JP2002214678A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make obtainable a print whose image plane size is about half with a simple constitution. SOLUTION: This camera using film whose image plane position is previously regulated with respect to a specified perforation is equipped with an image frame switching means capable of switching an image frame to a half image frame whose area is about 1/2 by shielding both ends of the image frame from light, a 1st photosensor to detect that the film is fed to a position where the image plane is formed by the image frame when the image frame is not switched to the half image frame, a 2nd photosensor to detect that the film is fed to a position where a 1st half image plane whose area is about 1/2 is formed on the downstream side in the feeding direction of the image plane by the half image frame when the image frame is switched to the half image frame, and a 3rd photosensor to detect that the film is fed to a position where a 2nd half image plane whose area is about 1/2 is formed on the upstream side in the feeding direction of the image plane by the half image frame after the image frame is switched to the half image frame and the 1st half image plane has been formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera which uses a film in which the position of a screen is predetermined for a predetermined perforation and which can be switched to an image frame forming a screen size of about half.

[0002]

2. Description of the Related Art In a normal camera using a 135 film, a normal screen size is 36 mm × 24 mm, but a half length is set to about 1/2 of the horizontal length of 17 mm and a screen size of 17 mm × 24 mm. There were times when many size cameras were commercially available. In addition, 36mm
Some cameras were switchable between a full size of 24 mm and a half size of 17 mm 24 mm.

[0003]

An image is taken by a camera which can be switched between a full size and a half size as described above, and 1
If both screen sizes are mixed in a book film, the screens may not be arranged at equal intervals. For this reason, when performing print processing in the lab, the enlargement magnification differs depending on the screen size, and the long side direction differs,
Further, since the screens are not equally spaced, the operation is very troublesome.

At present, a half-size camera is not manufactured, and a full-size camera using 135 film and a camera using IX240 film are mainly used. When requesting a print, a normal user specifies a print of a service size. The size of the print is generally E size of 82 mm × 117 mm or L size of 89 mm × 127 mm.

[0005] Such prints are of a suitable size for pasting on an album. However, some young people keep their friends' photos in their regular pocketbooks and are seeking smaller prints. However, it is very difficult to develop or install a processor that produces small prints for some of these customers.

Even if this is realized, for example, the price of a print that is half the size of the E size cannot be half the price of the current print of the E size. It is expected that the price will be close to the price of the print.

The present invention was invented as a result of studying that it was possible to easily obtain a small print as described above. A half screen was photographed twice and the screen size was reduced to about half. It is an object of the present invention to propose a camera which can easily obtain the print of the present invention, and a camera which can surely cope with the case where the photographing of the half screen is performed only once.

[0008]

The above object is achieved by any of the following means.

In a camera using a film in which the position of the screen is predetermined for a predetermined perforation, both ends of the film forming the screen in the feeding direction of the film are shielded by an area of about 1/4 each. An image frame switching means capable of switching to a half image frame having an area of about 1/2 of the image frame; a film feeding means for feeding the film; A first photosensor for detecting that the film has been fed to a position where the screen is formed by the image frame when the frame is not switched to the frame; A second photosensor for detecting that the film has been fed to a position where the half screen frame forms a first half screen having an area of about 下流 the downstream side in the feeding direction of the screen; and the image frame. Switching means After switching to the half-frame, the first half-screen is formed, and then the half-frame is formed at a position where a second half-screen having an area of about half the upstream side in the feeding direction of the screen is formed by the half-frame. A third photosensor for detecting that the film has been fed.

In a camera using a film in which the position of a screen is predetermined for a predetermined perforation, both ends in the feeding direction of the film in an image frame forming the screen are shielded by an area of about 1/4 each. An image frame switching means capable of switching to a half image frame having an area of about 1/2 of the image frame; a film feeding means for feeding the film; When the film is fed and the film is fed, the half picture frame is slightly downstream in the feeding direction from the position where the first half screen having an area of about 下流 of the area downstream of the screen in the feeding direction is formed. When the film is stopped, or when the film is fed after the first half screen is formed, the second half of the area of about half the upstream side in the feeding direction of the screen by the half picture frame is used. Position where a half screen is formed At least one of the film feed control of stopping the film slightly upstream in the feed direction, and performing a double exposure on a boundary zone between the first half screen and the second half screen. A camera characterized by the following.

In a camera using a film in which the position of a screen is predetermined for a predetermined perforation, both ends in the feed direction of the film in an image frame forming the screen are shielded by an area of about 1/4 each. An image frame switching means capable of switching to a half image frame having an area of about 1/2 of the image frame; a film feeding means for feeding the film; When the film is fed and the film is fed, the half picture frame is slightly upstream from the position where the first half screen having an area of about 面積 of the area downstream of the screen in the feeding direction is formed. When the film is stopped, or when the film is fed after the first half screen is formed, the second half of the area of about half the upstream side in the feeding direction of the screen by the half picture frame is used. Position where a half screen is formed Performing at least one of the film control operations of stopping the film at a position slightly downstream in the feeding direction, and setting the boundary between the first half screen and the second half screen as an unexposed boundary band. Features camera.

In a camera using a film in which the position of a screen is predetermined for a predetermined perforation, a first half having an area of about 1/2 of a downstream side in a feeding direction from a substantially center of the screen by two exposures. A camera characterized in that a screen and a second half screen having an area of about 1/2 of the upstream side in the feeding direction can be formed, and the first half screen is formed first.

In a camera using a film in which the position of the screen is predetermined for a predetermined perforation, a normal photographing mode in which the screen is exposed once,
A half screen photographing mode in which a half screen having an area of about one half and a half screen having an area of about another half are formed from substantially the center of the screen in the film feeding direction by multiple exposures. A control unit configured to be switchable so as to switch to the half-screen shooting mode and to perform a rewind operation even if a rewind operation is performed when only the one half screen is exposed. A camera characterized in that:

In a camera using a film in which the position of the screen is predetermined for a predetermined perforation, a normal photographing mode in which the screen is exposed once,
A half screen photographing mode in which a half screen having an area of about one half and a half screen having an area of about another half are formed from substantially the center of the screen in the film feeding direction by multiple exposures. When the rewinding operation is performed when switching to the half-screen shooting mode and only the one half-screen is formed, the illuminating unit arranged near the film is used to switch the other half-screen shooting mode. A camera comprising control means for controlling a rewind operation after exposing a half screen position.

