trimming magnification stored in the memory when the panoramic photographing function is released. It is preferable that the control means controls the zooming means so as to restore the range.

Further, it is preferable that the control means controls the magnification varying means so as to restore the visual field range based on a predetermined trimming magnification when the panoramic photographing function is released.

Further, the viewfinder capable of switching the visual field range according to the present invention has an autofocus function and a manual focus function for a photographer to manually focus, and at the same time as a normal photographing and a predetermined trimming magnification. A viewfinder compatible with a camera capable of trimming shooting for designating a print range, a focusing screen for confirming a focus state in the manual focus function, and a range printed in correspondence with the trimming magnification. When changing from a state in which the autofocus function can be operated to a state in which the manual focus function can be operated, the viewfinder magnification is changed by the scaling means. A control means for controlling the magnification change of the finder image so that it becomes higher, It is characterized in that.

The camera provided with the viewfinder whose field-of-view range can be switched according to the present invention is a camera capable of normal shooting and trimming shooting for designating a printing range at a predetermined trimming magnification. A viewfinder for changing the magnification of the viewfinder image so that the printed area corresponds to the visual field range, a main switch for turning on / off the power of the entire camera, and the main switch. ON or O
A control unit that controls the finder so as to minimize the trimming magnification in conjunction with the operation of the FF;
It is characterized by having.

Further, the camera provided with the viewfinder whose field-of-view range can be switched according to the present invention is capable of exchanging the photographing lens, and corresponds to the normal photographing and the trimming photographing for designating the printing range at a predetermined trimming magnification. The camera body, the viewfinder for changing the magnification of the finder image by moving the finder optical system so that the range printed in correspondence with the switching between the normal shooting and the trimming shooting is the visual field range, and the finder optical system. Driving means for driving the photographic lens, detection means for detecting that the photographic lens is not mounted, and control for prohibiting the operation of the drive means when the photographic lens is detected by the detection means And a control means for performing.

Further, the camera provided with the viewfinder capable of switching the visual field range of the present invention is capable of exchanging the photographing lens, and corresponds to the normal photographing and the trimming photographing for designating the printing range at a predetermined trimming magnification. The camera body, the viewfinder for changing the magnification of the finder image by moving the finder optical system so that the range printed in correspondence with the switching between the normal shooting and the trimming shooting is the visual field range, and the finder optical system. Driving means for driving the image pickup lens, detection means for detecting that the photographing lens is not attached, and when the detection means detects that the photographing lens is not attached, the trimming magnification is set to be the smallest. And a control means for controlling the drive means.

Further, the viewfinder capable of switching the visual field range according to the present invention enables the normal photographing mode and the trimming photographing in which the range is designated and printed with a predetermined trimming magnification with respect to the range printed in the normal photographing mode. A viewfinder compatible with a trimming photographing mode and a panoramic photographing mode capable of performing a panoramic photographing in which the upper and lower parts of the range to be printed in the normal photographing mode are printed. Zooming means for changing the magnification of the finder image so that the range to be viewed is the viewing range, and viewing range switching means for switching the viewing range so that the range printed in the panoramic shooting mode is the viewing range. When the panoramic shooting mode is set, the zooming means sets a predetermined value. After forming the finder image magnification it is characterized by having a control means for controlling to show the range to be printed in panoramic mode as field of view, the by the field of view switching means.

Further, the viewfinder capable of switching the visual field range according to the present invention enables the normal photographing mode and the trimming photographing in which the range is designated and printed with a predetermined trimming magnification with respect to the range printed in the normal photographing mode. A viewfinder compatible with a trimming photographing mode and a panoramic photographing mode capable of performing a panoramic photographing in which the upper and lower parts of the range to be printed in the normal photographing mode are printed. Zooming means for changing the magnification of the finder image so that the range to be viewed is the viewing range, and viewing range switching means for switching the viewing range so that the range printed in the panoramic shooting mode is the viewing range. When the panoramic shooting mode is set, The viewfinder image is formed such that the operation for forming the viewfinder image at a magnification is completed after the operation for limiting the field of view, which indicates the range to be printed in the panoramic shooting mode by the field-of-view range switching means as the field-of-view range. And a control means for controlling the operation for limiting the visual field and the operation for limiting the visual field simultaneously or alternately with a predetermined time interval.

[0028]

According to the above construction, when the panoramic shooting mode is set, the viewfinder image of a predetermined magnification is formed by the magnification changing means, and the range printed in the panoramic shooting mode is viewed by the view range switching means. When the control by the control means is performed as shown in the range,
In panoramic photography, the range excluding the upper and lower parts of the finder image with a predetermined magnification is always observed as the field of view of the finder. Furthermore, when the panoramic shooting is performed so that the trimming shooting is not performed, an inadvertent operation mistake can be prevented, which is more reliable. Also,
If the trimming magnification before the panoramic shooting is stored in the memory, it is possible to return to the trimming state before the panoramic shooting by using the trimming magnification after the panoramic shooting is completed. Further, when the predetermined trimming magnification is used, after the panoramic shooting is finished, the trimming magnification can be used to always bring the predetermined trimming state. For example, even in a camera capable of zooming and panoramic shooting using a shooting optical system that performs optical zoom, by storing the magnification of the shooting optical system before the panorama shooting in the memory, the panorama shooting can be performed similarly. You can restore the trimming state before entering.

Further, when the state in which the autofocus function can be operated is switched to the state in which the manual focus function can be operated, the magnification of the finder is increased by also using the magnification changing means for changing the magnification of the finder image in the trimming photographing. By controlling the zooming of the viewfinder image with the control means, the higher the viewfinder magnification, the clearer the focus state of the image formed on the focusing screen, so that the photographer can easily focus manually. You can

Since the framing operation is accompanied after the main switch is turned on or off, the finder is controlled by the control means so that the trimming magnification is minimized in conjunction with the on or off operation of the main switch. Since the finder image is magnified so that the printed area becomes the visual field range, it is possible to perform framing in the widest visual field. Even when the shooting lens is not mounted, instead of being linked with the ON or OFF operation of the main switch, the same operation is performed by the similar control.

If the control means controls the operation of the drive means such as a motor used to drive the finder optical system when the taking lens is not attached, the drive means is meaningless due to an operation mistake by the photographer. It is possible to prevent the operation.

When the panoramic photographing mode is set, a viewfinder image having a predetermined magnification is formed by a magnification changing means for changing the magnification of the viewfinder image so that the range printed corresponding to the trimming magnification becomes the visual field range. After that, when the control means controls the range printed in the panoramic shooting mode to be the viewing range, the viewing range is switched so that the range printed in the panoramic shooting mode becomes the viewing range. The upper and lower parts of the range are limited before the wide state is set in the pseudo zoom. The operation for forming the finder image of a predetermined magnification by the magnification changing unit is completed after the operation for limiting the visual field indicating the range printed by the visual field range switching unit in the panoramic photographing mode as the visual field range. In addition, if the operation for forming the finder image and the operation for limiting the visual field are controlled so as to be performed simultaneously or alternately at a predetermined time, the upper and lower portions of the visual field range are restricted in the pseudo zoom. It ends before it becomes a wide state. In any case, only the field of view limitation is not finally performed.

