JP3077322B2 - Camera capable of trimming shooting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention
The present invention relates to a camera capable of performing trimming photographing capable of performing pseudo telephoto photographing by trimming.

[0002]

2. Description of the Related Art Conventionally, photographing lenses (zoom lenses)
In conjunction with zooming (changing the focal length), a so-called zoom finder (hereinafter referred to as a zoom finder) that moves the finder magnification lens in the direction of its optical axis to change the finder magnification according to the focal length of the photographing lens. ) Have been proposed.

On the other hand, there is also a camera capable of so-called trimming photography in which information (trimming information) for printing only a predetermined trimming area in an exposure area formed on a film by a shutter release is recorded, for example, in a margin of the film. Known (JP-A-61-2854)
No. 32 publication). The recorded trimming information is read by the laboratory, and based on the read information, only the trimming area is enlarged and printed. Since the trimming area is smaller than the print area for normal shooting, the shooting range is changed in accordance with switching from the normal shooting mode to the trimming shooting mode, and the finder magnification is changed in conjunction with the switching. Need to change.

A camera disclosed in Japanese Patent Application Laid-Open No. 61-285432 is provided with a photographing zoom lens zoomed by a zoom lens barrel and a zoom finder, and the zoom lens and the zoom finder are configured to interlock with each other. I have. More specifically, when the zoom lens barrel is moved further to the long focal length side than the longest focal length position (hereinafter, referred to as a telephoto end) of the photographing zoom lens, the photographing zoom lens is automatically moved to the normal position at the same position. The mode is switched from the shooting mode to the trimming shooting mode, and the zoom finder is further zoomed up. On the other hand, if the zoom lens barrel is moved further to the short focal length side than the shortest focal length position of the zoom lens (hereinafter referred to as the wide end), the zoom lens and the zoom finder are automatically trimmed from the normal shooting mode at the same position. Switch to mode. In this way, the finder magnification of the zoom finder is changed in conjunction with switching between the trimming shooting mode and the normal shooting mode.

[0005]

However, the conventional camera as disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 61-285432 is capable of changing the magnification during trimming photographing by zooming with a zoom finder. There is a problem that the structure of the camera itself becomes complicated and the camera becomes large.

SUMMARY OF THE INVENTION It is an object of the present invention to set a finder magnification corresponding to a photographing mode and a focal length of a photographing lens in conjunction with switching of the photographing mode with a simple configuration without increasing the size of the camera. Another object of the present invention is to provide a camera capable of performing trimming photography.

[0007]

The present invention will be described with reference to FIGS. 1 and 2 showing an embodiment. The present invention is directed to a normal photographing mode for printing the entire photographing screen and a part of the photographing screen. A trimming photographing mode for trimming to obtain a pseudo telephoto effect, a photographing zoom lens, first driving means for zooming the photographing zoom lens with the operation of the zoom operation member 2, and a zoom operation The present invention is applied to a camera capable of performing trimming photographing including a zoom finder 4 which is zoomed in conjunction with a member 2 and changes a visual field range (magnification). The above-mentioned object is achieved by a converter which is inserted into the optical path of the zoom finder 4 in one of the normal shooting mode and the trimming shooting mode, and changes the finder magnification separately from the zooming of the zoom finder 4. Lens C
1, C2, in conjunction with the operation of the zoom operation member 2,
A second driving unit 60 for inserting and removing the converter lenses C1 and C2 into and from the optical path of the zoom finder 4, and a connecting unit 61 for controlling transmission of the operation of the zoom operation member 2 to the second driving unit 60; And the zoom operation member 2 is configured to be movable between a zoom drive range for driving the first drive means in the normal photographing mode and outside the zoom drive range, and the zoom operation member 2 is When the zoom operation member 2 is moved out of the zoom drive range and then returned to the zoom drive range again, the connecting means 61 transmits the operation of the zoom operation member 2 to the second drive means 60, and the zoom operation member 2 Is moved in a direction from the outside of the zoom drive range to the zoom drive range, the second driving unit 60 inserts the converter lenses C1 and C2. It is achieved by performing. According to a second aspect of the present invention, in the camera according to the first aspect, the second driving unit 60 is connected to the first driving unit 60.
The second driving means 60 is configured to be movable between a movable position and a second movable position, and moves from one movable position to the other movable position in conjunction with the operation of the zoom operation member 2. Is to insert and remove the converter lenses C1 and C2. Furthermore, the invention of claim 3 provides:
3. The camera according to claim 2, wherein the biasing unit 22 biases the second driving unit 60 to the first movable position, and the second driving unit 60 includes the second driving unit 60.
A locking means 62 which locks to the second driving means 60 when it is moved to the movable position to suppress the movement, and releases the locking of the second driving means 60 by the locking means 62. A lock release means 63 is provided, and a first out-of-zoom driving range corresponding to the wide side from the wide end of one of the normal shooting mode and the trimming shooting mode, and the other mode, out of the zoom driving range. A second outer driving range corresponding to the tele side from the tele end of the zoom operation member. When the zoom operating member 2 is moved to the second outer zoom driving range and then returned to the zoom driving range again, the connection is established. When the means 61 moves the second driving means 60 from the first movable position to the second movable position, and the zoom operation member 2 is moved to the first out-of-zoom driving range, the unlocking means 6 There is such as to release the engagement of the second drive means 60 of the locking means 62.

