JP2000292833A - camera - Google Patents

Abstract

(57) [Summary] [PROBLEMS] For a camera which alternately uses the same photographing lens system for film photographing and digital photographing with an electronic image sensor, the photographing angle of view is easily ensured while sharing the viewfinder optical system. To provide a camera with a compact and simple configuration that can be checked at any time. SOLUTION: A photographing lens system composed of a plurality of lenses and changeable to at least two magnifications, a finder lens system composed of a plurality of lenses and changeable to at least two magnifications, and a photosensitive member on the photosensitive member by the photographing lens system A photographing mode selecting unit which can select a first photographing mode for exposing an image to the camera or a second photographing mode for recording an image on an electronic image pickup device by the photographing lens system. In a camera, the magnification of the finder lens system is changed so as to correspond to each photographing angle of view according to selection of the first or second photographing mode,
The finder lens system is configured to change a magnification by moving at least one of the lenses in an optical axis direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera capable of performing both film photography and photography by an electronic image pickup device. In particular, the present invention relates to a camera for film photography and an electronic image photography alternately using the same photographing lens system. The present invention relates to a camera that corrects a difference in a photographic field angle at the time of performing the correction by a combination of a photographic lens and a finder magnification.

[0002]

2. Description of the Related Art Heretofore, a camera in which a silver halide camera using a film and a digital camera using an electronic image sensor are integrated has been used.

In general, the screen size of an electronic image sensor is
It is smaller than the screen size of the silver halide film. For this reason, this kind of camera had independent photographing optical systems having different image magnifications in order to make the photographing angle of view the same.

On the other hand, there is a camera in which a silver halide camera and a digital camera are integrated by using the same photographing lens system.
In this case, there is a known display in which a difference in a shooting angle of view is displayed by inserting a field frame mask into a finder.

Japanese Patent Application Laid-Open No. 2-101444 discloses a finder structure of a film / still video combined camera in which film shooting and still video shooting by an electronic image pickup device are alternately enabled by the same shooting lens system. It has been disclosed. In this method, at least one of the angle of view or the magnification of the optical viewfinder is changed in accordance with the switching between film shooting and still video shooting so as to correspond to each shooting angle of view.

[0006]

However, among the above-mentioned conventional cameras, cameras having independent photographing optical systems having different image magnifications require a large space for the photographing optical system and increase the cost. There was a problem that became.

Further, in a camera in which a field frame mask is inserted into a finder, the field of view of the finder becomes extremely small, so that there is a problem that it is not easy to confirm a subject.

Further, in the finder structure of a film / still video camera disclosed in Japanese Patent Application Laid-Open No. 2-101444, a film objective lens and a CCD objective of a finder optical system are switched in accordance with switching between film shooting and still video shooting. Since the lens is slid in the direction orthogonal to the optical axis for switching, a space for retracting the objective lens is required for this switching.
In the viewfinder structure of the film / still video camera, two viewfinder optical systems having different image magnifications for film shooting and still video shooting can be provided independently, but the number of parts increases and the configuration becomes complicated. There was a problem of becoming.

In view of the above, the present invention has been made to solve the above-mentioned disadvantages of the prior art, and provides a single viewfinder optical system in a camera in which film photography and digital photography by an electronic image sensor are alternately performed using the same photographing lens system. It is an object of the present invention to provide a camera having a compact and simple configuration that can surely and easily confirm a photographing angle of view while sharing the same.

[0010]

The camera according to the present invention comprises a plurality of lenses, a photographing lens system which can be changed to at least two magnifications, and a plurality of lenses.
A finder lens system that can be changed to two magnifications, a first shooting mode in which an image is exposed on a photosensitive member by the shooting lens system, or a second shooting mode in which an image is recorded on an electronic image sensor by the shooting lens system And a photographing mode selecting means for selecting the first or second photographing mode by the photographing mode selecting means. The magnification of the finder lens system is adjusted so as to correspond to each photographing angle of view. In the changing camera, the finder lens system is characterized in that at least one of the lenses is moved in an optical axis direction to change a magnification.