[0033]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows a schematic configuration of a camera including a finder to which the present invention is applied. In the figure, reference numeral 1 is a taking lens, which is usually detachable from the camera body 4. Reference numeral 2 denotes a main mirror that guides the light that has passed through the taking lens 1 toward an upper finder optical system 3, and is provided inside the camera body 4. 5 indicates a film. 6 is an AF part of the light from the taking lens 1.
(Automatic focus detection) This is an AF sub-mirror directed to the module 7.

The finder optical system 3 includes, in order from the upstream side of the light, a focusing plate 8 arranged at the position of the primary image plane where the primary image is formed by the taking lens 1, and a first condenser lens 9.
A first mirror 10 that directs the light from the condenser lens 9 forward, a second mirror 11 that directs the light from the first mirror 10 upward, and a reduced virtual image of the primary image of the focusing screen 8 as the focus. A relay system auxiliary lens 12 for forming light on the downstream side of the plate 8; and a third mirror 13 for directing the light from the relay system auxiliary lens 12 to the optical axis of the photographing lens 1 and to the rear. A zoom relay lens system 14 used for pseudo zoom, a fourth mirror 15 for directing light from the zoom relay lens system 14 downward, a second condenser lens 16, and a secondary image surface on which a secondary image is formed. A field frame 17 arranged at a position, and the light passing through the field frame 17 is directed rearward in parallel with the optical axis of the photographing lens.
An LCD (liquid crystal display element) 20, which is composed of a mirror 18 and a fixed eyepiece lens 19, and further creates display characters for so-called infinder display for displaying shutter speed, aperture value, etc. outside the field of view, An infinder submirror 21 and an infinder prism 22 are provided at the positions shown in the figure. In addition, 23 has shown the pupil position.

In this embodiment, the main mirror 2 and the first to fifth parts are arranged.
Mirrors 10, 11, 13, 15, 18 total 6 (even)
Since the mirror is used, the final viewfinder image is an erect image for the image to be captured.

The zoom relay lens system 14 is composed of a two-component, three-lens configuration lens system. By moving while changing the relative relationship in correspondence with the trimming magnification by the pseudo zoom, the zoom relay lens system 14 moves from the primary image plane to the secondary surface. The image magnification on the secondary image plane with respect to the primary image plane can be changed while keeping the conjugate length up to the image plane constant.

In a trimming system for trimming a part of the entire image forming area of the film 5 and extending it during printing, the entire image forming area B of the film shown in FIG. The WIDE state, the TELE state when a part of the area A is the shooting range, and the MI is the state where a certain size between the areas A and B is the shooting range.
In the DDLE state, since the light flux is restricted by the field frame 17, the zoom relay lens system 14 is in the position of the solid line in the WIDE state in FIG. 2, and the light flux passes from the taking lens 1 in the range of the solid line. Further, in the TELE state, the zoom relay lens system 14 is at the position indicated by the broken line, and the light flux passes within the range indicated by the broken line. Therefore, it is indicated that the range of the solid line on the film 5 is the shooting area in the WIDE state, and the range of the broken line on the film 5 is the shooting area in the TELE state. In the MIDDLE state, the zoom relay lens system is located at an intermediate position between the WIDE state and the TELE state, and is shown in a photographing range of a predetermined size (not shown).

In this embodiment, the field frame 1 for restricting the field of view.
Since 7 is not on the focusing screen 8 which is the primary image surface but on the secondary image surface, it is not necessary to change the size of the visual field regulating member corresponding to the pseudo zoom.

Further, the relay optical system (relay system auxiliary lens 12 + zoom relay lens system 14) is a reduction optical system, whereby the secondary image plane can be made smaller than the primary image plane, and The optical path can be narrowed.
Moreover, since the focal length of the eyepiece lens 19 becomes short in order to make the magnification equivalent to that of the conventional finder optical system, the overall size can be made compact.

In this embodiment, since the bending of the optical path by the fourth mirror 15 is slightly biased forward rather than right below, the angle of incidence of the optical path on the fourth mirror 15 and the fifth mirror 18 is less than 45 °. It is getting smaller.

A space for moving the zoom relay lens system 14 needs to be provided between the third mirror 13 and the fourth mirror 15, and therefore the fourth mirror 15 is moved backward. If the fourth mirror 15 bends the optical path vertically downward and the fifth mirror 18 bends the optical path backward, a large space is opened between the first mirror 10 and the fifth mirror 15, and a useless space is created. .. In addition, the eyepiece lens 19 largely pops out rearward.

Therefore, as shown in FIG. 1, the fourth mirror 1
5 and the incident angles θ1 and θ2 of the optical path to the fifth mirror 18 are set to 4
By making it smaller than 5 ° and making the fifth mirror 18 close to the first mirror 10, a wasteful space is eliminated and a compact structure is provided. That is, the fourth
By setting the incident angle of the optical axis to the mirror 15 to be less than 45 °, the light is allowed to travel to the first mirror 10 side and the first mirror 1
The fifth mirror 18 can be positioned in the space immediately after the rear of 0, and the incident angle of the optical axis to the fifth mirror 18 is set to 4
By setting the angle to be less than 5 °, it is possible to make the light travel rearward and bring the fifth mirror 18 close to the first mirror 10 along the first mirror 10. At the same time, since the eyepiece lens 19 can also be brought close to the front first mirror 10, the eyepiece lens 19 can be made compact without using the finder alone, without significantly protruding rearward.

Incidentally, in FIG. 14, the first to fifth mirrors 10, 11, 13, 1 in the case where the incident angles θ 1 and θ 2 of the optical axis to the fourth mirror 15 and the fifth mirror 18 are made larger than 45 °.
5 and 18 are shown. As shown in the figure, θ1 is 45
If it is larger than 0 °, the fifth mirror 18 cannot be positioned in the space immediately behind the first mirror 10 and the first mirror 1
There is a wasted space between 0 and the fifth mirror 18.

A flash light emitting section 24 is arranged on the back surface of the third mirror 13, and a flash condenser 25 is provided at the position shown in the figure. The finder that performs zooming corresponding to the pseudo zoom as in the present embodiment,
The size is inevitably larger than that of a conventional viewfinder that does not perform zooming, for example, a viewfinder that uses a pentaprism. Further, providing a flash above the viewfinder may increase the height of the camera. However, in the present embodiment, since the flash light emitting section 24 is arranged in the rear surface of the third mirror 13, that is, in the triangular space on the rear surface of the third mirror 13, the viewfinder does not grow substantially upward or forward. .. Further, the fact that the flash condenser 25 is arranged in the space behind the first mirror 10 also prevents the camera from becoming large. Therefore, by disposing the flash light emitting unit 24 on the rear surface of the third mirror 13 and disposing the flash condenser 25 on the rear surface of the first mirror 10, the viewfinder and the flash device as a whole can be relatively compact. It will be possible.

FIG. 1 shows a detailed structure of a finder using this optical system. The viewfinder is composed of an objective block 31, a zoom block 32, and an eyepiece block 33.
The objective block 31 holds a focusing screen 8, a first condenser lens 9, a first mirror 10, a second mirror 11 and a relay system auxiliary lens 12. The objective block 31 includes the focusing screen 8, the first mirror 10,
The side surfaces of the second mirror 11, the relay system auxiliary lens 12 and the objective block 31 form a hermetically sealed structure, which prevents dust and the like from adhering to the focusing screen 8 which is the image forming surface. The zoom block 32 holds the third mirror 13, the zoom relay lens system 14, the fourth mirror 15, and the second condenser lens 16.

