JPH01315727A - Movie shooting method and apparatus - Google Patents

Abstract

PURPOSE: To take a normal size picture and a wide screen picture with one camera by constituting a film so as to make the second longitudinal direction of an aperture coincident with the direction of a film path, when the film passes through the aperture. CONSTITUTION: The film 28 is separated from a sprocket 68 and then passes through a sprocket 82 having 24 teeth on the upstream side. But after that, the film 28 guided by a film holding member 86 at this time passes through a straight path from the outer periphery of the sprocket 82, and then, an aperture plate assembly 92 away from an aperture 91 by about 0.006-0.008 inch and is fed to a sprocket 94 having 16 teeth on the downstream side. The film 28 is guided around the sprocket 94 by film holding members 98 and 100. After that, the film 28 is fed to a sprocket 104 having 16 teeth and held at the position of the sprocket 104 by film holding members 108 and 110.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a movie camera, particularly for capturing regular or actual widescreen images on 35 mm film, and for capturing film on 35 mm film as the film is advanced. This article relates to a universal movie camera under constant control.

(Prior Art) Widescreen movies are typically made in 65mm and 70m formats using known film transport and exposure methods.
Photographed using equipment of m.

In conventional equipment, 2.200 inches (approximately 5.58
The film is transported in a direction perpendicular to the long sides of a generally rectangular aperture having dimensions of 8 cm) x Q, 981 inches. Therefore, the film must be wide enough to accommodate the very wide apertures used in the above formats. On the other hand, the film and the equipment required to expose and develop this film are very expensive. Yes, not only because the special purpose film itself is expensive, but also because special labs and techniques must be used to process and edit the film. is about five times that of conventional 35mm movies.

To illustrate this problem, a 1000 foot (304,8 m) roll of 65 mm film typically results in a final product of about 9 minutes of film. However, to produce a final film of 9 minutes, the industry average is a shooting ratio of approximately 5:1. In other words, the film for screening as a final product is 10
5000 feet (1524
m) must be photographed. For films requiring special effects, a ratio of about 20 to 1 is not uncommon. This is due to the numerous insertions through the printer and matte processing required. Thus, the final cost of shooting a movie using widescreen film is prohibitive compared to the cost of shooting a movie using 35mm film.

Another drawback of known systems lies in the way the film passes through the aperture within the camera. In conventional systems, a pull-down pawl projects from a pull-down mechanism, extends through a perforation in the film, and then pulls the film down through the aperture. Thereafter, the pull-down pawl moves into the pull-down mechanism and moves to the retraction start position. From there the pawl protrudes again from the pull-down mechanism and
The main drawback of this type of drive mechanism is that the film is not engaged with the pull-down pawl when it returns to its starting position.

Therefore, there is a period where the drive mechanism does not control the drive mechanism. Unfortunately, this period corresponds to the period when the aperture is open for film exposure. If the film is misaligned, the scene to be exposed will be slightly out of film alignment. Additionally, there is a risk of damaging the film while inserting and removing the pull-down tab into the film perforations. When this happens, it can lead to a serious accident.

Controlling film movement through the aperture1
One attempt is to use a film guide near the aperture. The film guide has a path for the film to travel through the aperture. Unfortunately, however, the uses of film guides are limited. In other words, when the speed is high, the film tends to flap or warp. This results in severe damage to the film. Pressure plates may be used to overcome this problem. This pressure plate presses the film against the aperture as it passes through the aperture. However, the use of such pressure plates creates friction with the film, and this friction generates a significant amount of static electricity. This static electricity attracts dust and debris to the film, which scratches the film as it passes through the pressure plate.

To avoid the high cost of using traditional 65mm or 70mm film, it has been proposed to have the camera aperture facing parallel to the 35mm film, with the long side of the aperture pointing in the same direction as the film path. There is.

This allows widescreen images to be captured on 35mm film. Although this method is a good idea, there are many problems in implementing it. One problem is that the pull-down pawl would have to be configured to pull the film down a much longer distance, which would reduce the size of the camera. This means that it will be quite large.

