JPH0377931A - Camera capable of switching film size - Google Patents

Abstract

PURPOSE:To take consecutive photographs of the number of windows X the number of frames by providing a shielding plate changing the aperture dimension of an aperture member, and dividing each frame of a film into plural windows. CONSTITUTION:The camera is provided with the aperture member 1 determining a maximum region capable of being photographed on the film, and the light shielding plate 20 changing the aperture dimension of the aperture member 1 in a direction that the film is fed. And the camera is provided with a switching member 30 switching the light shielding plate 20 between a first position where the light shielding plate 20 is retreated from the aperture member 1 and a second position where the aperture dimension if reduced to almost (1/N), means 31 and 32 detecting the position of the light shielding plate 20, a film take-up means and a control means. Thus, one frame of a film is divided into N-windows and one shot photographing is carried out for each window, so that when photographing of M-frames is carried out, M X N-shots can be recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a camera that is capable of taking continuous photographs in one frame of film, and more specifically, to a camera capable of taking continuous photographs in one frame of film, and more specifically, to -Or relates to a camera capable of photographing multiple shots.

(Prior art) Conventionally, in single-lens reflex cameras, etc., while the release button is pressed, the exposure operation and film winding operation are switched back and forth to take continuous pictures, so-called continuous shooting. It has been known.

On the other hand, the area that can be exposed on film is between full size and half size! A variable screen size camera in which the opening size of an aperture member is changed in two stages is known as a camera that can be used as an If source.

(Problem to be Solved by the Invention) However, in a camera capable of continuous shooting as described above, if rapid shooting is performed at, for example, 3 frames per second, only 12 seconds of shooting will be performed on a 36-shot film. This is inconvenient when you want to take quick shots over a longer period of time or when you want to save on film. In addition, when viewing consecutively shot photos organized in an album, etc., with the above-mentioned device, it is necessary to attach a print of the number of consecutively shot photos to the album. It became unpleasant to wear, and even on the ornamental type Jl, there were problems.

Furthermore, in the case of a variable screen size camera like the one described in ■-, for example, when switching the shooting size within one film, full size and /%-full size will coexist, and the photofinishing laboratory will have to deal with this. He could not do it and was shunned.

Furthermore, even if the camera was changed to half-size for quick shooting in order to save film or extend the shooting time, the problem of viewing prints in albums was not resolved.

The present invention has been made in view of these problems. Firstly, continuous shooting for a longer period of time is possible, secondly, film used during continuous shooting can be saved, and thirdly, To obtain a continuous photographing device that is easy to view when attached to an album or the like for viewing.

(Means for Solving the Problems) In order to achieve the above object, in the present invention, each frame of the film is divided into a plurality of windows during continuous photography, and one shot is taken for each window. I made it possible.

Specifically, the camera capable of changing the film size of the present invention includes an aperture member (1) that determines the maximum photographable area on the film, and an LIf function that moves forward and backward into the opening of the aperture member. A light-shielding plate (20) that changes the aperture/1'' dimension of the aperture member with respect to the feeding direction, a first position where the light-shielding plate is retracted from the aperture member, and an opening size in the feeding direction wIS (1/ N
) and a second position to reduce i
If the switching member (30) is capable of switching, and the light shielding plate is in the first position
detection means (31) for detecting whether the
, 32) G, 7. When the detection means detects that the light-shielding plate is in the first position, the film winding means is provided with a first winding film for each photographing. The film is wound according to the amount of winding, and the light shielding plate
When it is detected that the film is in the position , the film winding means is caused to wind the second film (N-1) times for each shooting, and finally the third film winding amount is determined. and a control stage (50) for causing the winding to take place. In addition, N of 2 or more
indicates an integer, and the second winding arrival is equal to the opening in the feed direction [1. is the modulus (1/N)! 11:. Also, the third
The amount of winding is smaller than that of 1, but the amount of winding of J
There are more spears than it, but more than 11:, to be exact, the following relationship is satisfied.

(Third winding ia) + (Second winding ■) X (N-1
) (Volume 1 - 118) (Operation) According to the camera of the present invention, one frame on the film is divided into N windows, and one shot is taken in each window, that is, N shots are taken in each window. When shooting the M part in this way, the film is used for the M part, but the MX
It becomes possible to record N shots.