When shooting in the trimming mode, the zoom relay lens system 14 zooms as described above so that the range actually printed can be viewed as a finder image. Further, at that time, the information recording device 26 (FIG. 2) writes the trimming information on the film by an optical, magnetic or other method, and by reading the information at the time of printing, printing can be performed under the same conditions as at the time of photographing.

The zoom relay lens system 14 is composed of, in order from the object side, a first component G1 composed of a biconvex positive lens, and a second component G2 composed of a biconvex positive lens and a concave / concave negative lens. These components are respectively the lens holder 3
It is fixed to 4,35. Here, a mechanism for driving the zoom relay lens system 14 will be described with reference to FIGS.
It will be explained based on. The lens holders 34 and 35 are movable only in the front-rear direction along the guide rod 41, and the pins 42 and 43 provided on the lens holders 34 and 35 are urged by the springs 44, respectively, so that the cam surfaces are moved. Four
The position is determined by abutting on 5, and 46. The cam plate 47 having the cam surfaces 45 and 46 cut is driven by a motor 55 via gears 48, 49, 50, 51, 52, 53 and 54. The gears 52 and 54 are worm gears, and achieve high-speed deceleration compactly. In addition, the surfaces 56 and 57 on the cam plate at both ends of the zoom range are
By contacting the projections 58 and 59 provided on the zoom block 32, accurate image magnification can be achieved at both ends of the zoom range. A contact piece 60 is fixed to the lens holder 34, and the zoom position can be detected by conduction between the contact piece 60 and a pattern on the encoder substrate 61 fixed on the zoom block 32. Therefore, the image magnification can be controlled by the microcomputer as described later. 3 shows the viewfinder in the WIDE state, and FIG. 4 shows the viewfinder in the TELE state.

By the way, generally, when a mirror is used in the optical path, it becomes difficult to match the optical axes of the optical systems in front of and behind the mirror. The greater the number of mirrors, the stronger this tendency. In the present embodiment, the visual field frame 17 (FIGS. 1 and 2) is arranged at the position of the secondary image plane for the above-mentioned reason as a visual field limiting mechanism for indicating the photographing range when the user looks through the finder. However, if the optical axis shifts, the field frame 17
The shooting range indicated by is shifted on the focusing screen 8 in the direction perpendicular to the optical axis, and an incorrect shooting range is indicated.

As means for correcting the deviation of the optical axis, means for moving and adjusting the field frame 17 in the direction perpendicular to the optical axis,
There is a means for changing and adjusting the angle of any of the reflecting mirrors in the optical path from the focusing screen 8 to the field frame 17.

As will be described later, the switching mechanism for the panoramic mode is incorporated in the visual field frame 17, and the entire switching mechanism must be moved in order to move the visual field frame 17. Therefore, the former method of moving the field frame 17 is not appropriate.

On the other hand, the latter means for adjusting the angle of the reflecting mirror has different effects depending on which mirror is used for the adjustment. When adjusting with a reflection mirror whose optical path is close to the primary image or secondary image, the amount of movement of the optical axis that is corrected with respect to the amount of swing of the angle of the mirror is small, so that there is no deviation The amount of swing of the reflection mirror must be increased to make the adjustment. For that purpose, it is necessary to widen a gap or the like for moving the mirror. Since the relay optical system is a reduction optical system as described above, the first mirror 10 near the primary image plane has the largest size, and the amount of movement of the optical axis that is corrected with respect to the amount of swing of the mirror angle in relation to magnification Is the least.

Therefore, especially the first mirror 10 on the primary image plane side.
When adjusting with, the amount of swing of the mirror angle to correct the misalignment of the optical axis becomes large, so a large space is required for the mirror to move, and the diopter can be adjusted vertically and horizontally in the viewfinder field. But one-sided blurring is likely to occur.

Therefore, in the present embodiment, the third mirror 13 immediately in front of the zoom relay lens system 14 is adjustable. The third mirror 13 is distant from both the focusing screen 8 and the field frame 17, and the amount of swing for adjustment is small, and one-sided blurring does not easily occur. Further, the third mirror 13 is smaller in size than the other mirrors and is located above and in front of the finder optical system 3, so that adjustment is easy.

This adjustment will be described with reference to FIG. FIG. 5A shows the holder 71 of the third mirror 13. The third mirror 13 is placed in the opening 72 at the center of the holder 71.
Is fixed, and screw holes 73,
74 and 75 are provided. And this holder 71
5 is fixed on the zoom block 32 at the screw holes 73 to 75 by screws through three springs, as shown in a vertical sectional view in FIG. The springs 77 and 78 and the screws 80 and 81 correspond to the screw holes 74 and 75, respectively, and the screw hole 73 corresponds to a spring and a screw (not shown). Then, each screw is adjusted so that the optical axis of the light guided upward from the relay system auxiliary lens 12 and the optical axis of the zoom relay lens system 14 coincide with each other.

As shown in FIG. 1, the eyepiece block 33 holds a fifth mirror 18 and an eyepiece lens 19.
Since the holder 36 of the eyepiece lens 19 is fixed to the eyepiece block 33 with the washer 37 interposed therebetween, the washer 37
The diopter can be adjusted by changing the thickness of the. In FIG. 1, the structure related to the viewfinder display is omitted.

The objective block 31 is the camera body 4
(FIG. 2), the zoom block 32 is the objective block 31,
The eyepiece blocks 33 are fixed to the zoom blocks 32, respectively, and the view frame 17 and a mechanism for limiting the view exist between the zoom blocks 32 and the eyepiece blocks 33.

FIG. 6 shows a visual field limiting mechanism provided near the visual field frame 17. When shooting in panorama mode, it is desirable that the viewfinder field of view matches the print.
The vertical direction is restricted. In the standard state (normal photographing mode) of FIG. 6A, the finder field is formed by the field frame 17. Edge 1 of field frame 17
Reference numerals 04, 105, 106 and 107 are eyepieces 19 (FIG. 1)
In order to prevent it from appearing to be bent due to distortion caused by, the shape is corrected so that it looks like a straight line at the time of observation by making it into a predetermined curved shape.

Field limiting plates 91 and 92 above and below the field frame 17, respectively.
The elongated holes 116, 117, 118, and 119 of the above are engaged with the pins 112, 113, 114, and 115, respectively, so that the field limiting plates 91 and 92 can move only in the vertical direction. In the panorama mode, the field limiting plates 91 and 92 move to the position shown in FIG. 6B to form a finder field. Edge 1 of the field limiting plates 91, 92
Like the edges 104 and 105, the edges 08 and 109 are corrected so as to look like a straight line during observation by the predetermined curved shape, but as shown in FIG. 6B, the edges 104 and 105 are corrected.
Since the correction is performed at a position different from
The edges 104 and 105 are formed with curved lines having a different shape. In reality, the edges 104, 105, 106, 107, 1
08 and 109 are part of a circle with a certain radius, and 1
The radii of the curves of 08 and 109 are larger than the radii of the curves of 104 and 105.