In a camera using a film in which the position of a screen is predetermined for a predetermined perforation, a normal shooting mode in which the screen is exposed once,
A half screen photographing mode in which a half screen having an area of about one half and a half screen having an area of about another half are formed from substantially the center of the screen in the film feeding direction by multiple exposures. When the rewind operation is performed when only the one half screen is formed by switching to the half screen shooting mode, the shutter is automatically opened and closed to switch the other half screen. A camera, comprising: a control unit configured to perform a rewind operation after being formed.

In a camera using a film in which the position of the screen is predetermined for a predetermined perforation, a normal photographing mode in which the screen is exposed once,
A half screen photographing mode in which a half screen having an area of about one half and a half screen having an area of about another half are formed from substantially the center of the screen in the film feeding direction by multiple exposures. It is configured to be switchable, so that the mode is switched to the half screen shooting mode, and when only the one half screen is formed, even if the switching operation to the normal shooting mode is performed, the normal shooting mode is not set. A camera comprising control means for controlling.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a camera according to the present invention will be described in detail with reference to the drawings.

First, an example of an exterior member of a camera according to the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of the camera viewed from the front, and FIG. 2 is a perspective view of the camera viewed from the rear.

In FIG. 1, a lens barrel 1 holding a photographing lens L is disposed at the center of the front of the camera, and an objective lens window 2 of a finder is disposed above the lens barrel. At the upper right of the lens barrel 1, a photometric window 3 for measuring the subject light is arranged. On the left and right of the objective lens window 2, a light emitting window 4 for emitting infrared light for distance measurement, and infrared light reflected by the subject are provided. A light receiving window 5 for receiving light is disposed. On the right side of the light receiving window 5, a strobe light emitting window 6 for emitting strobe light is arranged.

A release button 7 is provided on the upper surface of the camera.
Is arranged. In FIG. 2, an eyepiece window 11 of a finder is arranged at the center of the back of the camera, and a print type switching lever 12 is arranged above the eyepiece window.
This camera uses an IX240 film, and can switch to the C, H, and P print types, which are normal shooting modes, by sliding the print type switching lever 12 right and left. As is well known, a field frame (not shown) inside the viewfinder is switched in accordance with the switching of the print type, and information corresponding to the selected print type is magnetically recorded on the film at the time of photographing. This camera has a half-screen shooting mode in which one screen is divided into right and left parts so that half screens can be separately shot as described later. To set the half-screen shooting mode, the print type switching lever 12 may be slid to the far right to match the index to W.

A display section 13 made of a liquid crystal plate is arranged below the eyepiece window 11, and displays the number of frames to be photographed, the photographing mode, the date to be imprinted on the film, and the like.

A main switch lever 14 for operating a main switch, which will be described later, is disposed below the display unit 13. On the left side of the display unit 13, a shooting mode button 15 for switching a shooting mode, and a date for printing on film are changed. A date button 16 for rewinding the film and a midway rewind button 17 for rewinding the film before shooting all the frames are arranged.

Each time the photographing mode button 15 is pressed, the photographing mode switches to a strobe on mode, a strobe off mode, a portrait night view mode, a red-eye reduction mode, an exposure correction mode, etc. in addition to the auto mode.

Further, since the photographing lens L is a zoom lens, a zoom button 18 for performing zooming on the wide-angle side and the telephoto side is disposed on the right side of the eyepiece window 11, and
Below the zoom button 18, a cartridge lid opening lever 20 for opening the cartridge lid 19 for loading a film is arranged.

It should be noted that the camera according to the present invention is not limited to the above-described camera, and the print type switching lever may be of a type that is not a sliding type but is rotated.

Next, the half screen photographing mode will be described with reference to FIGS. FIG. 3 is a cross-sectional view of the image frame switching mechanism, and FIG. 4 is an explanatory diagram of film feeding.

First, the image frame switching mechanism will be described with reference to FIG. The subject light exposes the film F by the taking lens L when the shutter 31 is opened. When the print type switching lever 12 is set to any of C, H, and P, the state is as shown in FIG. 3A, and a 27.4 mm × 15.6 mm screen is formed on the film F by the image frame 32. . The film is fed left and right in FIG.

Next, the print type switching lever 12 is set to W
When the light shielding plate motor is driven by the CPU described later, the light shielding plate 33 is rotated clockwise, and the light shielding plate 3 is rotated.
4 is rotated counterclockwise. As a result, both ends of the image frame 32 in the film feeding direction are shielded from light with an area of about ４, and a state shown in FIG. 3B is obtained. The area becomes 1/2. Hereinafter, this image frame is referred to as a half image frame. Thereby, the film F
The screen formed in this manner has an area of about １ ／, but this screen is hereinafter referred to as a half screen.

The image frame switching mechanism is not limited to the above-described mechanism, but may be of a type in which the light shielding plate slides left and right or up and down.

Next, film feeding will be described with reference to FIG. The film of the present embodiment is an IX240 film, and the position of the screen Fa formed by exposure is defined in advance by two perforations P1 and P2 located at both ends of the screen Fa. Further, a first photosensor PA, a second photosensor PB, and a third photosensor PC each including a photoreflector for detecting the perforations P1 and P2 are arranged near the image frame 32. In FIG. 4, it is assumed that the film F is fed from right to left at the time of winding. That is, the cartridge for storing the film F is disposed on the right side, and the reel for winding the film F is disposed on the left side.

FIG. 4A shows a print type switching lever 1.
FIG. 3 is a diagram of the film when 2 is set to any of C, H, and P, and a screen Fa is formed on the film F by photographing. Then, the CPU starts a film feed motor (not shown) in the forward direction to wind up the film for one screen, but the first photosensor PA has passed the two perforations P2 and P1 located at the upper right. Is detected,
This causes the CPU to stop the film feed motor.
The reason why the perforation P1 is not stopped immediately above the first photosensor PA is that there is a slight time lag until the film feeding motor completely stops.