In particular, the magnification of the finder lens system is
It changes corresponding to the photographing angle of view of the photosensitive member at each magnification of the photographing lens system, and at least one of the magnifications is different from the photographing angle of view of the electronic image sensor at a predetermined magnification of the photographing lens system. It is characterized in that it is configured to change correspondingly.

The first mode is selected by the photographing mode selecting means.
A photographing magnification selecting means is provided for selecting a photographing lens system magnification regardless of which photographing mode is selected or the second photographing mode.

According to the present invention, when the first photographing mode or the second photographing mode is selected by the photographing mode selecting means, the photographing lens system is changed to a magnification selected by the photographing magnification selecting means. And a lens driving means for driving the finder lens system so as to have a magnification corresponding thereto.

[0014]

An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal sectional view showing a schematic configuration of a camera according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a film / digital photographing switchable camera, 2 denotes a photographing lens system capable of zooming by moving on an optical axis, 3 and 4.
Reference numeral denotes an objective lens that can be changed in magnification by moving on the optical axis, reference numeral 5 denotes a prism, reference numeral 6 denotes an eyepiece, reference numeral 7 denotes a film, and reference numeral 8 denotes an electronic image sensor that converts an optical image into an electric image signal.

A finder lens system is constituted by a real image variable magnification finder comprising objective lenses 3 and 4, a prism 5, and an eyepiece 6. The taking lens system 2 includes a plurality of lens groups.

The photographing lens system 2 and the finder lens system have independent optical axes.
Are arranged behind the film 7 with a predetermined gap therebetween.

The operation of the camera 1 having the above configuration will be described. FIG. 1A shows the state of the photographing lens system 2 and the finder lens system when the photographing mode is film photographing and the photographing magnification is WIDE. FIG. 1B shows the photographing mode in film photographing. Time
FIG. 4C shows the state of the photographing lens system 2 and the viewfinder lens system when the photographing magnification is MIDDLE, and FIG. 4C also shows the photographing lens system 2 and the viewfinder when the photographing mode is film photographing and the photographing magnification is TELE. FIG. 3D is a diagram illustrating a state of the lens system, and FIG. 4D is a diagram illustrating a state of the photographing lens system 2 and the finder lens system when the photographing mode is digital (electronic image pickup device) photographing.

In FIG. 1A, the objective lenses 3 and 4 are moved along the optical axis so that the magnification of the finder lens system corresponds to the angle of view of the film 7 by the photographing lens system 2 in the WIDE state. Positioned.

In FIG. 3B, the objective lens 3 is set so that the magnification of the finder lens system corresponds to the angle of view of the film 7 by the photographic lens system 2 in the MIDDLE state.
And 4 are moved on the optical axis for positioning.

In FIG. 1C, the objective lenses 3 and 4 are moved on the optical axis so that the magnification of the finder lens system corresponds to the angle of view of the film 7 by the photographing lens system 2 in the TELE state. Positioned.

In FIG. 2D, at the time of digital photographing,
The taking lens system 2 has the lowest WID (predetermined magnification) WID
In the E state, the finder lens system is arranged at the same position as the TELE state at the highest magnification during film shooting, and the magnification is a value corresponding to the shooting angle of view of the electronic imaging element 8 by the shooting lens system 2 in the WIDE state. Become. In other words, the configuration is such that the difference in shooting angle of view due to the difference between the screen size of the electronic image sensor 8 and the screen size of the film 7 is absorbed by the magnification ratio of the finder lens system within the zoom range during film shooting. ing.

For example, when an IX240 film is used as the film 7 and a 1/2 CCD is used as the electronic image pickup device 8, the screen size of the IX240 film is about 2 in C size.
4.6 × 16.7mm, 1/2 CCD screen size is about 6.
Since it is 4 × 4.8 mm, the difference in the angle of view is IX240
The film is about 3.7 times the 1/2 CCD. So, W
When the focal length of the IDE is set to 23 mm and the focal length of the TELE is set to about 85 mm, the photographing lens system 2 is set to the WIDE state and the finder lens system is set to the TELE
By setting it in the state, it becomes possible to make the shooting angle of view substantially equal.