Furthermore, to support widescreen aperture,
The film must be advanced faster, which exacerbates the alignment, sag, and scratch problems discussed above. Ultimately, the use of 35mm film for widescreen image capture is limited to 8 or 10 perforation reduction systems. Therefore, the actual length of the aperture is approximately 1,49 mm for 8 perforations.
6 inches (approximately 3.8 cm), slightly longer for IO perforations, but the normal 65 m
It falls short of the wide aperture of 2,200 inches (approximately 5.59 cm) used in m or 70 mm cameras.

Ultimately, in order to obtain 65 mm or 70 mm prints, each frame's image must be enlarged during printing using special lenses, and the ability to perform special effects is severely limited.

Finally, over the years many different film formats have been developed, such as those mentioned above, resulting in the need for a separate camera for each format. In order to meet this demand, a huge amount of money would have to be invested in equipment.

OBJECTS AND ARCHITECTURE OF THE INVENTION It is an object of the present invention to provide a method and apparatus that can directly capture regular size images and widescreen images on 35 mm film with a single camera. This camera is capable of taking images with an aperture of 2,200XO, 980 inches or more. The method also involved passing a 35 mm film through a widescreen aperture parallel to the long sleeve of the aperture.

The camera has a film transport and drive mechanism that constantly controls the film to advance it by an amount depending on the desired format. A removable aperture plate also provides precise aperture size for the selected format.

In an embodiment of the invention, 35 mm film is fed from a supply reel through a widescreen aperture by upstream and downstream 24 tooth sprockets in a direction parallel to the long axis of the aperture. A 24-tooth sprocket constantly controls the film and precisely directs it in a straight path as it passes through the aperture.

To advance the film, a stepper motor assembly is electrically and mechanically connected to a downstream 24-tooth sprocket and a continuously rotating shaft of the motor;
The rotation of the shaft is monitored and the film is fed in the correct amount at the correct time. The film is exposed during the rest period of the stepping cycle.

In a 12-perforation imaging system, the stepping motor assembly rotates a 24-tooth sprocket each revolution (12 teeth) in one motion. This is sufficient to pass the film through a 2,200 inch wide aperture.

While the aperture is open, a pair of registration pins extend through the perforations on opposite sides of the film near the aperture, and a pressure plate holds the film on the other side of the pressure plate. Through the action of a 24-tooth sprocket, registration pin, and pressure plate,
Film misalignments and damage are removed.

The stepper motor is set to advance the 24 tooth sprocket by the desired amount (eg, 4, 8, 10.12 teeth, or more). Furthermore, the aperture plate is removable so that the desired aperture size can be inserted into the camera. By changing the settings of this aperture plate and stepping motor, multiple film formats can be created with one camera.

These and other features and advantages of the present invention will become apparent to those skilled in the art from reading the following detailed description and accompanying drawings.

(Example) FIG. 1 is a perspective view of a universal camera IO according to the present invention. The camera 10 has a case 14, and the case 1
4, an objective lens 18 and a TTL type eyepiece lens 20 are attached.

A motor-driven film supply reel 22 and film take-up reel 26 are attached to the rear of the case 14. To make the camera compact, the supply reel 22 is mounted alongside and parallel to the take-up reel 26.

For convenience of explaining the positional relationship of the components inside the case 14, the case 14 is divided into two by a horizontal plane P shown by a chain line. A plane P separates various parts on one side of this plane from various parts on the other side. One side of this surface is PI
The other side is indicated by P2.

FIG. 2 is a perspective view of a film transport mechanism used in camera 10. As shown in FIG.
an aperture (not shown) from the supply reel 22 on the P2 side of the
It passes through and enters the case IO, where it is received by rollers 32.

Roller 32 connects to film feed friction clutch assembly 38
It is rotatably attached to the upper part of the rotating arm 34 (see FIG. 5). The lower part of the rotating arm 34 is a shaft 42
It is rotatably attached to the case 14 by. The clutch 38 will be explained in detail later.