By writing "PANORAMA" or the like on the field limiting plate 91 or 92 or both, it is possible to easily display the mode in the finder. Further, by using translucent ones as the field limiting plates 91 and 92, the field of view of the panoramic radiography can be clearly understood and the periphery of the field of view can be confirmed. 7 (A) and 7 (B), FIG.
6B shows the appearance of the finder in the state shown in FIG. In both cases, the distortion is corrected and the viewfinder field is rectangular. In the panorama mode (Fig. 7 (B)), "PAN" is displayed outside the field of view.
"ORAMA" is displayed, indicating that the camera is in the panorama mode.

As shown in FIG. 6, the pins 94 and 95 provided on the drive lever 93 are fitted in the long holes 96 and 97 of the visual field limiting plates 91 and 92, and the visual field is generated by the rotation of the drive lever 93. The limit plates 91 and 92 move vertically. That is, the visual field limiting plates 91 and 92 perform a moving operation from the vertical direction of the visual field range formed by the visual field frame 17 so as to limit the visual field in the same range, thereby changing the vertical size of the visual field to change the panoramic view. The view range in the shooting mode is shown. Since the change in the size of the visual field is performed in one direction facing each other from the upper and lower sides, it is possible to maintain the visual field range in a shape that can correspond to the distortion correction even by such a change.

The drive lever 93 is rotatable about the shaft 102 and is biased counterclockwise by the spring 98, that is, in the direction of closing the visual field limiting plate.
The lever 101 comes into contact with 00 to regulate the rotational position.
The operation lever 99 has a click (not shown) so that it can be stopped at positions corresponding to the standard and panorama respectively. Further, in the panoramic shooting mode, as shown in FIG. 6B, the positions of the field limiting plates 91 and 92 are the long holes 116 and 11 respectively.
The ends of 7, 118, 119 are pins 112, 113, 11
The pin 100 on the operating lever 99 and the lever 101 are separated from each other, as determined by abutting against the 4,115. With this, in the panorama mode, even if the position of the operation lever 99 is not accurate, the visual field limiting plates 91 and 92 can be accurately positioned. Further, on the operation lever 99, the contact piece 11
0 is provided, and the contact piece 11 is set in the panorama mode.
It contacts 1 and generates a panoramic signal.

The field-of-view restriction for the panorama mode is limited to the field-of-view frames 91 and 9 which are separate members from the field frame 17 for normal photographing.
As described above, the visual field regulation having different edge shapes in the panorama mode and the normal photographing can be performed by performing the procedure in 2. That is, the edges of the visual field frame 17 and the visual field limiting plates 91 and 92 indicating the visual field range in each photographing mode are respectively distorted by the distortion of the eyepiece lens 19 (FIG. 1) that guides the subject within the visual field range to the pupil. By constructing the curve so that it can be observed in a straight line, good distortion correction is possible in any shooting mode.

Regarding the stopping positions of the moving field limiting plates 91 and 92, accuracy is required only in the state of FIG. 6B which is the panoramic mode. And FIG.
At the time of the standard photographing of (A), since the field limiting plates 91 and 92 are hidden by the fixed field frame 17, the stop position accuracy is not required, and as a result, the field limiting mechanism can be easily manufactured.

The information recording device 26 (FIG. 2) is the same when photographing in the panorama mode as in photographing in the trimming mode.
The panorama information is written by, and the panorama print is performed by reading this information at the time of printing.

FIG. 8 shows the appearance of a camera equipped with the finder of this embodiment. In the figure, 121 is a power switch (main switch). A viewfinder zooming mode selector switch 122 switches between a continuous mode for continuously zooming and a step mode for discretely zooming at a plurality of points (three points of tele, middle, and wide in this embodiment). Reference numeral 123 is a panorama mode switch, 124 and 125 are EZ keys used for viewfinder zooming, 126 is a shutter button, 12
Reference numeral 7 is a display plate for displaying the state of the camera. The panorama mode switch 123 is the operation portion of the operation lever 99 in FIG.

FIG. 9 shows a block diagram of the camera of FIG. The CPU 160 controls the entire camera. In the figure, EZ-TELE and EZ-WIDE signals are
A signal generated by the EZ keys 124 and 125.
The E signal is a signal generated by the mode switching switch 122, and the PANORAMA signal is a signal generated by the panoramic mode switch 123. Also, ENCODE
R-TELE, ENCODER-TELE-MIDDL
E, ENCODER-MIDDLE, ENCODER-
The WIDE-MIDDLE and ENCODER-WIDE signals are signals generated from the encoder board 61 (Figs. 3 and 4), and the zoom relay lens system 14 (Figs. 1 and 2) uses TEL.
Between E, TELE and MIDDLE, MIDDLE, W
Between IDE and MIDDLE, in each state of WIDE, a signal corresponding to the state is generated.

10 and 11 are sequence diagrams of the step mode of this embodiment. The power switch 121 of FIG.
When is turned on, the flow starts from step # 100. PAN mode and EZmem in step # 101
“Ory” is information recorded in the memory 150 of FIG. 9, and is initialized when the power switch 121 is turned on.

Next, in step # 102, the viewfinder variable magnification optical system is first set to the WIDE state. This is immediately after the power switch 121 is turned on, and it is assumed that the user performs framing so that the user looks into the finder and puts the subject to be photographed in the field of view. This is because in the WIDE state, a wider range can be seen with the finder, and the subject can be easily searched for.

The routine below step # 103 is a routine which is repeatedly executed as an infinite loop when the power switch 121 is in the ON state.
When it is detected that the power switch 121 is OFF in 103, the operation for ending the loop is started. Power switch 12
When 1 is OFF, the process proceeds to step # 104, and if the state of the viewfinder variable magnification optical system is not WIDE, W
In order to enter the IDE state, the process goes through step # 102, proceeds to step # 103 and step # 104, and ends at step # 105. The WIDE state when the power switch 121 is turned off is for standby when the power switch 121 is next turned on.
This is also because framing is easy to perform even when looking through the finder before turning on the power switch 121.

After the power switch 121 is turned on or off, the framing operation is accompanied. Therefore, as described above, the CPU is controlled so that the trimming magnification is minimized in association with the ON or OFF operation of the power switch 121.
When the finder is controlled by 160, the finder changes the magnification of the finder image so that the printed area becomes the visual field range, so that the framing can be performed in the widest visual field.

In step # 106, when the taking lens 1 (FIG. 2) is not attached, a determination is made to bring it into the WIDE state. If not attached, the process goes from step # 107 to step # 102 to enter the WIDE state. If it is not attached, the process goes to step # 108 and the viewfinder variable power optical system is always kept in the WIDE state. If the taking lens 1 is not attached, it is E
To prevent the lens from being unnecessarily moved due to the operation of the Z keys 124 and 125 (FIG. 8) and the battery consumption, and to make it easier to find the subject to be photographed in the WIDE state when the next lens 1 is attached. This is because

As described above, when the taking lens 1 is not attached, the motor 5 used to drive the finder optical system.
5, so that the operation of the driving means such as 5 is prohibited.
By controlling with, it is possible to prevent meaningless operation of the drive unit due to an operation mistake by the photographer. Further, even when the shift to the WIDE state is interlocked with the unattached state of the taking lens 1, the framing can be performed with the widest field of view, similarly to interlocking with the ON or OFF operation of the power switch 121. It becomes.