At the time of this digital photographing, the film 7 positioned in front of the electronic image pickup device 8 at the time of film photographing is used.
Is configured to retreat.

FIG. 2 is a block diagram of a lens driving mechanism for driving a photographic lens system and a finder lens system of the camera of the present invention.

FIG. 2A shows a state in which the shooting mode of the camera 1 shown in FIG. 1 is set to the film shooting mode, and FIG. 2B shows a state in which the shooting mode of the camera 1 shown in FIG. This shows the state when the mode is set.

In the figure, reference numeral 9 denotes a motor which is a drive actuator; 10, a pinion gear which is press-fitted into a rotating shaft of the motor 9; 11, 12, and 13, reduction gears for reducing the rotation from the pinion gear 9; The sun gear meshing with the sun gear 15 is the planetary gear meshing with the sun gear 14, 1
Reference numeral 6 denotes a planetary lever which supports the sun gear 14 and the planetary gear 15 at both ends. The planetary lever 16 is pivotally supported by the camera 1 main body so as to be rotatable in the direction of arrow A about a shaft 16a at one end, which also serves as a rotation center axis of the sun gear 14.
The planetary gear 15 is rotatably supported about a shaft 16b at the other end of the planetary lever 16, and rotates together with the planetary lever 16 about a shaft 16a.

Reference numeral 17 denotes a cam barrel for moving each lens group of the photographic lens system 2 in the optical axis direction in a variable magnification manner; The lens holder 19 has a cam pin 19a,
19b and 19c are provided in a direction perpendicular to the optical axis.

The cam pins 19a, 19b, and 19c are fitted in the rectilinear grooves (not shown) of the rectilinear cylinder 18 and the cam grooves (not shown) of the cam cylinder 17, respectively, to rotate the cam cylinder 17. The lens holder 19 moves in the optical axis direction due to the rotation of the cam barrel 17. Similarly, other groups (not shown) of the photographing lens system 2 move in the optical axis direction by rotation of the cam barrel 17.

The cam cylinder 17 has a gear 1 on its outer periphery.
7a, when the shooting mode is the film shooting mode as shown in FIG. 7A, the planetary gear 15 is engaged to transmit the rotation, and as shown in FIG. In the mode, the engagement with the planetary gear 15 is released.

A finder cam cylinder 21 is provided with a gear 21 a at an end of the finder cam cylinder 21 and meshes with the sun gear 14.

The cam portion 21 of the finder cam cylinder 21
A cam pin 3a of the objective lens 3 and a cam pin (not shown) of the objective lens 4 are fitted or abutted on b, and the objective lenses 3 and 4 move in the optical axis direction by rotation of the finder cam cylinder 211.

With the above configuration, when the photographing mode is the film photographing mode, the planetary lever 16 rotates in the direction of arrow A (counterclockwise in the figure) as shown in FIG.
The planet gear 15 meshes with the gear 17a of the cam barrel 17. Thus, the rotation of the motor 9 is controlled by the gear 17 a of the cam cylinder 17 and the finder cam cylinder 21 via the pinion gear, the reduction gears 11, 12, 13, the sun gear 14, and the planetary gear 15.
, The photographing lens system 2 and the finder lens system change the magnification in the optical axis direction.

When the photographing mode is the digital photographing mode, as shown in FIG.
Rotating in the direction (clockwise in the drawing), the planetary gear 15 is disengaged from the gear 17a of the cam barrel 17. The rotation of the motor 9 is controlled by a pinion gear, reduction gears 11, 12, and 1.
3. The light is transmitted only to the gear 21a of the finder cam barrel 21 via the sun gear 14, and only the finder lens system moves in the optical axis direction. As will be described later, since the photographing lens system 2 has already been set to the WIDE which is the photographing magnification in the digital photographing mode, there is no need to move the magnification.

FIG. 3 is a detailed view of the shooting mode dial of the camera of the present invention. FIG. 3A is a front view, and FIG.
Is a rear view.

In FIG. 2A, reference numeral 22 denotes a photographing mode dial which is disposed on the back of the camera 1 shown in FIG. It is a mode indicator displayed on the back exterior part.