After the film 28 passes around the roller 32 of the rotating arm 34, it passes around a guide roller 50 and advances to another guide roller 54. The film is then driven by a film reversal drive roller 58 and around a guide roller 62 adjacent to the drive roller 58. The film now advances toward the rear of the case 14, forming a loop of 3606 that switches from the P2 side to the Pl side of the plane P, where the film is passed through guide rollers 63 and 64. The film passes through a 16-tooth sprocket 68 on the upstream side from guide rollers 63 and 64, and then passes through a film holding member 72.
and 74 on sprocket 68.

Sprocket 68 is driven continuously at sufficient speed so that film sag 78 is formed. The reason for this will be explained later.

After leaving sprocket 68, film 28 passes through an upstream 24-tooth sprocket 82, where it is guided by film retaining member 86.

Film 28 then passes in a straight path from the outer periphery of sprocket 82 to approximately 0.006 inches (approximately 0.15 mm) to 0,000 inches (approximately 0.2 mm) from aperture 91.
mm) through the aperture plate assembly 92, which is spaced apart;
It is sent to a 16-tooth sprocket 94 on the downstream side. The film 28 is attached to a film holding member 98 around the sprocket 94.
and 100, the film 28 is then fed downstream to a 16-tooth sprocket 104, and is held in place on the sprocket 104 by film holding members 108 and 110.

Film 28 is then fed to guide rollers 114 and then to rollers 118. Roller 118 is rotatably mounted on the top of rotating arm 120 of film winding friction clutch assembly 122 (see FIG. 5).

Finally, film 28 is fed to guide rollers 126 and exits case 14 through a film exit aperture (not shown).

Figures 3A and 3B are cross-sectional views of the power drive mechanism of the present invention. This power drive mechanism is mainly arranged on the PI side of the plane P. As shown in FIG. 3A, the power drive mechanism includes a motor 140 having a continuously rotating shaft 142 coupled to a motor output gear 144. As shown in FIG. Output gear 144 is a power shaft gear 148 attached to power drive shaft 152 via belt 146.
is connected to. As described below, the power drive shaft 152 transfers power from the motor 140 to the film reversing drive roller 58, the sprocket 68 (see FIG. 2), and the film registration pin assembly 154 (6A).
and 6B), sprocket 104 (see FIG. 2), film winding friction clutch assembly 122 (see FIG.
5) and shutter assembly 156 (see FIG. 3B) and shutter assembly 156 (see FIG.
(see figure).

Power drive shaft 152 has a shutter drive gear 158 that meshes with shutter transmission gear 162 . The shutter transmission gear 162 is connected to a mirror drive shaft 166 to which is mounted an inclined mirror drive gear 170 (see FIG. 3B). The mirror drive gear 170 meshes with an inclined mirror transmission gear 174, and the mirror transmission gear 174
is connected to mirror shaft 178. The mirror shaft 178 is fixed at the center of a rotating mirror 182, which forms the shutter of the camera.

The power drive shaft 152 further includes a right angle gear 186 that meshes with a vertical right angle gear 190. Gear 190 transmits power through plane P to film registration pin assembly 154 via shaft 192 .

Right angle gear 190 transmits power via belt 224 to film reversal drive roller 58 and further to film reversal roller drive gear 228 which is mounted coaxially with the film reversal drive roller. Film reversing roller drive gear 228 further transmits power to sprocket drive gear 232 via belt 236. Sprocket drive gear 232 transmits power through shaft 240 through plane P to sprocket 68 .

Right angle gear 190 drives sprocket drive gear 216 via belt 218 to transmit power through plane P to sprocket 104 via shaft 220. Sprocket drive gear 216 transmits power via belt 248 to film wind drive gear 24'4. Film winding drive gear 244 transmits power to film winding friction clutch assembly 122 via shaft 249 .