(Example) Embodiment 11 of unreleased cells will be described with reference to FIGS. 1 to 3.

FIG. 1 is a partial perspective view showing a first embodiment of the present invention.

In FIG. 1, an aperture member 1, which is a part of the camera body, has 7
A percher 1a is provided. The size of the aperture corresponds to the maximum area that can be photographed, and in the case of a full-size 35-layer film, it is 24 layers long x 38 layers wide.

A pawl 2a at 46 provided on the outer periphery of the sprocket 2 for detecting film movement engages with a perforation of the film and rotates as the film moves.

The rotation is accelerated by gears 3 to 6 and transmitted to the slit circle Im7. The amount of rotation of the slit circle W17 is detected by the photo interrupter 8. In this example, one frame of film (38 layers + 2 blank layers = 3
8m ■) Photo interrupter 8 to 1 when hoisting
The speed increasing ratios of the gears 3 to 6 are set so that 14 pulses are output.

There are 10 spools for winding the film.

The output of the film winding motor 11 disposed inside the spool lO is transmitted to the gear 12. Reduction mechanism 13. gear +4
A gear I integrally provided at the bottom of the spool lO via
transmitted to Oa. Due to this rotation of the spool,
Film ablation is performed.

The sequence motor 15 is used to perform various operations related to the release, such as raising and lowering the mirror, driving the aperture, and charging the shutter.

A focal plane shutter unit 1B is provided in front of the aperture member 1. A shutter curtain included in this unit 1B runs inside the aperture 18a to expose the film. An aperture light shielding plate 20 is provided between the aperture member 1 and the unit 1B, and one end 20a of the aperture light shielding plate 20 is wound around a shaft 22. The shaft 22 is provided with the ability to rotate in the direction in which the light shielding plate 20 is wound up by a spring (not shown). The light shielding plate pulled out from the shaft 22 is
It is bent by 0" and enters the aperture 1a.

The switching member 30 is operable depending on the imaging base.

Illustrated rNORMAL”, rl/2J, rl/
It is possible to slide between each index of "3" with +7 functions. These indicators are full size and 2 windows each.

Supports shooting in 3 windows. The position of the switching member 30 is detected by switches 31, 32. That is, in the rNORNALJ position, both switches 31 and 32 are O.
At the FF, rl/2J position, 31 is ON and 32 is OFF.

At the rV3J position, both switches 31 and 32 are turned on. Further, the sliding movement of the switching member 30 is also connected to the light shielding plate 20.

FIGS. 2(^) to 2(C) are diagrams showing the operation of the light shielding plate 20. When the switching member 30 is in the rNORMALJ position, the end 20b of the light shielding plate is outside the aperture 1a, and the aperture is not affected by the light shielding plate.

When the switching member 30 is at the rl/2J position, the end portion 20b of the light shielding plate is 5!1 (the state shown in FIG. 1) to the extent that the light shielding plate covers 1/2 of the aperture 1a.Similarly, the wJ switching member When 30 is at the rl/3J position, the end 20 of the light shielding plate
b is a position where the light shielding plate covers 2/3 of the aperture 1a.

FIG. 3 is a block diagram showing the circuit configuration of the first embodiment. In FIG. 3, information such as subject brightness, film sensitivity, shutter speed, aperture value, etc. is sent from a known exposure control circuit 51 to a microcomputer (hereinafter referred to as microcomputer) 50 that controls various operations of the camera. .

The drive circuit 52 for driving various actuators includes the film a lifting motor 11, the sequence motor 15, described in t'f4. A shutter front curtain control magnet 53, a shutter rear curtain control magnet 54, and an aperture control magnet 55 are connected. The shutter front curtain control magnet 53 and the shutter rear curtain control magnet 54 control the movement of the front curtain and rear curtain of the shutter, respectively. The aperture control magnet 55 has the function of controlling ONL and the aperture to a desired size when the aperture is being driven by the Leeds sequence motor 15 described above. The timing for operating each of the magnets 53 to 55 is determined by the microcomputer 50 based on data sent from the exposure control circuit 51 so as to obtain proper exposure.

The microcomputer 50 also receives signals from the photointerrupter 8 mentioned above. Sweet, Chi 31°32 is +ii
A switch 56 interlocked with the switching member 30 described in j above is a known release switch.