The photographing mode dial 22 is rotatable with respect to the camera 1 body about an axis 22a, and a lock indicator L (22b) indicating that the main switch is off is provided on the surface of the photographing mode dial 22. ), The shooting mode is film shooting, and the focal length of the shooting lens system 2 is W
A WIDE index W (22c) indicating that it is IDE, a shooting mode is film shooting, a MIDDLE index M (22d) indicating that the focal length of the shooting lens system 2 is MIDDLE, a shooting mode is film shooting, TE indicating that the focal length of the taking lens system 2 is TELE
An LE index T (22e) and a digital index D (22f) indicating that the shooting mode is digital shooting are printed.

As shown in FIG. 3B, a dowel pin 22g is provided on the back side of the photographing mode dial 22, and when the photographing mode dial 22 is rotated, the dowel pin 22g is moved to a planetary lever described later. 16 projections 16
The configuration is such that the planetary lever 16 is displaced via d.

The state shown in FIG. 3A is a lock position where the main switch is off since the lock index L is at the position of the mode index 23. When the photographing mode dial 22 is rotated 45 degrees clockwise from this locked position, the WIDE index W matches the position of the mode index 23 with the WI.
It becomes the DE position. When the photographing mode dial 22 is rotated clockwise by 90 degrees from the lock position, MIDDL
When the E index M rotates 135 degrees clockwise from the MIDDLE position and the lock position that match the position of the mode index 23, T
When the ELE index T is rotated 90 degrees counterclockwise from the TELE position where the mode index 23 matches the position of the mode index 23 and the lock position, the digital index D stops at the digital position where the position of the mode index 23 matches, and each position by clicking. ing.

As described above, the shooting mode dial 22 is
The camera also functions as a shooting mode selection means, a shooting magnification selection means, and a main switch.Rotating clockwise from the lock position changes the shooting mode to film shooting, and rotating counterclockwise from the lock position changes the shooting mode to digital shooting. Become. Therefore, the shooting magnification can be selected only when the shooting mode is film shooting.

When the photographing mode dial 22 is rotated counterclockwise by 90 degrees from the lock position to the digital position, it is rotated clockwise at the stage before the digital position to set the WID.
Even if any of E, MIDDLE, and TELE is selected, the magnification of the photographing lens system 2 is set to WIDE because the WIDE position must be passed immediately before the lock position.

Therefore, in this embodiment, when the photographing mode dial 22 is rotated counterclockwise to select the digital photographing mode, the magnification of the photographing lens system 2 is already set to the low magnification side of WIDE. Will be.

FIG. 4 is an explanatory diagram of a switching mechanism of the planetary lever 16. 2A is a rear view of a part of FIG. 2A, and FIG. 4B is a rear view of a part of FIG. 2B.

In FIG. 4, the same members as those in FIG. 2 are denoted by the same reference numerals, and the description of those portions will be omitted. A torsion spring 24 is attached to the rotation center shaft 16a of the planetary lever 16, and one end of the torsion spring 24 is a stopper 25 on the camera 1 body side.
a. On the other hand, the shaft 16b of the planetary lever 16
On the back surface side of, a rectangular projection 16 d having a long side in a direction parallel to the planetary lever 16 is provided. A dowel 16c is provided at an end of the projection 16d on the side of the torsion spring 24, and the other end is hooked on a stopper 25b of the camera 1 body. The other end of the torsion spring 24 is hooked on the dowel 16c of the planetary lever 16, and is urged clockwise in the figure by a predetermined elastic force.

The motor 9, the pinion gear 10, the reduction gears 11, 12, 13, the sun gear 14, the planetary gear 15, the planetary lever 16, the cam barrel 17, and the straight barrel 1 shown in FIG.
8, a finder cam cylinder 21 and a torsion spring 24 shown in FIG.

The photographing mode dial 22 shown in FIG.
Lock position, WIDE position, MIDDLE position, and T
When in the ELE position, as shown in FIG. 4A, the dowel pin 22g of the photographing mode dial 22 is
6 at a position away from the projection 16d of the planetary lever 1
The projection 16 has a projection 16 by the urging force of the torsion spring 24.
d is positioned in a state where it comes into contact with the stopper 25b. In this state, the planet gear 15 is the gear 17a of the cam barrel 17.
Mesh with.