As shown more clearly in FIG. 5, film wind drive gear 244 forms part of film wind friction clutch assembly 122. As shown more clearly in FIG. Film winding friction clutch assembly 122 operates in response to tension in rotating arm 120 to transmit power to transmission gear 256 via belt 260 . Transmission gear 256 transmits this movement via shaft 268 to film wind drive gear 264, which in turn drives the wind roll mechanism.

A polarized magnetic pin 194 is embedded in the power drive shaft 152 and provides a signal to a sensor 196. Sensor 196 transmits magnetic pulses to stepper motor assembly 198 via line 199. In this embodiment, pin 194 extends across the entire diameter of power drive shaft 152, so sensor 196 detects positive and negative pulses as power drive shaft 152 rotates. However, the pin 194 may extend only a portion of the shaft 152 so that one pulse is output for each rotation of the power drive shaft 152.

Stepping motor assembly 198 is connected to sprocket 9
4 (see FIG. 2) to advance the film 28 through the aperture 91. stepping motor 198
has a drive wheel 200 that meshes with a sprocket drive gear 202. The sprocket drive gear 202 is
Power from stepper motor assembly 198 is transferred to plane P.
through shaft 204 to sprocket 94.

The structure of the film advance mechanism is shown in more detail in FIG. Pulses from sensor 196 are transmitted by line 199 to pulse shaping circuit 206 where they are transformed from magnetic pulses to square wave pulses. This square wave pulse is sent by line 209 to control circuit 208. Control circuit 208 outputs a signal to line 210 to drive stepping motor 211 to advance the film by a desired amount each time shaft 152 rotates. As mentioned above, the magnetic pin 19'4 passes through the shaft 152 and outputs alternating positive and negative pulses each time the shaft 152 rotates 180 degrees. The control circuit n208 is connected to the magnetic pin 19
The stepping motor 211 is activated when it receives one of the positive or negative pulses from 4, and is deactivated when it receives the other pulse. In actual operation, stepper motor 211 only needs 50 milliseconds to advance the film the desired distance.

The intervals between positive and negative pulses function as selective windows during which stepper motor 211 and other circuit elements perform their respective functions.

Reference clock 212 connects the reference clock signal to line 213.
is output to the control circuit 208.

In this example, reference clock 212 is 1440
A reference frequency of Hz is given. The comparison clock 214 outputs a comparison frequency of 60Hz to the control circuit 2 via a line 215.
Output to 08. The control circuit 208 uses the reference clock 212
The signal from the comparison clock 214, along with the signal from the reference clock 214, is used to control the stepping motor 211 so that the film is advanced at a rate of 24 frames per second.

To ensure that the film advances at the correct speed and in synchronism with shutter 182, optical chopper 216 is coupled to gear 186 via a right angle gear (not shown).

Optical chopper 216 has 60 slots therein, each slot outputting 60 pulses per revolution of power drive shaft 152 past optical sensor 217 . Pulses from this optical chopper 216 are transmitted by line 218 to control circuit 208. A servo circuit 219 within control circuit 208 compares the signal from line 218 with the signal output from reference clock 212 to ensure that stepping monitor 211 is operating at the correct rate. A similar circuit may be used to control the speed of motor 140. Servo circuit 219 may be comprised of a phase locked loop (PLL) or other conventional servo machine.

Control circuit 208 receives a select signal from line 220 for determining the amount of rotation of stepping motor 211 . That is, the select signal from line 220 causes stepping motor 211 to move film 28 by either 4.8, 10.12 or the other side, thereby determining the film format.

---Cheer Assembly 1 As shown in FIG. 5, the film winding friction clutch assembly 122 has a film winding drive gear 244 connected to a shaft 249. The drive plate 271 is the shaft 2
It is attached to the opposite end of 49. shaft 24
9 is disposed coaxially within a threaded mount 274, which in turn is disposed coaxially within a clutch friction sleeve 275 and threadedly engaged therewith. The surface 276 of the friction sleeve 275 is the surface 277 of the rotating gear 279.
It forms a supporting surface against the surface. The rotating gear 279 meshes with a gear 280 fixed to the rotating arm 120.