[0008]

[Action]

When the zoom operation member 2 is moved out of the zoom drive range and then returned to the zoom drive range again, the connecting means 61 can transmit the operation of the zoom operation member 2 to the second drive means 60. State. When the zoom operation member 2 is moved in a direction from the outside of the zoom drive range to the zoom drive range, the second drive means 60 causes the converter lenses C1 and C2 to move in the zoom type in conjunction with the operation of the zoom operation member 2. The finder 4 is inserted into and removed from the optical path. When the converter lenses C1 and C2 are inserted into and removed from the optical path of the viewfinder 4, the magnification is changed, and the magnification becomes a magnification corresponding to the normal photographing mode or the trimming photographing mode. Thereafter, if the zoom finder 4 is zoomed by the first driving means, the field of view can be changed in accordance with zooming of the photographing zoom lens. When the zoom operating member is moved out of the second zoom driving range and then returned to the zoom driving range again, the connecting means is connected.
1 moves the second driving means 60 from the first movable position to the second movable position. When the second driving means 60 is moved to the second movable position, the locking means 62 engages with the second driving means 60 to suppress the movement. Next, when the zoom operation member 2 is moved out of the first zoom drive range, the lock release means 63 releases the engagement between the lock means 62 and the second drive means 60, and the second drive means 60 It is moved to the first movable position by the urging means 22. During this movement, the second driving means 60
Indicates that the converter lenses C1 and C2 are a zoom type finder 4.
Into and out of the optical path of. These converter lenses C1, C2
Is inserted into and removed from the optical path of the viewfinder 4, and the magnification is changed, and the magnification corresponding to the normal photographing mode or the trimming photographing mode is obtained. Thereafter, if the zoom finder 4 is zoomed by the first driving means, the field of view can be changed in accordance with zooming of the photographing zoom lens.

In the means and means for solving the above problems which explain the constitution of the present invention, the drawings of the embodiments are used to make the present invention easy to understand. However, the present invention is not limited to this.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view showing the configuration of a viewfinder according to an embodiment of a camera capable of performing trimming photographing according to the present invention. The camera according to the present embodiment includes a normal photographing operation for instructing printing of the entire rectangular exposure area 51 on the film 50 shown in FIG.
It is possible to perform trimming photographing for instructing only printing, and the print magnification during trimming photographing is larger than that during normal photographing. Here, the exposure area 51 is 24 mm long and 36 mm wide in the case of a normal 35 mm film 50.
mm, the vertical dimension of the trimming area 52 is A, and the horizontal dimension is B, the trimming magnification M at the time of trimming photographing with respect to the trimming magnification at the time of normal photographing can be obtained from the formula: M = 24 / A = 36 / B.

Switching between a normal photographing mode for performing normal photographing and a trimming photographing mode for performing trimming photographing is instructed by operating a mode changeover switch S5 shown in FIG. Then, the trimming information is recorded, for example, in the margin of the film. As the recording method, various methods such as optical, electric or magnetic can be considered. Also, the recording area is not limited to the margin of the film, and may be recorded in a predetermined recording area of a cartridge, for example. The recorded trimming information is read by the lab, and based on the read information, only the trimming area 52 is enlarged and printed.