Panorama mode switch 123 shown in FIG.
When is set to the panorama mode, the field of view for the panorama mode is linked with the panorama mode switch 123.
(FIG. 6 (B)), and the PANORAMA signal (FIG. 9) is generated. In step # 108, PANO
WIDE the viewfinder variable magnification optical system by the RAMA signal
State. The switch 123 is turned on immediately before the end of the change of the field of view, and after the end of the change of the field of view, the viewfinder magnification is continuously changed.
The end of changing the field of view and the start of changing the magnification may overlap. For example, the start of changing the field of view and the start of changing the magnification may be performed at the same time.

More specifically, when the panoramic shooting mode is set, the zoom relay lens system 14 or the like for changing the magnification of the viewfinder image so that the range to be printed corresponds to the trimming magnification is the predetermined magnification. To form a viewfinder image. After that, the CPU 160 controls the visual field limiting plates 91, 92, etc. for switching the visual field range so that the range printed in the panoramic photography mode becomes the visual field range, so that the range printed in the panoramic photography mode is indicated as the visual field range. .. Therefore, the upper and lower parts of the visual field range are limited before the pseudo zoom becomes wide. The zoom relay lens system 1
The operation for forming a finder image of a predetermined magnification with 4 or the like ends after the operation for the field-of-view restriction in which the range printed by the field-of-view restriction plates 91, 92 and the like in the panoramic shooting mode is shown as the field-of-view range. As described above, if the operation for forming the finder image and the operation for limiting the visual field are controlled to be performed simultaneously or alternately at a predetermined time, the upper and lower portions of the visual field range are limited.
The process ends before the wide state is set in the pseudo zoom. In any case, only the field of view limitation is finally eliminated.

FIG. 15 shows the relationship between the zooming and the field of view limitation for smooth transition from the normal photographing mode to the panoramic photographing mode. In the above-described embodiment, the viewfinder image is zoomed prior to the switching of the field of view range (field of view restriction) .However, when pursuing a smooth transition to the panoramic shooting mode, field of view restriction and start of zooming are performed. It is preferable that the ends are coincident with each other and the control is performed smoothly so as to draw a curve as shown in FIG.
Also, after ending the field of view restriction earlier than the end of zooming,
Further, if the start of zooming is made earlier than the field of view restriction (the zoom and the field of view restriction overlap), the field of view switching to the panoramic shooting mode feels smoother.
The specific position of the optical system is the corresponding position where the trimming magnification = 1.

When the PANORAMA signal is ON, the flag PANmode indicating that the panoramic photographing is performed is set to Yes in step # 109, and the WIDE state is set through step # 102. If the PANORAMA signal is ON, the process goes to step # 110 and the viewfinder variable magnification optical system is always kept in the WIDE state. In this embodiment, in order to indicate the shooting range of panoramic shooting, it is necessary to set the field frame linked to the panorama mode switch for panorama and set the viewfinder variable magnification optical system to the WIDE state. Therefore, PANORA
When the MA signal is ON, EZ keys 124 and 125
EZ-TELE, EZ generated by pressing (Fig. 8)
-Disable the WIDE signal (Fig. 9) and always keep the viewfinder variable magnification optical system in the WIDE state.

As described above, when the panoramic photographing mode is set, a viewfinder image having a predetermined magnification is formed by the zoom relay lens system 14 and the field limiting plate 9 is used.
If the CPU 160 performs control so that the range printed in the panoramic shooting mode by 1, 92 or the like is shown as the field of view range, the range excluding the upper and lower parts of the finder image at a predetermined magnification in the panoramic shooting is always the field of view of the finder. Can be observed as. Furthermore, by performing control to invalidate the above signals so that trimming photography is not performed when performing panoramic photography, it is possible to reliably prevent inadvertent operation mistakes.

If the panorama mode switch is in the standard state (normal photographing mode), the field frame is the one in the standard photographing as shown in FIG. # 1
Go to 10. When the PANORAMA signal is ON, the PANmode is set to Yes in step # 109, and then the PANORAMA signal is set to OFF, and when the process goes to step # 110, the determination is Yes. At this time, in steps # 111 and # 113, E
MIDD depending on the contents recorded in Zmemory
The lens is moved to the LE or TELE state. E
Zmemory stores the state of the viewfinder variable magnification optical system immediately before the PANORAMA signal is turned on, and sets the panorama mode switch 123 to the panorama state. Further, when the standard state is set thereafter, the state immediately before the panorama mode switch 123 is set to the panorama mode can be restored.

Thus, for example, in the case of selecting whether to shoot in the TELE state or the panoramic shooting state, the panorama mode switch 123 is set to the panorama mode, the field frame is switched to the panorama mode, and PANOR is set.
By changing the viewfinder variable magnification optical system from the TELE state to the WIDE state by the AMA signal, it is possible to show the correct panorama shooting range. Then, when the panorama mode switch 123 is set to the standard state next time, the field frame is switched to the standard state and the viewfinder variable magnification optical system immediately returns to the TELE state without pressing the EZ key.

As described above, by storing the trimming magnification before the panoramic photography in the memory, it is possible to return to the trimming state before the panoramic photography using the trimming magnification after the panoramic photography is completed. You can do it. Further, by adopting a predetermined trimming magnification, it is possible to always have a predetermined trimming state by using the trimming magnification after the panoramic shooting is completed. Even in a camera capable of zooming and panoramic shooting using a shooting optical system that performs optical zoom, by storing the magnification of the shooting optical system before entering panoramic shooting in the memory, panoramic shooting can be performed similarly. You can restore the trimming state before entering.

Steps # 116 to # 118 are a routine for moving the viewfinder variable magnification optical system to the TELE state when the autofocus device is switched from the autofocus state (AF) to the manual focus state (MF). .. When the user switches to the manual focus state, the user manually adjusts the focus while looking at the subject in the viewfinder, so the viewfinder magnification is high, and the TELE state is set so that the focus can be adjusted more accurately. The routine below step # 119 is E in FIG.
This is a routine for switching the viewfinder variable magnification optical system according to the EZ-TELE and EZ-WIDE signals generated when any one of the Z keys 124 and 125 is pressed. EZ-
In case of TELE signal, if the viewfinder variable magnification optical system is MIDDLE, go to TELE, if it is WIDE, MIDDLE
It is switched to E and does not change in the TELE state. EZ-W
With the IDE signal, the state of the viewfinder variable magnification optical system is TE
If it is LE, it switches to MIDDLE, and if it is MIDDLE, it switches to WIDE. If it is in WIDE state, it does not change. Step # 1
After changing the state of the viewfinder variable magnification optical system in 19 to # 130, the process returns to step # 103 and the same routine is repeated.

As described above, the zoom relay lens system 14 for changing the magnification of the finder image in the trimming photographing when the state in which the auto focus function can be operated is switched to the state in which the manual focus function can be operated.
The CPU 160 controls the zooming of the finder image so that the finder magnification becomes high, and the focus state of the image formed on the focusing screen 8 becomes clearer as the finder magnification becomes higher. The person can easily adjust the focus manually.