Next, the print type switching lever 12 is set to W
Suppose you set Then, as shown in FIG.
At the same time, the film feed motor is rotated in the reverse direction to start rewinding the film. That is, FIG.
The film F is fed in the opposite direction. At this time, the second photo sensor PB detects that the perforations P1 and P2 located at the upper left have passed,
U stops the film feed motor, rotates the film feed motor forward again, and winds up the film F in the same direction as in FIG. Then, the second photosensor PB detects that the same perforations P2 and P1 have passed, and thereby the CPU stops the film feeding motor.
The state shown in FIG. Here, when photographing is performed, the left half of the screen Fa is exposed by the half image frame formed by the light shielding plates 33 and 34, and the first half image Fb is formed.

When the first half screen Fb is formed, the CPU starts the film feed motor in the normal rotation direction. At this time, the third photosensor PC is driven by the perforation P2 located at the upper left of FIG. , P1 have passed, and the film feed motor is stopped. As a result, the state shown in FIG. If you shoot here,
The screen Fa is formed by a half-frame formed by the light shielding plates 33 and 34.
Is exposed to form a second half screen Fc.

When the second half screen Fc is formed, the CPU starts the film feed motor in the normal rotation direction. At this time, the second photosensor PB detects the perforation P2 located at the upper right of FIG. , P1 are detected, and the film feeding motor is stopped. As a result, the state shown in FIG.

At the time of printing in the laboratory, the first
The half screen Fb and the second half screen Fc are divided into the screen Fa as one frame.
Is printed the same as That is, the prints obtained by the first half screen Fb and the second half screen Fc are handed to the user in a connected state. Accordingly, the user separates the print obtained by the first half screen Fb and the second half screen Fc by himself.

As described above, the first half screen F separately shot
b and the second half screen Fc.
Since the printing is performed in the same manner as that of the conventional printing machine, a conventional printing machine can be used as it is. However, if there is too much density difference between the negatives of the first and second half screens Fb and Fc on the left and right, it is difficult to print with proper exposure. Therefore, the present camera is configured such that after forming the first half screen Fb, it is impossible to return to the state where the screen Fa is formed when the second half screen Fc is not formed. This will be described later with reference to the flowchart. However, before the image is captured in the state of FIG. 4C and the second half screen Fc is not formed, FIG.
The state of (A) cannot be returned.

In the state shown in FIG. 4B, the first half screen F
When b is not formed, the state shown in FIG. 4A can be returned. At this time, the CPU starts the film feeding motor in the normal rotation direction, and stops the film feeding motor by detecting that the first photosensor PA has passed only the perforation P1 on the right side.

Further, the user obtains a print in which the images of the first half screen Fb and the second half screen Fc are connected, and
You will separate them yourself, but if the images have similar backgrounds, the boundaries are difficult to see. Therefore, it is desirable that the boundary where the first half screen Fb and the second half screen Fc are connected is made clear by making a double-exposure into a whitish boundary band or an unexposed black boundary band. In order to form a double-exposed boundary zone, at least one of the light-shielding plate 33 and the light-shielding plate 34 may be formed to have a shorter length in the film feeding direction. In this case, the length of at least one of the light shielding plate 33 and the light shielding plate 34 in the film feeding direction may be made longer.

Further, variations in the positions of the perforations P1 and P2 in the film F and the second photo sensor P
The boundary between the first half-screen Fb and the second half-screen Fc is formed as one line due to variations in the positions of B and the third photosensor PC and variations in the time until the film feed motor stops rotating. hard. Therefore, the film is stopped downstream of the position where the first half screen Fb is normally formed, or the film is stopped upstream of the position where the second half screen Fc is normally formed. Or at least one of them. Specifically, the second photosensor PB is disposed slightly downstream of the normally set position in the feeding direction, or the third photosensor PC is slightly upstream of the normally set position in the feeding direction. If at least one of the two is arranged on the side, the adjacent first
The boundary between the half screen Fb and the second half screen Fc is a double-exposed boundary band.

Further, the film may be stopped upstream of the position where the first half screen Fb is normally formed, or may be stopped downstream of the position where the second half screen Fc is normally formed. At least one of stopping the film may be performed. Specifically, the second photo sensor PB
Is disposed slightly upstream in the feeding direction from the theoretically set position, or at least one of the third photosensor PC is disposed slightly downstream in the feeding direction from the theoretically set position. If either one is performed, the boundary between the adjacent first half screen Fb and second half screen Fc becomes an unexposed black boundary band.

Next, the circuit configuration of the main part of the camera according to the present invention will be described with reference to the block diagram of FIG.

The CPU 40 controls each circuit and electric components as shown in a flowchart described later. The photometry circuit 41 measures the subject brightness based on the subject light incident on the photometry window 3. The distance measurement circuit 42 measures the subject distance by infrared light emitted from the light emitting window 4, reflected by the subject, and incident on the light receiving window 5. The lens drive circuit 43 has a lens drive motor, extends the lens barrel 1 from the retracted state, and extends the lens barrel 1 to a focus position based on the distance measurement result of the distance measurement circuit 42. The feeding circuit 45 has a film feeding motor and feeds the film as described above. The strobe circuit 46 emits strobe light from the strobe light emission window 6.

The display unit 13 is the same as that shown in FIG. 2, and will be described later in detail. The light shield driving unit 47 has a light shield motor and drives the light shield 33 and the light shield 34 shown in FIG. A first photosensor PA, a second photosensor PB,
The third photosensor PC is the same as that described with reference to FIG.

The classic switch C-SW, the high-vision switch H-SW, the panorama switch P-SW, and the half-screen shooting switch W-SW are the print type switching lever 1
Switching is performed sequentially by the operation of 2. The main switch M-SW is turned on by operating the main switch lever 14. S1-SW is turned on when the release button 7 is half-pressed, and S2-SW is turned on when the release button 7 is further depressed. R-SW is halfway rewind button 1
It is turned on by pressing operation 7.