On the other hand, when the photographing mode dial 22 is rotated to the digital position, the dowel pin 22g of the photographing mode dial 22 contacts the projection 16d of the planetary lever 16 as shown in FIG. Of the planetary lever 16 around the shaft 16a against the urging force of arrow B
Direction (counterclockwise in the figure) and rotate the planetary lever 16
Are positioned in a state where the protrusion 16d is separated from the stopper 25b. In this state, the planet gear 15 is disengaged from the gear 17a of the cam barrel 17, and the photographing lens system 2 is not driven. As a result, only the finder lens system can be changed in magnification.

As described above, the rotation of the planetary lever 16 in conjunction with the switching of the photographing mode dial 22 switches whether the planetary gear 15 meshes with the gear 17a of the cam barrel 17 and switches the state of the photographing lens system 2. The presence or absence of the zoom movement is switched.

FIG. 5 is a block diagram showing the electrical configuration of the camera of the present invention.

In the figure, reference numeral 26 denotes a control circuit including a microcomputer; 27, a camera main switch;
8 is a shooting mode selection switch (shooting mode selection means),
29 is a photographing magnification selection switch (photographing magnification selecting means), 3
Reference numeral 0 denotes a film detecting device for detecting whether or not the film is set at the aperture position of the camera with a light detecting element or the like, 31 denotes a lens driving device (lens driving unit), 32
Is a magnetic information read / write device that writes magnetic information such as shooting conditions on a film by a magnetic head or the like, reads recorded magnetic information, 33 is a film feeder, 34 is a photometer that measures the brightness of a subject, Reference numeral 35 denotes a distance measuring device for calculating distance measuring information of a subject, 36 denotes a focus lens driving device, and 37 denotes a shutter driving device.

The functions of the main switch 27, the photographing mode selection switch 28, and the photographing magnification selection switch 29 are included in the function of the photographing mode dial 22 (see FIG. 3).

The lens driving device 31 includes the motor 9, the pinion gear 10, the reduction gears 11, 12, and 13 shown in FIG.
It is composed of a sun gear 14, a planetary gear 15, a planetary lever 16, a cam barrel 17, a rectilinear barrel 18, a finder cam barrel 21, and a torsion spring 24 (see FIG. 4), a main switch 27, a shooting mode selection switch 28, and shooting. It has a function of driving the photographing lens system 2 and the finder lens system according to the switching of the magnification selection switch 29.

The film feeder 33 feeds the film to an unexposed frame by a motor or the like based on the magnetic information of the film, rewinds the film into the cartridge based on the signal of the photographing mode selection switch 28, It has a function to rewind the film into the cartridge after the photographing is completed.

The focus lens driving device 36 moves the focus lens in the photographing lens in the optical axis direction based on the distance measurement information from the distance measuring device 35 and the photographing mode information of the photographing mode selection switch 28 to focus on a film or electronic image. It has a function to match with the element 8 (see FIG. 1).

The shutter driving device 37 includes a photometric device 34
It has a function of opening and closing the shutter based on the photometric information from the camera and the shooting mode information of the shooting mode selection switch 28 to record an image on the film or the electronic image sensor 8.

Next, a part of the operation of the camera having the above configuration will be described.
This will be described with reference to the flowchart of FIG. 6 and FIG.

When the main switch 27 is turned on by rotating the photographing mode dial 22 from the lock position, first, the photographing mode is determined (step # 101, hereinafter simply referred to as # 101, etc.). As shown in FIG. 3A, when the photographing mode dial 22 is rotated clockwise, the photographing mode selection switch 28 is kept off and the film photographing mode is determined, and then the photographing magnification is determined (# 102). When the photographing mode dial 22 is at the WIDE position, the photographing magnification selection switch 29 comes into contact with 29a, the photographing magnification selection is determined to be WIDE, and the photographing lens system 2 and the finder lens system are moved to the WIDE position by the lens driving device 32. It is driven (# 103). When the photographing mode dial 22 is at the MIDDLE position, the photographing magnification selection switch 29 is turned off, and the photographing magnification selection is set to MI.
The DDLE is determined, and the lens driving device 32 drives the photographing lens system 2 and the finder lens system to the MIDDLE position (# 104). When the photographing mode dial 22 is at the TELE position, the photographing magnification selection switch 29 comes into contact with 29b, the photographing magnification selection is determined to be TELE, and the photographing lens system 2 and the finder lens system are moved to the TELE position by the lens driving device 32. Driven (# 10
5).