FIG. 2 is a perspective view showing the structure of the finder of the camera. Reference numeral 2 denotes a zoom ring that forms the taking lens barrel 1 and houses a zoom lens optical system (not shown) therein. A gear portion 2a formed on the outer peripheral surface of the zoom ring 2.
Gear G1 is meshed with the zoom lens drive motor 42.
The zoom ring 2 rotates with the rotation of the gear G1 by (FIG. 4), and the focal length of the zoom optical system changes according to the amount of rotation by a drive system (not shown). The rotation of the zoom ring 2 is transmitted to the crown gear 3a of the cam 3 via the gear portion 2a and the gears G2 to G7 in order, and the rotation of the gear G7 causes the cam 3 to rotate about the shaft 3b. Cam 3
Are formed with two cam holes 3c and 3d, respectively, and the cam holes 3c and 3d move as the cam 3 rotates.

Reference numeral 4 denotes a zoom finder, which is composed of a pair of objective lenses L1, L2 held by lens holders 5, 6, mirrors M1, M2, and a prism P.
, A field lens 7, a field frame 8, and an eyepiece 9. The objective lens L1 is opposed to an objective window (not shown) provided at the front of the camera body, and subject light from the objective window passes through the lenses L1 and L2, is reflected by the mirror M1, and is reflected by the mirror M1. After passing through the field lens 7, the light forms an image near the field frame 8. The photographer observes this image through the eyepiece 9 via the prism P and the mirror M2.

The lens holders 5 and 6 are slidably supported in the front-rear direction of the camera (in the direction of the optical axes of the objective lenses L1 and L2) with respect to the guide rod 10, and cam followers 5a and 6a formed on the holders 5 and 6 are provided. Are engaged with the cam holes 3c and 3d of the cam 3, respectively. Therefore, the holders 5 and 6 move the guide rods 1 by the movement of the cam holes 3c and 3d accompanying the rotation of the cam 3.
0, the distance between the objective lenses L1 and L2 changes, and the finder magnification is changed.

Reference numeral 21 denotes a drive ring which is rotatably fitted to the zoom ring 2. The drive ring 21 rotates completely independently of the zoom ring 2.

FIG. 3 is a perspective view showing the structure of the finder and the converter lens. In this embodiment, two types of converter lenses are prepared: a wide converter lens C1 used in the normal shooting mode and a teleconverter lens C2 used in the trimming shooting mode. The wide converter lens C1 includes a negative lens L5 and a positive lens L6.
Reference numeral 2 includes a positive lens L7 and a negative lens L8. These wide and teleconverter lenses C1,
One of the two converter lenses C2 is disposed in the optical path of the finder 4 in front of the objective lens L1 to be used. When one of the converter lenses C1 and C2 is disposed in the optical path of the finder 4, the other converter lens C1 is used. ,
C2 is retracted from this optical path (details will be described later).

Here, the magnification required for the converter lenses C1 and C2 will be described. The minimum magnification of the zoom finder 4 is Mzw, the maximum magnification is Mzt, the magnification of the wide converter lens C1 is Mwc, and the teleconverter lens C
The magnification of 2 is Mtc. Wide converter lens C1
Is used, the magnification is Mzw × Mwc to Mzt × Mwc
Can be changed between. In addition, teleconverter lens C
If 2 is used, the magnification is Mzw × Mtc to Mzt × Mt
It can be changed between c. At this time, as shown in FIG. 5, the trimming magnification M is M = 24 / A = 36 / B. Therefore, by setting the relationship between the magnifications of the converter lenses C1 and C2 to M = Mtc / Mwc, it is possible to make the view angle of the viewfinder correspond to the change in the angle of view due to the trimming photographing using the converter lenses C1 and C2.

Returning to FIG. 1, reference numeral 11 denotes a holder for the wide converter lens C1. The holder 11 is guided by guide pins 12 and 13, and is configured to be vertically movable in the vertical direction. The holder 11 is constantly urged upward by a spring 14 in FIG. Also, 15
Is a holder for the teleconverter lens C2. The holder 15 is guided by guide pins 16 and 17, and is configured to be horizontally movable in the left-right direction. This holder 15
In FIG. 1, the spring 18 is always urged rightward.