Next, an example of display on the display unit 13 will be described with reference to FIG. FIG. 6A shows the print type switching lever 1 before the main switch lever 14 is operated.
FIG. 3 is a diagram when any one of C, H and P is set according to FIG. At this time, for example, only the number of shot frames 13a indicating that 24 frames have been shot is displayed.

FIG. 6B shows a state in which the print mode switching lever 12 is set to the half-screen shooting mode before the main switch lever 14 is operated. At this time, a half-screen shooting mode symbol 13b indicating a half-screen shooting mode is displayed in addition to the number of shot frames 13a.

FIG. 6C similarly shows that before the main switch lever 14 is operated, a half-screen photographing mode is set by the print type switching lever 12, and only the first half-screen Fb is formed by photographing, and then normal photographing is performed. It is a figure when switching to a mode or performing a rewinding operation. At this time, a black and white inverted display is repeatedly displayed on the left half of the half-screen shooting mode symbol 13b to give a warning.

FIG. 6D is a diagram when the main switch M-SW is turned on by operating the main switch lever 14 and the print type switching lever 12 is set to C, H or P. In this case, the number of shots is 1
In addition to 3a, a shooting mode signal 13c indicating AUTO, which is a basic shooting mode, and a date (for example, December 25) 13d for shooting a date are displayed.

Each time the photographing mode button 15 is operated, the display of AUTO in the photographing mode symbol 13c disappears, and symbols indicating the strobe on mode, strobe off mode, portrait night view mode, red eye reduction mode and exposure correction mode are displayed. It is displayed sequentially.

FIG. 6E is a diagram when the main switch M-SW is turned on by operating the main switch lever 14 and the half-screen photographing mode is set by the print type switching lever 12. At this time, a half screen shooting mode symbol 13b indicating the half screen shooting mode is further displayed. In addition,
This is a state where neither the first half screen Fb nor the second half screen Fc is photographed.

FIG. 6F shows a print type switching lever 1.
2 is a diagram when a half-screen shooting mode is set by 2 and only the first half-screen Fb is shot. At this time, the left half of the half-screen shooting mode symbol 13b is displayed in black.

FIG. 6G shows a print type switching lever 1.
2 is a diagram illustrating a case where the half-screen shooting mode is selected by 2 and only the first half-screen Fb is shot, and the print type switching lever 12 is operated to switch to the normal shooting mode or perform rewinding. At this time, a black and white inverted display is repeatedly displayed on the left half of the half-screen shooting mode symbol 13b to give a warning.

Next, the operation of the camera will be described with reference to FIGS. First, in the flowchart of FIG. 7, when a battery is inserted into the camera, the circuits and mechanisms including the CPU 40 are initialized (101). next,
It is determined whether or not the print type switching lever 12 is set to the half screen shooting mode (102).

If the half-screen shooting mode is not set, the half-screen shooting switch W-SW is not turned on (102
N) Then, it is determined whether or not a film is loaded in the camera (103).

If a film is loaded (Y in 103), it is determined whether or not the W flag, which is a flag indicating whether or not exposure has been performed in the half-screen shooting mode, is 0 or 1 (104). The fact that the W flag is 0 indicates that the exposure has not been performed and both the first half screen Fb and the second half screen Fc have not been formed. The fact that the W flag is 1 indicates that the exposure has not been completed. Only one half screen Fb is formed and the second half screen Fc
Shows a state in which is not formed. If the W flag is 0 (0 in 104), the number of shot frames 13a is displayed on the display unit 13 (106). If the W flag is 1 (1 in 104), the display unit 13 displays as shown in FIG. A warning is displayed and (1
05), the number of shot frames 13a is displayed on the display unit 13 (1).
06). Then, the process proceeds to the operation flow shown in FIG.

If the half-screen photographing switch W-SW is not on (N of 102) and no film is loaded (1)
N of 03), the W flag is set to 0 (107), and the display unit 1
The number 13a of photographed frames of 3 is displayed as 0 (108), and the flow shifts to the operation flow 120.

If the half-screen shooting mode is set, the half-screen shooting switch W-SW is on (Y in 102), and it is then determined whether or not a film is loaded (109).

If no film is loaded (109
N), the W flag is set to 0 (110), and the display unit 13 displays that it is in the half-screen shooting mode as shown in FIG. 6B (111).

If a film is loaded (Y in 109), it is determined whether the W flag is 0 or 1 (112). If the W flag is 0 (0 of 112), the number of frames 13a to be shot is displayed on the display unit 13 as it is as shown in FIG. 6B (113), and the display of the half-screen shooting mode is displayed on the display unit 13. (111), and the process proceeds to the operation flow of FIG.

If the W flag is 1 (1 of 112), FIG.
As shown in (C), the number of shot frames 13a is displayed on the display unit 13 (114), and a warning is displayed on the display unit 13 (11).
5), the process proceeds to the operation flow of FIG.

Next, in the operation flow of FIG. 8, when the rewind switch R-SW is turned on by pressing the rewind button 17 in the middle (Y of 121), the process proceeds to the rewind flow shown in FIG. And then return to step 121.

Without turning on the rewind switch R-SW (1
When the main switch M-SW is turned on by operating the main switch lever 14 (N of 21), the photographing mode and the like are displayed on the display unit 13 to indicate that the photographing state has been entered (Y of 122). 123). At this time, if any of the normal shooting modes C, H, and P has been set, FIG.
If the half-screen shooting mode is set, the display of FIG. 6E is displayed. Subsequently, the photographing lens is extended to the initial position (124), and the strobe is charged (1).
25), the process proceeds to the half-screen shooting mode flow 130.

In the half-screen shooting mode flow of FIG.
By operating the print type switching lever 12, the operation of setting the half-screen shooting mode to any of the normal shooting modes C, H, and P is not performed (N of 131), and the normal shooting mode is set to the half-screen shooting mode. If no operation is performed (N in 132), it is determined whether or not the half-screen shooting mode is set (133).