Next, the operation of the first embodiment will be explained.

First, during normal shooting (switching member 30 is set to rNORM^L)
” digit “11)” will be explained. Release switch 5
When B is turned on, the sequence motor I5 raises the mirror and drives the aperture, and the aperture control magnet 55 controls the aperture. Thereafter, the shutter front curtain control magnet 53. A shutter trailing curtain control magnet 54 causes the shutter to run so as to achieve a desired exposure time. Release sequence motor again! 5, the mirror is lowered, the aperture is reset, and the shutter is charged. The operation up to this point is called a release sequence in this rll m ;9.

During normal operation, the film winding motor 11 rotates following the release sequence.

Wind the film one frame. To explain this further,
Upon completion of the release sequence, the microcomputer 50 drives the film winding driver 11 via the drive circuit 52. The spool 10 is driven by the rotation of the film aperture motor 11. When the film begins to be scratched, sprocket 2 moves as the film moves.
The slit disk 7 rotates through the film, and during the movement of the film, pulses are generated from the photointerrupter 8 and fed back to the microcomputer 50. As mentioned above, in this embodiment, the number of pulses when raising the film by one frame, that is, the first winding amount (38 mm) a, is 114, so the microcomputer 50 uses 114 pulses when the feedback pulse reaches 114 M. Film a advance motor 1! so that the film advance operation is completed. control. This operation is referred to as an a raising sequence in this specification.

One normal photographing operation is completed by each of the above-mentioned release sequence and m5-b release sequence. For reference, the processing operation of the microcomputer 50 in this case is shown in the flowchart of FIG. 4. In FIG. This indicates that The condition of the film shot in this way is as follows:
The result will be as shown in Figure (A).

Next, when the switching member 30 is at the position l of rl/2J (number of windows, N-2), IJl! The operation in shadow will be explained. At this time, the light shielding plate 20 is in the state shown in FIG. t52 (CB), and only the rolled-up half of the aperture can be exposed. Switch 31 is ON, switch 32
is OFF, the microcomputer 50 recognizes that the switching member 30 is at the position rl/2J, and executes the operation shown in the flowchart of FIG. 5 at the time of release.

In FIG. 5, after executing the release sequence in step #202, in step #203, the film a! ! - Do the beard, this is the movement of the film! ,) converted to lkm
This corresponds to 1/2 degree T of the full size opening dimension in the film feeding direction. That is, in N-2, the second volume-L hem stitch is 18 mm. Further step #
Execute the release sequence at 204 and step #2
In 05, we will wind the film for 60 feedback pulses, which will be used to move the film! ! ! ! !
The calculation is 20ts, and the second winding amount (18mm
) plus a blank area 2■ between the next photographic screen. That is, in N-2, the third winding amount is 20
It becomes mm. The film shot in this way is f
As shown in Figure (B), two consecutive shots of the snapshot screen are imprinted within a normal frame of 2-axis tilt x 3Bm layer. l Komabechi 17 frames (in this case 2
If the release button is continued to be pressed even after the shooting of the window) is completed, quick shooting is continued in the same manner as shown in the line returning from step #20B to step #202 in FIG.

Next, the operation during photographing when the cutting member 30 is at the digit ``rl/3'' (number of windows, N-3) will be described. At this time, the light-shielding plate 20 is in the state shown in FIG. 2(C), with only one third of the winding-up side of the aperture serving as an exposure opening. Since the switches 31 and 32 are both turned on, the microcomputer 50 switches the switching member 30 to rl.
/3" position, and when releasing the camera, the 6th
Execute the operations shown in the flowchart in the figure.

In FIG. 6, after executing the release sequence in step #302, film winding is performed in step #303 so that the number of feedback pulses becomes 38;
This is 12 seconds (N-
3, corresponds to exactly 1/3 of the full-size aperture dimension with respect to the film advance direction. Further, the same operations as in steps #302 and #303 are repeated in steps #304 and #305, and the release sequence [1] is executed three times in step #308. In step #307, film winding is performed for 42 feedback pulses, which corresponds to 14 layers (the third winding spear in N-3) in terms of film movement, and the second winding 1 ( 12 layers) plus 2 blank layers between the next screen and the next screen. In the film photographed in this manner, a continuous three-shot window is imprinted as a snapshot in a normal frame of 2 axes x 36 frames, as shown in FIG. 7(C). If you continue to press the release button even after shooting l frames (in this case, 3 windows),
Step #308 to Step #302 in FIG.
The same snapshot is repeated by the line that returns to .