Next, it is detected by the film detecting device 30 whether or not the film 7 is set at the aperture position of the camera 1 (# 106). If the film 7 has already been set, the process proceeds to step # 111. If is not set, the film is fed out of the cartridge by the film feeder 33, and the film is fed to the unexposed frame based on the magnetic information of the film by the magnetic information reader / writer 32 (# 107), and then the step # Proceed to 111.

On the other hand, if the photographing mode dial 22 is turned counterclockwise as shown in FIG. 3A in the photographing mode determination in step # 101, the photographing mode selection switch 28 is turned on and the digital The mode is determined to be the photographing mode, and the finder lens system is driven to the high magnification side TELE position by the lens driving device 31 (# 10).
8). At this time, the magnification of the photographing lens system 2 is, as described above,
WIDE on the low magnification side is set. Next, the film detection device 30 detects whether the film 7 is set at the aperture position of the camera 1 (# 10).
9) If film 7 is not set, step #
The process proceeds to step 111, and if the film 7 has already been set, the film 7 is rewound into the cartridge by the film feeding device 33 (# 110), and then the process proceeds to step # 111.

In step # 111, the process waits until the switch SW1 is turned on by half-pressing the release button (not shown). Here, the determination of the shooting mode and the shooting magnification is continued until the switch SW1 is turned on. When the switch SW1 is turned on, the brightness of the subject is measured by the photometric device 34 (# 112). Next, distance measurement information to the subject is calculated by the distance measuring device 35 (# 113). Then, based on the obtained distance measurement information and photographing mode information (# 101), the focus lens in the photographing lens system 2 is driven in the optical axis direction by the focus lens driving device 36 to focus on the film 7 or the electronic device. Adjust to the image sensor 8 (#
114). Next, the state of the switch SW1 is determined again (# 115). If the switch SW1 is off, the process returns to step # 101. Therefore, when the distance measurement or the change of the photographing mode is performed without photographing, the finger is once released from the release button, the switch SW1 is turned off, and the operation from step # 101 is repeated again.

In step # 115, if the switch SW1 is on, the state of the switch SW2 is determined by fully pressing the release button (not shown) (# 116).
If it is off, the process returns to step # 115 to wait for the switch SW1 to be turned off or the switch SW2 to be turned on. If the switch SW2 is turned on, step #
The shutter is driven by the shutter drive device 37 based on the subject luminance information at 112 and the photographing mode information obtained at step # 101, and an image is recorded on the film 7 or the electronic photographing element 8 (# 117).

Next, the photographing mode is determined again (# 11).
8) If the photographing mode is film photographing, magnetic information such as photographing information is written on the film by the magnetic information read / write device 32 while the film 7 is wound up to the next frame by the film feeding device 33 (# 119). Then, the process proceeds to step # 120. On the other hand, if the shooting mode is digital shooting, the process directly proceeds to step # 120.

In step # 120, the switch SW
1 is determined, and if the switch SW1 is on, the process returns to step # 112 to repeat the above operation again.
On the other hand, if the switch SW1 is off, the process ends.

As described above, in the camera of the present embodiment, which switches between film photography and digital photography,
In the film photographing mode, the photographing magnification of the photographing lens system 2 can be selected from three positions of TELE, MIDDLE and WIDE, and the magnification of the finder lens system is TEL.
E, MIDDLE, and WIDE correspond to the respective angle of view.

On the other hand, in the digital photographing mode, the photographing magnification of the photographing lens system 2 is set to WIDE, and the magnification of the finder lens system is set to the value of TELE so as to correspond to the photographing angle of view of the electronic image pickup device 8. .