If the half-screen shooting mode is set and the half-screen shooting switch W-SW is on (Y in 133),
It is determined whether the W flag is 0 or 1 (134). If the W flag is 0 (0 in 134), it is determined whether or not the light shielding plates 33 and 34 are inserted by a light shielding plate detecting means (not shown) so as to form a half-frame (135). , 34
Is not inserted (N of 135), the light shielding plate 33,
34 is inserted (136), and if the light shielding plates 33 and 34 are inserted (Y of 135), the display unit 13 is directly displayed in FIG.
A display is made to indicate that the first half screen Fb is to be photographed, as in (E) (137). Then, control goes to a step 161 in FIG.

If the W flag is 1 (1 of 134), a display indicating that the second half screen Fc is to be taken as shown in FIG. 6F is displayed on the display unit 13 (138). Then, control goes to a step 161 in FIG.

If the camera is not set to the half-screen shooting mode,
If the half-screen shooting switch W-SW is off (N in 133) and the W flag is 0 (0 in 139), the process proceeds to step 161 in FIG. If the W flag is 1, (1
39-1), a warning is displayed on the display unit 13 as shown in FIG. 6G (140) (140), and the routine proceeds to step 133.

When the operation of switching from the half-screen shooting mode to any of the normal shooting modes C, H, and P by the print type switching lever 12 is performed (Y of 131), W
It is determined whether the flag is 0 or 1 (141). If the W flag is 0 (0 of 141), the quarter of the screen length in the film feeding direction is wound up (142), and the light shielding plates 33, 34 Is saved (143), the display unit 13 displays that the photographing state is as shown in FIG. 6D (144), and the process proceeds to step 161 in FIG. If the W flag is 1 (1-1 of 141), a warning display as shown in FIG. 6G is performed on the display unit 13 (145), and the routine proceeds to step 133.

Switching from the normal shooting mode to the half-screen shooting mode is not performed by switching the half-screen shooting mode by the print type switching lever 12 to any of the normal shooting modes C, H, and P (N in 131). When the operation is performed (Y in 132), it is determined whether the W flag is 0 or 1 (146). If the W flag is 1 (1 in 146), the process proceeds to step 133. If the W flag is 0 (0 of 146), rewind 1/4 of the screen length in the film feeding direction (147), and insert the light shielding plates 33 and 34 (148).
A display indicating that the first half screen Fb is to be taken as shown in FIG. 6E is displayed on the display unit 13 (14).
9). Then, control goes to a step 161 in FIG.

Here, when only the first half screen Fb is formed by exposure and the second half screen Fc is not formed,
It is assumed that the operation of switching from the half-screen shooting mode to one of the normal shooting modes C, H, and P by the print type switching lever 12 is performed. Then, in step 145 from Y in step 131 via 1 in step 141,
A warning display as shown in (G) is performed, and a warning display is performed in step 140 from N in step 133 through 1 in step 139. Then, returning to step 133 again,
It is impossible to escape from the flow loop, and the warning display is continued. In order to get out of the loop, it is necessary to return to the half screen photographing mode and form the second half screen Fc by exposure.

Here, when the print type switching lever 12 is operated to switch from the normal shooting mode to the half-screen shooting mode, or when the mode is changed from the half-screen shooting mode to the normal shooting mode, it is confirmed that the switching has been reliably performed. For confirmation, it is desirable that the switched shooting mode is not set immediately, but set several seconds later.

Subsequently, in FIG. 8, the release button 7
Is pressed halfway to turn on S1-SW (161
(Y), the flow shifts to the release flow 170.

In the release flow of FIG. 10, the photometry is performed by the photometric means 41 (171), the distance is measured by the distance measuring means 42 (172), and the release button 7 is further pressed to turn on the S2-SW. If it is (Y in 173), the photographing lens L is advanced to the focus position based on the result of the distance measurement, and the shutter is opened and closed based on the result of the photometry to perform photographing (174). If the luminance is low, the strobe light is emitted. Subsequently, film winding is performed in a winding flow 180.

Here, the winding flow is shown in FIGS.
It will be described based on. First, in FIG. 11, if no film is loaded (N in 181), the process returns to the original state.
If a film is loaded (Y in 181), the film feed motor is started (182) and the film is wound. Here, if the half-screen shooting switch W-SW is off (N in 183), it is determined whether or not it is the last frame (18).
4) If the last frame (Y in 184), the rewinding flow 23
Rewinding is performed at 0, and the process returns to step 121. If it is not the last frame (N of 184), the first photosensor PA
To count two pulses (185), and stop the film feed motor (186). Then, the number of shot frames 13a on the display unit 13 is moved forward by one frame and displayed (18).
7) Return to the original.

If the half-screen photographing switch W-SW is on (Y in 183), the process proceeds to FIG. 12 to determine the W flag (191). If the W flag is 0 (0 in 191), the W flag is reset. 1 (192), and 3
The pulse is counted (193), and the film feed motor is stopped (194). Then, FIG.
A display indicating that the second half screen Fc is to be taken, as in (F), is displayed (195), and the process returns to the original state.

If the W flag is 1 (1 in 191), the W flag is set to 0 (196), and it is determined whether or not the last frame is present (197). If the last frame is present (Y in 197), rewinding is performed. Rewinding is performed in flow 230, and the process returns to step 121. If it is not the last frame (N in 197), two pulses are counted by the second photosensor PB (198), and the film feed motor is stopped (199). Then, the number of frames 13a to be shot on the display unit 13 is advanced by one frame and displayed (200), and a display indicating that the first half screen Fb is to be shot as shown in FIG. Go (201) and return.

Returning to FIG. 10, after the winding flow 180, the strobe is charged (211), and step 1 in FIG.
Return to before 21.

In FIG. 10, if S2-SW is not ON (N in 173) and S1-SW remains ON (17
5), before returning to step 173, if S1-SW is turned off (N of 175), step 12 of FIG.
Return to before 1.