MoveWIDE, M in FIGS. 10 and 11
oveMIDDLE and MoveTELE are finder variable magnification optical systems WIDE, MIDDLE and TE, respectively.
This is a routine for moving the lens to LE.

As an example, FIG. 12 shows MoveMIDDLE.
Shows the routine of. The encoder board 61 for detecting the lens position shown in FIGS. 3 and 4 has a lens position of WIDE.
(Generate ENCODER-WIDE signal), MIDDLE
(Generate ENCODER-MIDDLE signal), TELE
Position (generate ENCODER-TELE signal) or between WIDE and MIDDLE (ENCODE
R-WIDE-MIDLE signal is generated), between TELE and MIDDLE (ENCODER-TELE-MI
The position of generating the DDLE signal) is detected. M
The oveMIDDLE routine returns E in step # 151.
If the NCODER-MIDDLE signal is generated, it is not necessary to move the lens, so the driver 155 and the motor 55 (FIG. 9) for moving the lens are stopped (#
152) and the routine is ended (# 153).

Step # 154 or Step # 155
, ENCODER-TELE signal or ENCODE
The lens is TE by the R-TELE-MIDDLE signal.
When it is detected that it is between the LE position or between TELE and WIDE, the lens is moved in the WIDE direction in step # 156, and the ENCODER-MIDDL is executed in step # 151.
This is repeated until the E signal is detected.

E in step # 157 and step # 158
NCODER-WIDE signal or ENCODER-WID
Depending on the E-TELE signal, the lens is in the WIDE position or W
If it is detected between IDE and MIDDLE, the lens is moved in the TELE direction (# 159), and this is repeated until ENCODER-MIDDLE is detected in step # 151. In the case of the continuous mode, FIG.
The operation at the time of releasing the panorama after # 110 is omitted, and the operation after # 119 in FIG. 11 is performed by EZ-TELE and EZ-WID.
ENCODER-TEL for each signal of E
T when the motor is not E or ENCODER-WIDE
It may be changed so as to rotate in the ELE direction and the WIDE direction. Further, as another configuration, the encoder may be further subdivided and the same processing as in FIGS. 10 and 11 may be performed.

[0087]

As described above, the viewfinder capable of switching the visual field range according to the present invention prints in the normal shooting mode and a range to be printed in the normal shooting mode by designating a range with a predetermined trimming magnification. The viewfinder is compatible with a trimming shooting mode capable of trimming shooting and a panoramic shooting mode capable of performing panoramic shooting in which the upper and lower parts of the range to be printed in the normal shooting mode are printed. Magnification changing means for changing the magnification of the finder image so that the range printed corresponding to
A field-of-view range switching unit that switches the field-of-view range so that the range to be printed in the panoramic shooting mode is the field-of-view range, and when the panoramic shooting mode is set, a finder image of a predetermined magnification is displayed by the scaling unit. And a control means for prohibiting the subsequent zooming operation after the formation and for controlling the range to be printed in the panoramic shooting mode by the view range switching means as a view range. Even when the panoramic shooting mode is set and the visual field range is switched, the proper panoramic shooting range can always be shown. That is, while the panoramic shooting mode is set, even if the pseudo zoom switching operation is performed, it is possible to always show an appropriate panoramic shooting range without being affected by careless operation or the like.

Further, when the panorama shooting mode is set, a memory for storing the trimming magnification immediately before the setting is provided, and when the panorama shooting mode is released, the panorama shooting mode is set based on the trimming magnification stored in the memory. By configuring the control unit to control the zooming unit so as to restore the visual field range immediately before setting, the visual field range observed by the viewfinder before entering the panoramic shooting mode and after exiting the panoramic shooting mode Since they are the same, the camera feels continuous and natural operation is possible.

The panoramic shooting mode is also entered by the control means controlling the zooming means so as to restore the visual field range based on a predetermined trimming magnification when the panoramic shooting mode is released. The field of view observed in the viewfinder before and after exiting the panoramic shooting mode is the same, so there is continuity in the usability of the camera and natural operation is possible.

Further, the camera provided with the viewfinder capable of switching the visual field range of the present invention has a pseudo zoom function for designating a range to be printed at a predetermined trimming magnification with respect to a range to be printed in the normal shooting, and a normal shooting mode. A camera having a panoramic shooting function for designating a printing range excluding upper and lower parts of the printing range, wherein a viewfinder image is formed so that the printing range corresponds to the pseudo zoom function. Magnification changing means for changing the magnification, visual field range switching means for switching the visual field range so that the range printed corresponding to the panoramic photography function is the visual field range, and when operating the panoramic photography function, A finder image of a predetermined magnification is formed by the variable magnification means, and the visual field range switching means Since it has a viewfinder characterized by having a control means for controlling the range printed by the panoramic shooting function as a visual field range, the panoramic shooting mode is set to set the visual field range. It is possible to always show an appropriate panoramic shooting range even when switching.

The control means is configured to prohibit the magnification change of the finder image by the magnification change means during the operation of the panoramic photography function, so that the pseudo zoom switching operation can be performed while the panoramic photography mode is set. Even when going, it is possible to always show an appropriate panoramic shooting range without being affected by careless operation or the like.

Further, a memory for storing the trimming magnification immediately before the operation of the panoramic photographing function is provided, and the field of view immediately before the operation of the panoramic photographing function is based on the trimming magnification stored in the memory when the panoramic photographing function is released. By configuring the control unit to control the zooming unit so as to restore the range, the field of view observed by the viewfinder before entering the panoramic shooting mode and after exiting from the panoramic shooting mode is the same. The feeling of use is continuous and natural operation is possible.

The panoramic photographing mode can also be entered by the control means controlling the magnification varying means so as to restore the visual field range based on a predetermined trimming magnification when the panoramic photographing function is released. The field of view observed in the viewfinder before and after exiting the panoramic shooting mode is the same, so there is continuity in the usability of the camera and natural operation is possible.

Further, the viewfinder of the present invention capable of switching the field of view has an autofocus function and a manual focus function for the photographer to manually focus, and at the same time as the normal photographing and a predetermined trimming magnification. A viewfinder compatible with a camera capable of trimming shooting for designating a print range, a focusing screen for confirming a focus state in the manual focus function, and a range printed in correspondence with the trimming magnification. When changing from a state in which the autofocus function can be operated to a state in which the manual focus function can be operated, the viewfinder magnification is changed by the scaling means. A control means for controlling the magnification change of the finder image so that it becomes higher, Since it has a configuration that, without adding a new member, it is possible to easily adjust the focus in manual focus function in such a control only.

Further, the camera provided with the viewfinder whose field-of-view range can be switched according to the present invention is a camera capable of normal shooting and trimming shooting for designating a printing range at a predetermined trimming magnification. A viewfinder for changing the magnification of the viewfinder image so that the printed area corresponds to the visual field range, a main switch for turning on / off the power of the entire camera, and the main switch. ON or O
A control unit that controls the finder so as to minimize the trimming magnification in conjunction with the operation of the FF;
The main switch is turned on
Or in the framing operation following the OFF operation,
The viewfinder has the widest field of view, which makes it easier to find a subject.