Accordingly, while the photographing lens system 2 and the finder lens system are shared between the film photographing mode and the digital photographing mode, the angle of view of each photographing can be reliably and easily confirmed by the finder lens system.

In the camera of this embodiment,
The photographing mode dial 22 is configured to serve as a photographing mode and a photographing magnification selection switch, and the photographing magnification is set to TELE, MIDDLE, W only in the film photographing mode.
Although it is possible to select three positions of IDE and not to select a photographing magnification at the time of digital photographing, the present invention is not limited to this configuration, and even when the digital photographing mode is selected, a plurality of photographing lens systems 2 can be selected. It is also possible to adopt a configuration in which a lower magnification can be selected.

In this case, it goes without saying that the magnification of the finder lens system is changed to the higher magnification in accordance with the photographing angle of view of the electronic image pickup device 8 at the magnification of the selected photographing lens system 2.

[0069]

As described above, according to the present invention, in a camera capable of switching between film photography and digital photography, the viewfinder lens system is constructed so as to be able to zoom by moving the lens in the optical axis direction. A first photographing mode in which an image is exposed on a film by a photographing lens system with a simple configuration without taking up a retracting space of a lens system as in the related art, and an image on an electronic image sensor by a photographing lens system. One photographic lens system and one finder lens system can be shared with the second photographic mode for recording.

In particular, lens driving means for changing the magnification of the photographing lens system and the finder lens system according to the selection of the first photographing mode or the second photographing mode is provided. In the second photographing mode, the photographing lens system and the finder lens system are shared, and the finder lens system can reliably and easily confirm the photographing angle of view.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view of a camera showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing the configuration and operation of a lens driving mechanism that drives a photographing lens system and a finder lens system.

FIG. 3 is an explanatory diagram showing a configuration of a shooting mode dial;

FIG. 4 is an explanatory diagram showing the configuration and operation of a planetary lever switching mechanism.

FIG. 5 is a block diagram showing an electric configuration of the camera of the present invention.

FIG. 6 is a flowchart showing a processing procedure of a schematic operation of the camera of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Camera 2 Photographing lens system 3, 4 Objective lens 5 Prism 6 Eyepiece 7 Film 8 Electronic imaging device 9 Motor 10 Pinion gear 14 Sun gear 15 Planetary gear 16 Planetary lever 22 Photographing mode dial 24 Torsion spring

Claims (5)

[Claims] 1. A photographing lens system comprising a plurality of lenses and changeable to at least two magnifications, a finder lens system comprising a plurality of lenses and changeable to at least two magnifications, and a photosensitive member by the photographing lens system A photographing mode selecting means for selecting a first photographing mode for exposing an image thereon or a second photographing mode for recording an image on an electronic image pickup device by the photographing lens system; In a camera for changing a magnification of the finder lens system so as to correspond to each shooting angle of view according to selection of the first or second shooting mode, the finder lens system controls at least one of the lenses to light. A camera characterized in that the magnification is changed by moving in the axial direction. 2. The magnification of the finder lens system changes in accordance with the photographing angle of view of the photosensitive member at each magnification of the photographing lens system, and at least one of the magnifications of the photographing lens system varies. 2. The camera according to claim 1, wherein the camera is configured to change in accordance with a shooting angle of view of the electronic image sensor at a predetermined magnification. 3. A photographing magnification selection means for selecting a magnification of a photographing lens system regardless of which one of the first photographing mode and the second photographing mode is selected by the photographing mode selecting means. The camera according to claim 1, wherein 4. When the first photographing mode or the second photographing mode is selected by the photographing mode selecting means, the photographing lens system is set to a magnification selected by the photographing magnification selecting means. 4. The camera according to claim 1, further comprising lens driving means for moving the finder lens system so as to move the finder lens system to a magnification corresponding to the movement. 5. The predetermined magnification of the photographing lens system selectable by the photographing magnification selecting means when the second photographing mode is selected by the photographing mode selecting means, the predetermined magnification of the at least two magnifications. Of which, the lower magnification is the magnification of the finder lens system corresponding thereto,
The camera according to claim 1, 2, 3, or 4, wherein a higher magnification is selected from the at least two magnifications.