In FIG. 8, if the S1-SW is not turned on (N of 161), the state of the main switch M-SW is checked (221), and if the main switch M-SW is turned on (N of 221). Returning to step 121, if the main switch M-SW is off (Y in 221), the lens barrel 1 is retracted (222). At this time, if the W flag is 0 (0 of 223), the display indicating the shooting state as shown in FIG. 6B is deleted from the display unit 13 (224), and if the W flag is 1, (1 of 223); A warning is displayed on the display unit 13 as shown in FIG. 6C (225).

In FIG. 8, when the rewind switch R-SW is turned on by pressing the midway rewind button (121).
(Y), the process proceeds to the rewind flow 230. The rewind flow 230 will be described with reference to FIG.

In FIG. 13, if the W flag is 0, (2
31-0), the lens barrel 1 is retracted (23)
2) Rewind (233), and return to before step 121. If the W flag is 1 (231 of 1), the display unit 13
A warning is displayed as shown in FIG. 6G (234), and the process returns to the step 121.

Here, in the flowchart described above, when the W flag is 1, that is, when only the first half screen Fb is formed by exposure and the second half screen Fc is not formed, The rewinding operation was not performed even if the rewinding operation was performed, and the normal photographing mode was not set even if the switching operation to the normal photographing mode was performed.

In this regard, when only the first half screen Fb is formed, when the rewind operation is performed or when the operation for switching to the normal photographing mode is performed, the second half screen Fc is performed.
May be forcibly exposed. Such a configuration will be described with reference to FIGS.

First, FIG. 14 is a flow chart of the half-screen shooting mode flow, which is similar to the flow chart shown in FIG. 9. Steps 331 to 340 and steps 346 to 349 are steps 131 to 140 in FIG. And steps 146 to 149. Therefore, the common flow will not be described, and only different flows will be described.

When the operation of switching from the half-screen photographing mode to any of the normal photographing modes C, H, and P by the print type switching lever 12 is performed (Y of 331), W
It is determined whether the flag is 0 or 1 (341). If the W flag is 0 (0 of 341), a quarter of the screen length in the film feed direction is wound up as in FIG. 9 (342), Light shield plate 3
3 and 34 are retracted (343), and the display unit 13 displays FIG.
A display indicating that the camera is in the shooting state as shown in (D) is made (34).
4), proceed to step 161 in FIG.

On the other hand, if the W flag is 1 (341-1), the position of the second half screen Fc is forcibly exposed by the LED (351). That is, FIG. 15 is a perspective view showing a state in which the position of the second half screen Fc is exposed by the LED 37 in the state of FIG.
The ED 37 is turned on temporarily to expose the position of the second half screen Fc. After the exposure, the W flag is set to 0 (352), and the routine goes to step 342 described above.

If the LED 37 is in the vicinity of the picture frame 32, it is not necessary to arrange it below, or a lamp may be used instead of the LED.

FIG. 16 shows a rewind flow, which is similar to the flowchart shown in FIG. 13, and steps 431 to 433 are common to steps 231 to 233 in FIG. Therefore, the common flow will not be described, and only different flows will be described.

In FIG. 16, if the W flag is 1, (4
31-1) In the same manner as described above, the LED 37 is primarily turned on to expose the position of the second half screen Fc (434). After the exposure, the process proceeds to step 432 described above.

When the W flag is 1 (1 of 341 or 1 of 431), the second half screen Fc may be formed by automatically opening and closing the shutter without using an LED or the like. In this case, the automatic focusing mechanism is deactivated and the focusing of the photographing lens is not performed, and only the automatic exposure mechanism may be activated to attain proper exposure. As a result, the automatically formed second half screen Fc is out of focus, the composition is random, and when the film is further rewound, it is the final screen. It is easy to see that it is not.

As described above, the second half screen F is controlled by the LED 37 or the like.
When the exposure is performed at the position c, even if the second half screen Fc is not clearly formed, the density difference from the first half screen Fb is reduced, and an appropriate print of the first half screen Fb can be obtained.

In the above-described embodiment, the center of the screen coincides with the optical axis of the photographing lens L in both the normal photographing mode and the half-screen photographing mode. Sent. However, in the half-screen shooting mode, the center of the half-screen does not coincide with the optical axis of the shooting lens L, and the film exposes the left half screen and the right half screen respectively in the normal shooting mode position. In this way, the film feed may be the same as in the normal shooting mode even when the half-screen shooting mode is set.

An image frame switching mechanism having such a configuration will be described with reference to FIG. In FIG. 17, when the shutter 51 is opened, the subject light is exposed on the film F by the taking lens L. Print type switching lever 12
Is set to one of the normal photographing modes C, H, and P, the state is as shown in FIG. 17A, and a 27.4 mm × 15.6 mm screen is formed on the film F by the image frame 52. The film is fed to the left and right in FIG.

When the print type switching lever 12 is switched to W to set the half screen shooting mode, the CPU drives the light shielding plate motor to rotate the light shielding plate 54 in the counterclockwise direction, and the image frame 52 in the film feeding direction. 17B is shielded from light, and the state shown in FIG. 17B is obtained. Here, when photographing is performed, a film having an area of about １ ／ located on the left side of the image frame 52 is exposed, and a first half screen is formed.

Next, without feeding the film, the light shielding plate 54
17 is rotated clockwise to retract, and the light shielding plate 53 is rotated clockwise to shield approximately half the area located on the left side of the image frame 52 in the film feeding direction.
(C). When photographing is performed, a film having an area of about １ ／ located on the right side of the image frame 52 is exposed to form a second half screen. Thereafter, the film is wound up in the same manner as in the normal photographing mode, and the above operation is repeated. When the normal shooting mode is set, the light shielding plates 53 and 54 are retracted,
The state shown in FIG.

In this case, as long as the photographing is not completed in the state shown in FIG. 17C, control can be performed so that the state cannot be returned to the state shown in FIG. 17A or rewinding cannot be performed. It is.

In this case, only the above-mentioned first photosensor PA is used for the feeding control of the film F, and the second photosensor PB and the third photosensor PC are unnecessary.