A driving ring 21 also shown in FIG. 2 has a convex portion 2 on a side portion (right side portion in FIG. 1) of the driving ring 21.
1a and two gear portions 21b and 21c are formed on the outer periphery of the convex portion 21a. A concave portion 21d is formed between the gear portions 21b and 21c, and the outer periphery of the convex portion 21a other than the gear portions 21b and 21c is formed as side wall portions 21e and 21f.

G8 is a notch gear, which is arranged at a position where it can mesh with the gear portion 21b of the drive ring 21. G9 is a gear that rotates integrally with the gear G8, and is meshed with a rack gear 11a formed on the side of the holder 11. Similarly, the notch gear G10 is disposed at a position where it can mesh with the gear portion 21c of the drive ring 21, and the gear G11 that rotates integrally with this gear G10 is meshed with a rack gear portion 15a formed at the lower portion of the holder 15. I have.

The drive ring 21 is urged to rotate clockwise in FIG. 1 by a spring 22 hung on its convex portion 21a, but is formed on the side (left side in FIG. 1) of the drive ring 21. When the stepped portion 21g contacts the fixed boss 23, rotation in the clockwise direction beyond the rotation position shown in FIG. 1 is restricted.

Reference numeral 2 denotes a zoom ring also shown in FIG. 2, and a drive pin 24 and a notch 25
Is provided. Reference numeral 26 denotes a pawl lever, and 27 denotes a lever, which is supported by a common shaft 28 outside the drive ring 21. A spring 29 is stretched between the levers 26 and 27, but the mutual opening is regulated by the contact portion 26b at the base end of the claw lever 26 contacting the side of the lever 27. . Further, the pawl lever 26 is urged to rotate in the counterclockwise direction in FIG. 1 by the spring 30, but the pawl portion 26 a of the pawl lever 26 abuts on the side surface of the convex portion 21 h of the drive ring 21, so that the illustrated Held in position. The claw 27a of the lever 27
Extend to the front of the zoom ring 2.

Reference numeral 31 denotes a claw lever.
Is supported by a shaft 32 projecting from the convex portion 21a of the drive ring 21. The claw lever 31 is moved by a spring 33 as shown in FIG.
Is biased to rotate clockwise. The claw portion 31a of the claw lever 31 contacts the side surface of the zoom ring 2, and the contact portion 31b extends to the front surface of the zoom ring 2. 34
Denotes an arm member fixed to the camera body, the tip of which extends to the front surface of the zoom ring 2 and the fixing pin 3
4a is provided.

Next, in FIG. 4, reference numeral 40 denotes a control circuit incorporating a microcomputer for controlling the entire camera and other peripheral circuits, and includes a memory, a judgment circuit, an arithmetic circuit, a timer, and the like. Reference numeral 41 denotes a photographing zoom lens driving circuit, which controls driving of a zoom lens driving motor 42 that drives the zoom ring 2. Reference numeral 43 denotes a recording circuit which records information on trimming photography on a film (not shown in FIG. 4) via a recording device 44.

S1 and S2 are half-press and full-press switches interlocked with the release button of the camera body. Switch S1 is turned on by the first stroke of the release button, and switch S2 is turned on by the second stroke of the release button. I do.
S3 is a zoom up switch for moving the zoom lens to zoom up, and S4 is a zoom down switch for moving the zoom lens to zoom down. S5 is a mode changeover switch for switching and setting between a normal shooting mode for performing normal shooting and a trimming shooting mode for performing trimming shooting.

Next, the operation of the embodiment will be described. (1) Camera start → normal shooting mode The position shown in FIG. 1 is a state where the power of the camera is off,
The shooting zoom lens is at the reset position. When the power of the camera is turned on in this state, the zoom ring 2 is rotated in the direction A (clockwise) in the figure, and the drive pin 24 and the notch 25 are rotated to the positions indicated by 24 'and 25' in FIG. Be moved. With the rotation of the zoom ring 2, the drive pin 2
4 lifts the claw portion 27a of the lever 27 upward in FIG. 1 and moves over it to the position shown by 24 ', but the lever 27 is again brought to the position shown in FIG. Return.