FIG. 8 shows the finder in the first embodiment. The finder screen 80 is provided with a frame 81 indicating a known distance measurement range and a frame 62 indicating a photometry range. Furthermore, in this example, the index position 2 of rl/2J! (N-2) or rl/3J index position P1 (N-3
) index 63.64 that serves as a guide for composition when performing continuous shooting
is provided. In other words, the composition should be determined so that the subject falls within range A in Figure 8 when taking a quick shot of 2 windows, and within range B when taking a quick shot of 3 windows.The index 83.64 is For example, an electro-optical device such as a liquid crystal display may be used to display the image only when necessary, or a light-shielding plate or a liquid crystal display may be used to display the area that is not photographed (
For example, in the case of 2-window snapshots, it may be configured to cover the left side of the index 63 in Figure 8.Furthermore, if this covered part is made semi-transparent, the part that can be seen in the viewfinder will become smaller and the composition will be better. This can prevent it from becoming difficult to decide.

FIGS. 9 to 12 show a second embodiment of the present invention. The 4a structure of the camera of the second embodiment is shown in Figures 1 and 2.
It is similar to that shown in the figure.

In addition, the normal photographing operation (IN!# in full size) is the same as that shown in FIG. 4. In this embodiment, the cutting member 30 is rl/2J,
The position of the light shielding plate when it is at the position rl/3J is the 9th position.
As shown in Figures (A) and (B), the opening dimensions of the respective openings in the film feeding direction are smaller than the opening dimensions 1/2 and 1/3 of the aperture 1a.

In the flowchart of FIG. 10, the cutting member 30 is rl/2.
This figure shows the operation when it is at the index position J. t
In the ISLO diagram, after executing the release sequence in step #202A, in step #203A, film a is raised (second winding hardness in step 2) so that the number of feedback pulses becomes 55. 18. : 1+uw, the opening dimension in the film feeding direction shown in FIG. Further, in step #204A, a release sequence is executed, and in step #205, the film is wound up by 59 feedback pulses (third winding 1j at N-2), which is equivalent to 19. 7 mm, which corresponds to 17.7 mm of the aperture shown in FIG. 9(A) plus a blank space of 2 . The film photographed in this manner is shown in FIG. 12(A).

Two consecutive shots are printed in a normal frame of 24 x 361 frames with a blank space of 0.8 WS width.

Flowchart I in FIG. 11 shows that the cutting member 30 is rl/
This figure shows the operation when it is at the index position of 3J.

In FIG. 11, after executing the release sequence in step #302A, in step 9303A, the film is wound so that the number of feedback pulses becomes 37 (
Perform the second winding step at N-3, which is equivalent to 12.3tg+ in terms of film movement, which is m
9 Opening method in the film feeding direction shown in FIG. 9 (B) 11.
The size is 3■ Cod and 1■ Proverb. Further, the same operation is repeated in steps #304A and #305A, the third release sequence is executed in step #306^, and the film winding for 40 feedback pulses is performed in step #307A. The third winding [-geshu] is carried out, which is equivalent to 13.3 + sm when converted to the amount of film movement, and the distance between the opening size of 11.3 sm shown in Figure 9 (B) and the next screen. This corresponds to adding 2 blank spaces. The film photographed in this way is shown in Fig. 12 (B), in a normal frame of 24*m x 38rx.
The window of the shot is shot in succession, leaving a blank space the width of each shot. Note that the parts not described in the description of this embodiment are the same as those of the first embodiment.

As mentioned above, in this embodiment, a blank space is provided between the windows, so that even if a small error occurs in the film winding 1F position during film winding, for example, , the windows will not overlap and become difficult to see, and the blank space between the windows is smaller than the normal 2-layer spacing between frames of 24mm x 3Bms+, so it can be printed. You will never lose track of frame boundaries.

Also, contrary to the second embodiment, it is also possible to intentionally hide windows.