Further, also in this case, the length of at least one of the light shielding plates 53 and 54 in the film feeding direction is made shorter to double-expose the boundary line between the first half screen and the second half screen, Making the boundary between the first half screen and the second half screen unexposed by making the length of at least one of the light shielding plates 53 and 54 in the film feeding direction longer and making the boundary line clearer Is desirable.

In addition, in FIG. 3 and FIG. 17, an LE perpendicular to the film feeding direction is provided near the image frames 32 and 52.
A D array may be provided to double-expose the boundary between the first half screen and the second half screen.

Further, in the present invention, even when the IX240 film is used as the film F and the half-screen shooting mode is set, the screen formed by exposure corresponds to the H type. However, it is desirable that the print type for magnetic recording on the film be the C type. However, when a camera capable of selecting the H type is used, the print type switching lever may be configured to be able to select two half-screen shooting modes of the C type and the H type.

Further, the film is not necessarily limited to the IX240 film, but may be a 110 film or a 12 film.
Any film may be used as long as the position of the screen is predetermined for a predetermined perforation, such as six films.

Finally, the correspondence between the terms described in the claims and the terms described in the embodiments of the invention will be described.

The image frame switching means includes a print type switching lever 12, a light shielding plate driving section 47, and light shielding plates 33, 34, 53, and 5.
Equivalent to 4.

The film feeding means corresponds to the feeding circuit 45. The control means corresponds to the CPU 40.

[0104]

According to the cameras described in the first to second, seventh, eighth, and eighteenth aspects, the film feeding control can be performed by the photo sensor in accordance with the photographing situation.

According to the camera described in any one of claims 3 to 8, and 18, the boundary between the first half screen and the second half screen becomes clear.

According to the cameras described in claims 9 and 18,
Film feed control becomes easy. Claims 10, 15-1
According to the camera described in No. 9, since the film cannot be rewound in a state where only one half screen is formed, there is no problem that it is difficult to obtain a proper print due to a negative having a density difference.

According to the camera of the present invention, if the film is to be rewound while only one half screen is formed, the other half screen is automatically exposed. And a negative print having a small density difference is obtained, and an appropriate print is obtained.

According to the cameras of the fourteenth to nineteenth aspects, the normal photographing mode cannot be set in a state in which only one half screen is formed. There is no problem that it is difficult to obtain.

[Brief description of the drawings]

FIG. 1 is a perspective view of a camera as viewed from the front.

FIG. 2 is a perspective view of the camera as viewed from the rear.

FIG. 3 is a cross-sectional view of an image frame switching mechanism.

FIG. 4 is an explanatory diagram of film feeding.

FIG. 5 is a block diagram of a circuit of a main part.

FIG. 6 is an example of a display on a display unit.

FIG. 7 is a flowchart from a start to an operation flow.

FIG. 8 is a flowchart of an operation flow.

FIG. 9 is a flowchart of a half-screen shooting mode flow.

FIG. 10 is a flowchart of a release flow.

FIG. 11 is a flowchart of a hoisting flow.

FIG. 12 is a flowchart of a hoisting flow.

FIG. 13 is a flowchart of a rewind flow.

FIG. 14 is a flowchart of a half-screen shooting mode flow of another embodiment.

FIG. 15 is a perspective view showing a state in which an LED is used to expose a second half screen position.

FIG. 16 is a flowchart of a rewind flow of another embodiment.

FIG. 17 is a cross-sectional view of an image frame switching mechanism of another embodiment.

[Explanation of symbols]

 F Film Fa screen Fb First half screen Fc Second half screen P1, P2 Perforation L Photographing lens PA First photosensor PB Second photosensor PC Third photosensor W-SW Halfscreen photography switch 12 Print type switching lever 13 Display Parts 32,52 picture frames 33,34,53,54 light shielding plate 37 LED 40 CPU 45 feeding circuit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) G03B 7/00 G03B 7/00 B 17/02 17/02 17/24 17/24 17/28 17/28 EZ F term (reference) 2H002 AB01 BB05 BB08 BB11 BB13 FB21 GA57 GA58 GA59 HA11 HA12 HA28 2H020 DD00 DD01 MA04 MA07 MC13 MC15 MC18 MC41 MC68 MC71 MC77 MC84 MC85 MC92 MC94 MD01 MD05 MD12 MD14 ME02 ME03 ME04 ME06 ME07 ME14 ME AA11 BB05 BB06 2H103 AA21 AA22 AA23 BA01 BA32 BA34 BB02 CA01

Claims (19)