In this embodiment, the drive pin 24 of the zoom ring 2 is
When the notch 25 is located at the position indicated by 24 'and 25' in FIG. 1, the focal length of the zoom optical system is at the wide end, and when the notch 25 is at the position indicated by 24 "and 25", The focal length is configured to be at the telephoto end. Therefore, in FIG. 1, when the zoom ring 2 is rotated clockwise, the focal length of the zoom optical system is changed to the long focal length side (tele side), and when the zoom ring 2 is rotated counterclockwise, the focal length is short. It is changed to the focus side (wide side). Accordingly, the zoom drive range is defined between the position where the drive pin 24 and the notch 25 are indicated by 24 ′ and 25 ′ and the position indicated by 24 ″ and 25 ″, and is a counterclockwise direction from the position indicated by 24 ′ and 25 ′. To the first drive range outside the zoom
When rotated clockwise from the positions indicated by 4 ″ and 25 ″, it has been moved to the second non-zoom drive range.

In the normal photographing mode, the drive ring 21 and the converter lenses C1 and C2 are in the states shown in FIGS. 1 and 3, the wide converter lens C1 is inserted in the optical path of the finder 4, and the teleconverter lens C2
Are retracted outside the optical path of the finder 4. That is,
The finder magnification for normal shooting is set. In addition,
At this time, the holder 15 of the teleconverter lens C2 is urged rightward by the spring 18, but the notch gear G
The rotation of the drive ring 21 is prevented by the end of the drive ring 21 being in contact with the side wall 21f of the drive ring 21, so that the state shown in FIG. The holder 11 is also urged upward by the spring 14, but the projection 11b of the holder 11 is in contact with the stopper 35, so that the state shown in the drawing is maintained.

When the zoom up (down) switch S3 (S4) is operated in this state, the control circuit 40 rotates the zoom lens drive motor 42 forward (reverse) through the photographing zoom lens drive circuit 41, thereby The zoom ring 2 is rotated in a predetermined direction to zoom up (zoom down) the photographing lens. At this time, the cam 3 is rotated via the gears G2 to G7 and the crown gear 3a with the rotation of the zoom ring 2, and the objective lenses L1, L2 are driven in the optical axis direction by the movement of the cam holes 3c, 3d. Zooming of the finder 4 is performed.

More specifically, in FIG.
Is located forward (closer to the subject) at the wide end,
As shown by arrow A in FIG. 3, the lens gradually moves backward and then forward as it goes to the long focal length side, and reaches almost the same position as the wide end at the tele end. On the other hand, the objective lens L2 is located at the rearmost position (closer to the film) at the wide end, moves gradually toward the long focal length side as shown by the arrow B in FIG. 3, and is located at the frontmost position at the telephoto end. From the above, the distance between the objective lenses L1 and L2 is the widest at the wide end and the narrowest at the telephoto end. As a result, the finder magnification is changed to a magnification corresponding to the focal length of the photographing zoom optical system. At this time, the drive ring 21 is stationary irrespective of the rotation of the zoom ring 2, and its gear portion 21b,
Since the gear 21c is not meshed with any of the gears G8 and G10, the insertion and retreat operations of the converter lenses C1 and C2 are not performed. Here, the position of the drive ring 21 shown in FIG. 1 corresponds to a first movable position in the claims.

(2) Switching to trimming photographing mode When the mode changeover switch S5 is operated to instruct the trimming photographing mode, the control circuit 40 controls the zoom lens driving motor 42 via the photographing zoom lens driving circuit 41 in a predetermined direction. The zoom ring 2 is rotated in the clockwise direction, that is, the tele side through the gear G1.

When the zoom ring 2 is further rotated from the telephoto end, the claw portion 31a of the claw lever 31 falls into the notch 25 of the zoom ring 2 as shown in FIG. In this state, when the control circuit 40 reverses the zoom lens drive motor 42 to rotate the zoom ring 2 in the counterclockwise direction, the claw lever 31
The zoom ring 2 and the drive ring 21 are connected to each other by the engagement of the notch 25 with the zoom ring 2 and rotate integrally.