In this case, if we take "1/2" as an example, the Nt method of the aperture of the light shielding plate is 18.31-, and the flow f in Fig. 10 is shown in Figure 10.
Set hl-rjll to 53 pulses and 61 pulses, respectively. In this way, the two windows will be photographed 0.8□ east. Similarly, in the case of rl/3J, method 1 of the light shielding plate opening is 12. #303A, #305A, #307AI7 in the flowchart in Figure H.
) ID tension amount is 35 pulses, 35 pulses, and 4, respectively.
When 4 pulses are used, images are taken with an eastward angle of 0.9□ between each window. If the windows are always overlapped in this way, there will be no blank space between the windows, making it easier to identify each piece. Subject 1 again? The photographer may be able to switch between providing a blank space between windows or folding the window depending on the scene.

Note that by using the light shielding plate 20 used in the present invention, 'A
When replacing the film with the lid open, the light-shielding plate may be configured to cover the entire surface of the seven vertiers 1a to protect the shutter curtain during film replacement.

In the embodiment described above, the control of the microcomputer can be turned off by detecting the position of the light shielding plate 20 with the switches 31 and 32, but the switch that directly detects the position of the light shielding plate 20 is Even if you die, the same skill is IF Noh.

(Effects of the Invention) As described above, in the present invention, each frame of the film is divided into multiple windows during continuous photography, and one shot of IM shadowing can be performed in each window. 1. For example, if three windows are provided for each frame, rapid shooting can be performed three times as long as normal continuous shooting. Also, in continuous shooting for the same time, the amount of film used is 1
The size of the print is only 1/3, and the size of the print is also 1/3, making it easier to see when viewing. Furthermore, it is now possible to record multiple shots in one frame, so for example, when photographing a golf swing, you can record three shots during a take-back in one frame, three shots before and after impact in the next frame, and then a follow-through shot. It is also possible to shoot three shots into the last frame, making it possible to create visual expressions never seen before.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the first embodiment of the present invention, Fig. i2 is a diagram showing the positional relationship between the cutting member and the light shielding plate in the first embodiment, and Fig. 3 shows the configuration of the first embodiment. Block Diagram FIGS. 4 to 6 are flowcharts showing the operation of the first embodiment. Fig. 7 is a diagram showing the state of film photographed by Kasura using the first embodiment, Fig. 8 is a diagram showing the finder display in the first embodiment, and Fig. 9 is a diagram showing the switching member in the second embodiment. A diagram showing the positional relationship of light shielding plates. 1O to 11 are flowcharts showing the operation of the second embodiment, and FIG. 12 is a diagram showing the state of the film photographed by the camera using the second embodiment. Explanation of the symbols of the main parts> l...Fist/Camera body! a1111...Red/Aperture 2...War...lI-Sprocket 8eφ---Photointerrupter-10-...
・・Spool 11・・Fist・ψ・・・Film a lifting motor 15・・・・・・Sequence motor 20・Φ・・・・Light shielding plate 30・・・・・・・・Switching member 31.32−・***Detection switch 50111111 521 ・5B--・ 60・ ・- 83,840 ・Microcomputer drive circuit ・Release switch finder screen ・Indicator 3Ql Fig. 8

Claims (1)

[Scope of Claims] 1. An aperture member that determines the maximum photographable area on the film; and an aperture member that can move forward and backward into the opening of the aperture member, and that changes the opening size of the aperture member with respect to the feeding direction in which the film is fed. the light shielding plate is switchable between a first position where the light shielding plate is retracted from the aperture member and a second position where the aperture size in the feeding direction is reduced to approximately (1/N); a switching member; a detection means for detecting whether the light shielding plate is in the first position or the second position; a film winding means; and a detection means for detecting whether the light shielding plate is in the first position. When the film winding means is detected, the first film winding means is
When it is detected that the light-shielding plate is in the second position, the film winding means is caused to wind the film by a winding amount of approximately (1/N) of the opening size in the feeding direction for each photograph.
winding is performed (N-1) times with a second winding amount equal to , and then one winding is performed with a third winding amount that is less than the first winding amount but greater than the second winding amount. A camera capable of switching film sizes, comprising: a control means; 2. The film size switchable camera according to claim 1, further comprising a changing means for changing the value of N.