Further, the camera provided with the viewfinder capable of switching the visual field range of the present invention is capable of exchanging the photographing lens, and corresponds to the normal photographing and the trimming photographing for designating the printing range at a predetermined trimming magnification. The camera body, the viewfinder for changing the magnification of the finder image by moving the finder optical system so that the range printed in correspondence with the switching between the normal shooting and the trimming shooting is the visual field range, and the finder optical system. Driving means for driving the photographic lens, detection means for detecting that the photographic lens is not mounted, and control for prohibiting the operation of the drive means when the photographic lens is detected by the detection means And a control means for performing the above-mentioned operation. The a power consumption can be prevented.

Further, the camera provided with the viewfinder capable of switching the visual field range of the present invention is capable of exchanging the photographing lens, and corresponds to the normal photographing and the trimming photographing for designating the printing range at a predetermined trimming magnification. The camera body, the viewfinder for changing the magnification of the finder image by moving the finder optical system so that the range printed in correspondence with the switching between the normal shooting and the trimming shooting is the visual field range, and the finder optical system. Driving means for driving the image pickup lens, detection means for detecting that the photographing lens is not attached, and when the detection means detects that the photographing lens is not attached, the trimming magnification is set to be the smallest. Since the control means for controlling the driving means is included, After mounting the shadow lens, looking through the viewfinder, at the start of framing, there is an effect that easily locate the object.

Further, the viewfinder capable of switching the visual field range according to the present invention enables the normal photographing mode and the trimming photographing in which the range is designated and printed with a predetermined trimming magnification with respect to the range printed in the normal photographing mode. A viewfinder compatible with a trimming photographing mode and a panoramic photographing mode capable of performing a panoramic photographing in which the upper and lower parts of the range to be printed in the normal photographing mode are printed. Zooming means for changing the magnification of the finder image so that the range to be viewed is the viewing range, and viewing range switching means for switching the viewing range so that the range printed in the panoramic shooting mode is the viewing range. When the panoramic shooting mode is set, the zooming means sets a predetermined value. After forming a viewfinder image with a magnification, the viewfinder range switching means controls the printout range in the panoramic shooting mode so that the viewfinder range is displayed. If the camera is in a state other than wide, it is necessary to forcibly switch to the wide state when switching from that state to the panoramic shooting mode. Natural shooting can be performed without giving the photographer an unnatural impression that the part is limited.

Further, the viewfinder capable of switching the visual field range according to the present invention enables the normal photographing mode and the trimming photographing in which the range is designated and printed with a predetermined trimming magnification with respect to the range printed in the normal photographing mode. A viewfinder compatible with a trimming photographing mode and a panoramic photographing mode capable of performing a panoramic photographing in which the upper and lower parts of the range to be printed in the normal photographing mode are printed. Zooming means for changing the magnification of the finder image so that the range to be viewed is the viewing range, and viewing range switching means for switching the viewing range so that the range printed in the panoramic shooting mode is the viewing range. When the panoramic shooting mode is set, The viewfinder image is formed such that the operation for forming the viewfinder image at a magnification is completed after the operation for limiting the field of view, which indicates the range to be printed in the panoramic shooting mode by the field-of-view range switching means as the field of view range. And a control means for controlling the operation for restricting the field of view to be performed simultaneously or alternately at a predetermined time interval. If it is in the state, it is necessary to forcibly switch to the wide state when switching from that state to the panoramic shooting mode, but even if the viewing range is switched from the wide state, the upper and lower parts of the viewing range in the normal shooting state are limited. Because the negative image such as is eased,
The photographer can take natural pictures without feeling unnatural.

As described above, according to the configuration of the present invention, the viewfinder capable of properly and naturally showing the view range in the normal photographing mode, the trimming photographing mode and the panoramic photographing mode, and the camera equipped with the same. Can be realized.

[Brief description of drawings]

FIG. 1 is a sectional view showing the structure of an embodiment of the present invention.

FIG. 2 is a sectional view showing a state in which an embodiment of the present invention is applied to a single-lens reflex camera.

FIG. 3 is a diagram for explaining how to drive a zoom relay lens system used in an embodiment of the present invention.

FIG. 4 is a diagram for explaining driving of a zoom relay lens system used in an embodiment of the present invention.

FIG. 5 is a diagram for explaining adjustment of the third mirror used in the embodiment of the present invention.

6A and 6B are views for explaining the mechanism for limiting the visual field in the embodiment of the present invention.

FIG. 7 is a diagram showing a view of a finder that changes according to a field of view limiting mechanism according to an embodiment of the present invention.

FIG. 8 is a plan view showing the outer appearance of a single-lens reflex camera to which an embodiment of the present invention has been applied.

FIG. 9 is a block diagram showing a schematic configuration of an embodiment of the present invention.

FIG. 10 is a flowchart showing a sequence in step mode according to the embodiment of the present invention.

FIG. 11 is a flowchart showing a sequence in a step mode according to the embodiment of the present invention.

12 is a flowchart showing a MoveMIDDLE routine in the flowcharts of the embodiments of the present invention shown in FIGS. 10 and 11. FIG.

FIG. 13 is a diagram for explaining a trimming system.

FIG. 14 is a diagram for explaining the arrangement of the reflecting mirrors when the incident angles θ1 and θ2 of the optical axes on the fourth mirror 15 and the fifth mirror 18 are set to more than 45 ° in the example of the present invention.

FIG. 15 is a diagram for explaining the relationship between zooming and field of view limitation for smooth transition from the normal shooting mode to the panoramic shooting mode.

[Explanation of symbols]

 1 ... Shooting lens 2 ... Main mirror 3 ... Viewfinder optical system 4 ... Camera body 5 ... Film 6 ... AF sub-mirror 7 ... AF module 8 ... Focus plate 9 ... First condenser lens 10 ... First mirror 11 ... Second mirror 12 ... Relay system auxiliary lens 13 ... Third mirror 14 ... Zoom relay lens system 15 ... Fourth mirror 16 ... Second condenser lens 17 ... Field of view frame 18 ... Fifth mirror 19 ... Eyepiece 20 ... LCD 21 ... Infinder submirror 22 ... In Finder prism 23 ... Pupil position 24 ... Flash light emitting section 25 ... Flash condenser 26 ... Information recording device (information writing device) 31 ... Objective block 32 ... Zoom block 33 ... Eyepiece block 34, 35 ... Lens holder 36 ... Holder 37 ... Washer 41… Guide rod 2, 43 ... Pin 44 ... Spring 45, 46 ... Cam surface 47 ... Cam plate 48-54 ... Gear 55 ... Motor 56, 57 ... Cam plate surface 58, 59 ... Projection 60 ... Contact piece 61 ... Encoder board 71 ... Holder 72 ... Openings 73-75 ... Screw holes 77, 78 ... Spring 80, 81 ... Screws 91, 92 ... Field limiting plate 93 ... Drive lever 94, 95 ... Pin 96, 97 ... Oblong hole 98 ... Spring 99 ... Operating lever 100 ... Pin 101 ... Lever 102 ... Shaft 104-109 ... Edge 111 ... Contact piece 112-115 ... Pin 116-119 ... Oblong hole 121 ... Power switch 122 ... Mode change switch 123 ... Panorama mode switch 124, 125 ... EZ key 126 ... Shutter button 127 ... Display plate 141 ... Film 142 ... Predetermined part of emulsion surface 143 ... Drawing paper 150 ... memory 155 ... driver 160 ... CPU

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Funabashi 2-3-13 Azuchi-cho, Chuo-ku, Osaka Osaka International Building Minolta Camera Co., Ltd. (72) Makoto Ando 2-chome, Azuchi-cho, Chuo-ku, Osaka No. 13 Osaka International Building Minolta Camera Co., Ltd. (72) Inventor Ken Yano 2-33 Azuchi-cho, Chuo-ku, Osaka City Osaka International Building Minolta Camera Co., Ltd.