When the drive ring 21 is rotated in the counterclockwise direction, the gear portion 21b meshes with the notch gear G8 and the gear G
When the gear G9 integrated with the gear 8 rotates clockwise to relatively push down the rack gear 11a meshing with the gear G9, the holder 11 is moved downward against the urging force of the spring 14 (see FIG. 3). Arrow c direction). In a state where the wide converter lens C1 is completely retracted from the optical path of the finder 4, as shown in FIG. 6, the end of the notch gear G8 comes into contact with the side wall 21e of the drive ring 21 and its rotation is restricted.
The illustrated state is maintained.

When the zoom ring 2 and the drive ring 21 are further rotated in the counterclockwise direction, the gear portion 21c of the drive ring 21 meshes with the notch gear G10, and the gear G11 integral with the gear G10 rotates clockwise. The holder 15 is moved to the right together with the urging force of the spring 18 by rotating the rack gear portion 15a meshing with the rack gear 15a to the right (in the direction of arrow d in FIG. 3). Then, the projection 15b of the holder 15 contacts the stopper 36, and the holder 1
5 is held in that position.

When the zoom ring 2 is further rotated in the counterclockwise direction, the fixing pin 34a of the arm member 34 and the contact portion 31b of the pawl lever 31 contact each other, and the pawl lever 31 moves in the counterclockwise direction. It rotates, and the engagement between the claw lever 31 and the notch 25 is released. Therefore, the zoom ring 2 and the drive ring 21
The drive ring 21 is rotated clockwise by the urging force of the spring 22, but the claw 26a of the claw lever 26 abuts the step 21g of the drive ring 21 and is held at that position. .

Thus, in the trimming photographing mode, the converter lenses C1 and C2 are in the states shown in FIGS. 6 and 7, the teleconverter lens C2 is inserted into the optical path of the finder 4, and the wide converter lens C1 is moved. The finder 4 is retracted outside the optical path of the finder 4, and the finder magnification for trimming photographing is set.

When the zoom up (down) switch S3 (S4) is operated in this state, zooming of the photographing optical system and zoom finder 4 is performed in the same manner as described above with the tele conversion lens C2 inserted. Therefore, the finder magnification is in accordance with the focal length of the photographing lens in the trimming photographing mode as described above. At this time, the drive ring 21 is stationary irrespective of the rotation of the zoom ring 2, and its gear portions 21b, 21c are not meshed with any of the gears G8, G10, so that the converter lenses C1, C2 are inserted and retracted. No action is taken. Here, the position of the drive ring 21 shown in FIG. 6 corresponds to a second movable position in the claims.

(3) Switching to the normal photographing mode When the normal photographing mode is commanded by operating the mode changeover switch S5 in the state shown in FIG. 6, the control circuit 40 drives the zoom lens via the photographing zoom lens driving circuit 41. The motor 42 is rotated in a predetermined direction, whereby the zoom ring 2 is rotated in the counterclockwise direction via the gear G1, that is, in the wide side.

When the zoom ring 2 is further rotated from the wide end, the drive pin 24 rotates the lever 27 clockwise, and the claw 26a of the claw lever 26 and the step 21 of the drive ring 21 are rotated.
g is released, and the drive ring 21 is rotated clockwise by the urging force of the spring 22.

When the drive ring 21 is rotated in the clockwise direction, the integral gear G11 is rotated in the counterclockwise direction by the engagement of the gear portion 21c of the drive ring 21 and the notch gear G10.
When the rack gear portion 15a meshing with this moves relatively to the left, the holder 15 moves to the left against the urging force of the spring 18 (in the direction of arrow E in FIG. 7). Further, the gear portion 21b of the drive ring 21 meshes with the notch gear G8 to rotate the integral gear G9 in the counterclockwise direction, and the rack gear portion 11a meshing with the gear portion G9 is relatively pushed up, so that the spring 14 is attached. The holder 11 is moved upward together with the force (in the direction of the arrow in FIG. 7). Then, the protrusion 11b of the holder 11 comes into contact with the stopper 35, and the holder 11 is held at that position.

Thus, the converter lens C1,
C2 returns to the state shown in FIGS. 1 and 3, the wide converter lens C1 is inserted into the optical path of the finder 4, the teleconverter lens C2 is retracted out of the optical path of the finder 4, and the finder magnification for normal photographing is set. You.

The above operation will be described with reference to FIG.
The horizontal axis of FIG. 8 indicates the focal length f of the photographing zoom lens, and the vertical axis indicates the composite focal length obtained by converting the angle of view obtained from the relationship between the focal length f of the zoom lens and the trimming magnification M into the focal length. Take. This combined focal length can be expressed in the form f × M.