[Claims] 1. A camera using a film in which the position of a screen is predetermined for a predetermined perforation, wherein both ends in the feeding direction of the film in an image frame forming the screen have an area of about 1/4 each. An image frame switching unit capable of switching to a half image frame having an area of about 画 of the image frame, a film feeding unit for feeding the film, and the image frame switching unit. When not switching to the half-frame, the first photosensor for detecting that the film is fed to the position where the screen is formed by the frame and the half-frame are switched by the frame switching means. A second photosensor for detecting that the film has been fed to a position where the first half screen having an area of about ２ the area downstream of the screen in the feeding direction is formed by the half screen frame; Image frame switching means After the first half screen is formed, the half screen is formed at the position where the second half screen having an area of about 1/2 of the upstream side of the screen in the feeding direction is formed by the half screen frame. A third photosensor for detecting that the film has been fed. 2. The camera according to claim 1, wherein the third photosensor, the first photosensor, and the second photosensor are arranged in this order from the downstream side in the feeding direction of the film. 3. A camera using a film in which the position of a screen is predetermined for a predetermined perforation, wherein both ends in the feeding direction of the film in an image frame forming the screen have an area of about 1/4 each. An image frame switching unit capable of switching to a half image frame having an area of about 画 of the image frame, a film feeding unit for feeding the film, and the image frame switching unit. When the film is fed to the half picture frame and the film is fed, the feeding direction is slightly smaller than the position where the first half screen having an area of about half the downstream side in the feeding direction of the screen is formed by the half picture frame. When the film is stopped on the downstream side or when the film is fed after the first half screen is formed, the area of about ２ of the upstream side of the screen in the feeding direction of the screen is reduced by the half frame. Position where the second half screen is formed Performing at least one of film feeding control of stopping the film slightly upstream in the feeding direction, and performing a boundary exposure between the first half screen and the second half screen by double exposure. A camera characterized by the following. 4. A position where a first half screen having an area of about half the area downstream of the screen in the feeding direction is formed by the half screen frame when the screen is switched to the half screen frame by the screen frame switching means. A second photosensor for detecting that the film has been fed, and switching to the half-frame by the frame switching means;
After the first half screen is formed, it is detected that the film has been fed to a position where the second half screen having an area of about half the upstream side in the feeding direction of the screen is formed by the half screen frame. A third photosensor, wherein the second photosensor is disposed slightly downstream in the feeding direction from a position set properly, or the third photosensor is set slightly smaller than a position set properly. 4. The camera according to claim 3, wherein at least one of the camera and the camera is arranged on the upstream side in the feeding direction. 5. In a camera using a film in which the position of a screen is predetermined for a predetermined perforation, each of both ends in the feeding direction of the film in an image frame forming the screen has an area of about ４. An image frame switching unit capable of switching to a half image frame having an area of about 画 of the image frame, a film feeding unit for feeding the film, and the image frame switching unit. When the film is fed to the half picture frame and the film is fed, the feeding direction is slightly smaller than the position where the first half screen having an area of about half the downstream side in the feeding direction of the screen is formed by the half picture frame. When the film is stopped on the upstream side or when the film is fed after the first half screen is formed, the area of about half the upstream side in the feeding direction of the screen by the half picture frame is reduced by the half picture frame. Position where the second half screen is formed By performing at least one of film control of stopping the film slightly further downstream in the feeding direction, setting a boundary between the first half screen and the second half screen as an unexposed boundary band. Features camera. 6. A position where a first half screen having an area of about half the downstream side of the screen in the feeding direction is formed by the half screen frame when the screen is switched to the half screen frame by the screen frame switching means. A second photosensor for detecting that the film has been fed, and switching to the half-frame by the frame switching means;
After the first half screen is formed, it is detected that the film has been fed to a position where the second half screen having an area of about half the upstream side in the feeding direction of the screen is formed by the half screen frame. A third photosensor, wherein the second photosensor is disposed slightly upstream in a feeding direction from a position set properly, or the third photosensor is set slightly smaller than a position set normally. 6. The camera according to claim 5, wherein at least one of the camera and the camera is arranged on the downstream side in the feeding direction. 7. The photosensor according to claim 1, wherein the first photosensor, the second photosensor, and the third photosensor detect perforation of the film.
The camera according to any one of claims 6 to 13. 8. A control means for obtaining detection information of the first photosensor, the second photosensor, and the third photosensor, and controlling the film feeding means to stop the film feeding. Any one of claims 1 to 7
Camera according to item. 9. In a camera using a film in which the position of a screen is predetermined for a predetermined perforation, a second area having an area of about ２ from the substantially center of the screen to the downstream side in the feeding direction by two exposures. A camera, wherein one half screen and a second half screen having an area of about １ ／ of the upstream side in the feeding direction can be formed, and the first half screen is formed first. 10. In a camera using a film in which the position of a screen is predetermined for a predetermined perforation, a normal shooting mode in which the screen is exposed once,
A half-screen shooting mode for forming a half-screen of approximately one-half area and a half-screen of the other half area from substantially the center of the screen in the film feeding direction by two exposures; Control means for switching to the half-screen shooting mode and controlling so that a rewind operation is not performed even when a rewind operation is performed when only the one half screen is exposed. A camera comprising: 11. A normal photographing mode for exposing the screen once, in a camera using a film whose screen position is predetermined for a predetermined perforation,
A half-screen shooting mode for forming a half-screen of approximately one-half area and a half-screen of the other half area from substantially the center of the screen in the film feeding direction by two exposures; When a rewinding operation is performed when only the one half screen is formed by switching to the half screen shooting mode, the illuminating means arranged near the film is used to switch the other half screen mode. And a control unit for performing a rewind operation after exposing a half screen position. 12. In a camera using a film in which the position of a screen is predetermined for a predetermined perforation, a normal shooting mode in which the screen is exposed once,
A half-screen shooting mode for forming a half-screen of approximately one-half area and a half-screen of the other half area from substantially the center of the screen in the film feeding direction by two exposures; When a rewind operation is performed when only the one half screen is formed by switching to the half screen shooting mode, the shutter is automatically opened and closed to open the other half screen. And a control means for controlling to perform a rewinding operation after forming the camera. 13. The automatic exposure mechanism according to claim 12, wherein when the shutter is automatically opened and closed to form the other half screen, only the automatic exposure mechanism is operated and the automatic focusing mechanism is deactivated. Camera. 14. A normal photographing mode for exposing the screen once, in a camera using a film in which the position of the screen is predetermined for a predetermined perforation,
A half-screen shooting mode for forming a half-screen of approximately one-half area and a half-screen of another half area from substantially the center of the screen in the film feeding direction by two exposures; In the case where only the one half screen is formed by switching to the half screen shooting mode, the switching to the normal shooting mode is not set to the normal shooting mode. A camera characterized by comprising control means for controlling the camera. 15. The camera according to claim 10, further comprising an operation member capable of switching between the normal shooting mode and the half-screen shooting mode. 16. Control is performed so that a desired photographing mode is set after a predetermined time has elapsed after switching the operation member to the desired normal photographing mode or the half-screen photographing mode. The camera according to claim 15. 17. A half picture frame having an area of about 1/2 of the picture frame, wherein both ends of the picture frame forming the screen in the feeding direction of the film are shielded with an area of about 1/4 each. The camera according to any one of claims 9 to 16, further comprising: an image frame switching unit that can be switched. 18. The camera according to claim 1, wherein the film is an IX240 film. 19. The camera according to claim 10, wherein when the mode is switched to the normal shooting mode, a C type, an H type, and a P type can be set.