Claims (13)

[Claims] 1. A normal shooting mode, a trimming shooting mode in which trimming shooting is possible by designating a range with a predetermined trimming magnification with respect to a range printed in the normal shooting mode, and printing in the normal shooting mode. A viewfinder image that is compatible with a panoramic shooting mode that allows panoramic shooting in which the upper and lower parts of the range to be printed are printed, and the viewfinder image is such that the range printed corresponding to the trimming magnification is the viewing range. Zooming means for changing the zooming range, a viewing range switching means for switching the viewing range so that the range printed in the panoramic shooting mode is the viewing range, and the zooming mode when the panoramic shooting mode is set. A finder image with a predetermined magnification is formed by the doubling means and the subsequent zooming operation is prohibited. And a control unit that controls the range printed by the field-of-view range switching unit so as to indicate the range printed in the panoramic shooting mode as the field-of-view range. 2. When the panorama shooting mode is set, a memory for storing the trimming magnification immediately before setting is provided, and when the panorama shooting mode is released, the panorama is stored based on the trimming magnification stored in the memory. 2. The viewfinder capable of switching the visual field range according to claim 1, wherein the zooming means is controlled by the control means so as to restore the visual field range immediately before the setting of the photographing mode. 3. The variable magnification means is controlled by the control means so as to restore the visual field range based on a predetermined trimming magnification when the panoramic photography mode is released. A viewfinder with a switchable view range. 4. A pseudo zoom function for designating a range to be printed at a predetermined trimming magnification with respect to a range to be printed in normal shooting, and a range to be printed excluding upper and lower parts of a range to be printed in normal shooting mode. A camera having a panoramic shooting function, which corresponds to the pseudo zoom function, and a zooming unit that zooms the viewfinder image so that the range printed is the visual field range, and the panoramic shooting function is supported. And a field-of-view range switching unit that switches the field-of-view range so that the range printed is the field-of-view range, and when the panoramic shooting function is operated, a finder image of a predetermined magnification is formed by the scaling unit, and The visual field range switching means controls the range printed by the panoramic shooting function as the visual field range. A camera equipped with a viewfinder capable of switching a visual field range, characterized by having a control means for controlling. 5. The viewfinder according to claim 5, wherein the control means prohibits the magnification change of the finder image by the magnification change means during the operation of the panoramic photographing function. A camera. 6. A memory for storing a trimming magnification immediately before the operation of the panoramic photographing function is provided, and immediately before the operation of the panoramic photographing function is performed based on the trimming magnification stored in the memory when the panoramic photographing function is released. 6. The camera with a viewfinder capable of changing the visual field range according to claim 5, wherein the zooming means is controlled by the control means so as to restore the visual field range. 7. The variable magnification means is controlled by the control means so as to restore the visual field range based on a predetermined trimming magnification when the panoramic photographing function is released. A camera with a viewfinder that can switch the field of view. 8. An autofocus function and a manual focus function for a photographer to manually focus, and normal photography and trimming photography in which a print range is designated at a predetermined trimming magnification are possible. A viewfinder that can be used with various cameras, such as a focusing screen for confirming the focus state in the manual focus function, and zooming of the viewfinder image so that the range printed corresponding to the trimming magnification is the visual field range. And a zooming means for controlling the zooming of the finder image such that the zooming means increases the finder magnification when the autofocus function can be operated and the manual focus function can be operated. And a fine controllable field of view range. Dar. 9. A camera capable of performing normal shooting and trimming shooting for designating a print range at a predetermined trimming magnification, wherein a range to be printed corresponds to switching between the normal shooting and the trimming shooting. The trimming magnification is the highest in conjunction with the viewfinder for changing the magnification of the viewfinder image so that it is within the field of view, the main switch for turning on / off the power of the entire camera, and the ON / OFF operation of the main switch. A camera provided with a viewfinder capable of switching a visual field range, comprising: a control means for controlling the viewfinder so as to be small. 10. A camera body in which a photographing lens can be replaced, and which corresponds to a normal photographing and a trimming photographing for designating a print range at a predetermined trimming magnification, and a switch between the normal photographing and the trimming photographing. The finder for changing the magnification of the finder image by moving the finder optical system, the driving means for driving the finder optical system, and the photographic lens not mounted so that the range printed is the visual field range. And a control means for controlling the operation of the driving means when it is detected by the detection means that the photographing lens is not attached. A camera with a switchable viewfinder. 11. A camera body capable of exchanging a photographing lens, capable of performing normal photographing and trimming photographing for designating a print range at a predetermined trimming magnification, and switching between the normal photographing and the trimming photographing. The finder for changing the magnification of the finder image by moving the finder optical system, the driving means for driving the finder optical system, and the photographic lens not mounted so that the range printed is the visual field range. And a control means for controlling the driving means so that the trimming magnification becomes the smallest when the photographing lens detects that the photographing lens is not mounted. A camera with a viewfinder that can switch the field of view. 12. A normal photographing mode, a trimming photographing mode in which trimming photographing is possible by designating a range with a predetermined trimming magnification with respect to a range printed in the normal photographing mode, and a printing in the normal photographing mode. A viewfinder image that is compatible with a panoramic shooting mode that allows panoramic shooting in which the upper and lower parts of the range to be printed are printed, and the viewfinder image is such that the range printed corresponding to the trimming magnification is the viewing range. Zooming means for changing the zooming range, a viewing range switching means for switching the viewing range so that the range printed in the panoramic shooting mode is the viewing range, and the zooming mode when the panoramic shooting mode is set. After forming a viewfinder image with a predetermined magnification by the magnification means, And a control means for controlling the range printed by the changing means in the panoramic photography mode to be shown as a visual field range. 13. A normal photographing mode, a trimming photographing mode in which trimming photographing is possible by designating a range with a predetermined trimming magnification with respect to a range printed in the normal photographing mode, and a printing in the normal photographing mode. A viewfinder image that corresponds to a panoramic shooting mode in which panoramic shooting is possible, in which the upper and lower parts of the range to be printed are printed, and the viewable range is the range printed corresponding to the trimming magnification. Zooming means for changing the zooming range, a viewing range switching means for switching the viewing range so that the range printed in the panoramic shooting mode is the viewing range, and the zooming mode when the panoramic shooting mode is set. The operation for forming a finder image of a predetermined magnification by the magnification means is An operation for forming the finder image and an operation for limiting the visual field so as to end after the operation for limiting the visual field, which indicates the range printed as the visual field range in the panoramic shooting mode by the field range switching means. And a control means for controlling so as to be performed simultaneously or alternately at predetermined time intervals.