The photographing zoom lens according to the present embodiment has a configuration in which zooming can be performed with a focal length in the range of 35 mm to 70 mm. Accordingly, in the normal photographing mode in which trimming is not performed, since the trimming magnification M is 1 (times), the composite focal length is in the range of 35 mm to 70 mm.
In this embodiment, since the trimming magnification M is set to 1.7 (times), the composite focal length in the trimming photographing mode is 59.5 mm to 119 mm. Since the zoom ratio in each photographing mode is twice the same, a range of 59.5 mm to 70 mm can be used in both modes. Therefore, the normal shooting mode is 35 mm to 70 mm, the trimming shooting mode is 70 to 119 mm, and the first non-normal shooting range is 59.5 in the trimming shooting mode.
It can also be set between 70 mm.

When the power of the camera is off, the photographing zoom lens is at the reset position e. When the power of the camera is turned on in this state, the zoom ring 2 is rotated to the position of the wide end a.

In the normal photographing mode, the photographing zoom lens can perform zooming between the wide end a and the tele end b. At this time, the wide converter lens C1 is inserted in the optical path of the finder 4 as described above.

In this state, when the trimming photographing mode is instructed, the zoom ring 2 is further rotated from the telephoto end b, and the zoom ring 2 and the drive ring 21 are connected at the point where the point f is reached.
Then, when the zoom ring 2 is rotated in the direction of the wide end c,
Wide converter lens C1 and tele converter lens C
2 is exchanged, and the trimming photographing mode is set.

In the trimming photographing mode, the photographing zoom lens can perform zooming between the wide end c and the telephoto end d by the trimming photographing. Further, when the normal photographing mode is instructed in this state, the zoom ring 2 is further rotated from the wide end c, and the tele converter lens C2 and the wide converter lens C1 are exchanged when the zoom ring 2 reaches g. At the same time, the normal shooting mode is set, and the combined focal length shifts from point g to point e. After this,
The photographing zoom lens can perform zooming between a wide end a and a tele end b in normal photographing.

In the correspondence between the embodiment and the claims, the zoom ring 2 is a zoom operating member, and the drive ring 21, gear portions 21b and 21c, gears G8 to G11 and rack gear portions 11a and 15a are second drive means. 60, the claw lever 3
1. Notch 25 is connecting means 61, spring 22 is urging means, pawl lever 26 and step 21g of drive ring 21
, The locking means 62, and the drive pin 24, the lever 27 and the spring 29 constitute the locking release means 63.

Therefore, according to the present embodiment, the finder 4
Converter lens C that changes the finder magnification
1 and C2 are provided so that they can be inserted and removed, and when switching between the normal shooting mode and the trimming shooting mode, these converter lenses C
Since C1 and C2 are alternately inserted and removed to correspond to the finder magnification for normal photographing or trimming photographing, the configuration of the finder is simplified as compared with a conventional configuration that supports only zooming of a zoom finder. It is possible,
The size of the camera can be reduced.

Further, since the converter lens is inserted and removed in conjunction with the drive ring that rotates integrally with the zoom ring,
This is advantageous in cost and space as compared with a case where a drive mechanism for inserting and removing the converter lens is independently provided.

The details of the camera capable of trimming photographing of the present invention are not limited to the above-described embodiment, and various modifications are possible. As one example, in one embodiment, two types of converter lenses, a wide converter lens C1 and a teleconverter lens C2, are prepared, and the converter lenses C1 and C2 are exchanged to support the normal shooting mode and the trimming shooting mode. However, a configuration may be adopted in which one type of converter lens is used and this converter lens is inserted in one of the normal shooting mode and the trimming shooting mode.

[0052]

As described above in detail, according to the present invention, a converter lens for changing the finder magnification is provided in the finder so as to be detachable, and these converter lenses are used when switching between the normal photographing mode and the trimming photographing mode. The finder can be inserted and removed to support the finder magnification for normal shooting or trimming shooting, so that the finder configuration can be simplified compared to the conventional configuration that only supports zooming with the zoom finder and zoom strobe. The size of the camera can be reduced. Moreover, since the converter lens is inserted and removed in conjunction with the drive ring that rotates integrally with the zoom ring, the cost and cost are reduced compared to a case where a drive mechanism for inserting and removing the converter lens is independently provided.
It is advantageous in terms of space.

[Brief description of the drawings]

FIG. 1 is a front view showing a configuration of a finder and a converter lens of an embodiment of a camera capable of performing trimming photographing according to the present invention.

FIG. 2 is a perspective view illustrating a configuration of a finder according to one embodiment.

FIG. 3 is a perspective view showing a configuration of a finder and a converter lens according to one embodiment.

FIG. 4 is a block diagram showing a circuit configuration of one embodiment.

FIG. 5 is a diagram showing an exposure area and a trimming area on a film.

FIG. 6 is a front view illustrating the operation of a finder and a converter lens.

FIG. 7 is a perspective view illustrating the operation of a finder and a converter lens.

FIG. 8 is a diagram illustrating a relationship between a focal length of a photographing zoom lens and a combined focal length.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lens barrel 2 Zoom ring 3 Cam 3c, 3d Cam hole 4 Zoom finder 5, 6 Holder 5a, 6a Cam follower 10 Guide rod 11, 15 Holder 14, 18 Spring 21 Drive ring 24 Drive pin 25 Notch 26, 27, 31 Lever 34 Arm member 35, 36 Stopper 40 Control circuit 41 Zoom lens drive circuit for photographing 42 Zoom lens drive motor 43 Recording circuit 44 Recording device 50 Film 51 Exposure area 52 Trimming area 60 Second drive means 61 Connecting means 62 Locking means 63 Lock release means C1 Wide converter lens C2 Teleconverter lens G1 to G11 Gears L1, L2 Objective lens S3 Zoom up switch S4 Zoom down switch S5 Mode switch

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G03B 13/12 G03B 17/24 G03B 17/28

Claims (3)

(57) [Claims] 1. A normal photographing mode for printing the entire photographing screen, and a trimming photographing mode for trimming a part of the photographing screen to obtain a pseudo telephoto effect, comprising: a photographing zoom lens; In a camera capable of trimming photographing, the first drive means for zooming the photographing zoom lens in accordance with the operation, and a zoom finder in which a field of view is changed by zooming in conjunction with zooming of the photographing zoom lens. A converter lens that is inserted into the optical path of the zoom finder in one of the normal shooting mode and the trimming shooting mode and changes the finder magnification separately from zooming of the zoom finder; and In conjunction with the operation, the converter lens is moved to the zoom type A second drive unit that is inserted into and removed from the optical path of the zoom operation unit; and a coupling unit that controls transmission of the operation of the zoom operation member to the second drive unit. The zoom operation member includes the first drive unit. A zoom drive range to be driven, and movable outside the zoom drive range, wherein the connecting means is provided when the zoom operation member is returned to the zoom drive range after being moved out of the zoom drive range. The operation of the zoom operating member is transmitted to the second driving unit. The second driving unit is configured to move the zoom operating member in a direction from the outside of the zoom driving range to the zoom driving range. A camera capable of trimming photographing, in which the converter lens is inserted and removed. 2. The camera according to claim 1, wherein the second driving unit is configured to be movable between a first movable position and a second movable position, and the second operating unit is configured to move the zoom operating member. A camera capable of performing trimming photography, wherein the camera is configured to be inserted into and removed from the converter lens by being moved from one movable position to the other movable position in conjunction with an operation. 3. The camera according to claim 2, wherein said second drive means is biased to said first movable position, and said second drive means is said second movable position. Locking means for locking to the second driving means when it is moved to the position and suppressing its movement; and locking release means for releasing locking to the second driving means by the locking means. Outside the zoom drive range, a first outside zoom drive range corresponding to the wide side from the wide end of one of the normal shooting mode and the trimming shooting mode, and a tele side from the tele end of the other mode. A corresponding second outside-zoom drive range is provided, and the connecting unit is configured to perform the second drive when the zoom operation member is moved to the second outside-zoom drive range and then returned to the inside of the zoom drive range again. Means for the first Moving from position to said second movable position, the locking release means, said second of said locking means and the zoom operation member is moved to said first zoom out of the driving range
A camera capable of performing trimming photographing, wherein the camera is released from being locked to a driving means.