Next, the operation will be described. The gear 244 is driven by the belt 248 to rotate the shaft 249 and the drive plate 271. The friction sleeve 275 presses against the rotating gear 279, and the rotating gear 279 presses against the drive plate 271. Rotating gear 279 then rotates at the same speed as shaft 249 and drive plate 271. If the film winds too quickly, the tension of the film 28 on the rollers 118 will cause the rotary arm 120 to rotate, causing the gear 280 to rotate the friction sleeve drive gear 278. This causes the friction sleeve 275 to separate from the rotating gear 279. This is because the friction sleeve 275 is threadedly engaged with the mount 274.

This reduces the friction between the drive plate 271 and the rotary gear 279, so the rotation of the rotary gear 279 becomes slow (and therefore the speed of the gears 256 and 264 decreases accordingly. Conversely, the tension in the film decreases). and rotating arm 1
20 rotates in the opposite direction, and the friction sleeve 275 moves towards the rotating gear 279. As a result, the rotating gear 279 is at a high speed (and the gears 256 and 264 are at appropriate speeds).

The film feed friction clutch 38 operates on the same principle.

A drive gear (not shown) from the film supply reel 22 driven by a motor meshes with the gear 281.
81 meshes with gear 282. Gear 28 is fixed to shaft 249'. The friction clutch 38 has a friction sleeve 275' and a drive plate 271', which are similar to the friction sleeve 27 of the film winding friction clutch 122.
5 and drive plate 271, they are frictionally coupled.

Friction clutch 38 differs from friction clutch 122 in that friction sleeve 275' is in direct contact with drive plate 271- during operation.

First, the friction sleeve 275' is separated from the drive plate 271', and the shaft 249' rotates at a speed determined by the motor of the film supply reel 22. When the film tension decreases, the rotating arm 34 rotates and the gear 43
rotates gear 278' and friction sleeve 275-. The friction sleeve 275' presses against the drive plate 271',
Due to the friction between these two, the drive plate 271-1, shaft 249-, gear 282, and gear 281 slow down, and the rotation of the film supply reel 22 becomes slow.On the other hand, when the tension of the film increases, the rotating arm 34, the gear 43 and friction sleeve 275' moves in the opposite direction to cause drive plate 271' and the parts connected thereto to rotate faster.

6A and 6B show the aperture plate assembly 92.
and a registration pin assembly 154. Power from the right angle gear 190 is transmitted to the PI side of the plane P via the shaft 192. Shaft 192 is stopped by offset pin 284. A drive link 288 is connected to the offset pin 284, and a drive link 288 is connected to the offset pin 284.
88 is rotatably connected to the registration pin drive shaft 29. The pin drive shaft 292 is
Flange 29 of board 298 attached to case 14
6 through the aperture. The other end of the registration pin drive shaft 292 is fixed to a registration pin mounting block 300. Two registration pins 302 are attached to block 300 and are separated by a distance equal to the distance between the perforations on opposite sides of film 28. The registration pin 302 is connected to the flange 31 of the substrate 298.
4 and by the aperture 310 in the pressure plate 324
The receiver is slidably held by an aperture 320 therein.

Registration pin 302 also attaches to aperture 32 in aperture plate 330 of aperture plate assembly 92 when registration pin mounting block 300 is in the fully extended position.
8 to allow it to slide freely, and the receiver is fixed. Registration pin 302 is placed very close to aperture 91.

Pressure plate 324 is attached to flanges 344 and 3 of base plate 298.
Pressure plate shaft 34 slidably seated within 48
Connected to 0. Restrictions 352 and 353 are rigidly fixed to pressure plate shaft 340, and spring 356
2 and a flange 348 around the pressure plate shaft 340 to bias the pressure plate shaft 340.

This forces the pressure plate 324 toward the aperture plate 330 . The aperture 353 is for linear adjustment of the pressure applied to the film. Aperture 35
Neorene washers 356 are attached to 2 and 353 to suppress sound. Spring 354 is positioned around pressure plate shaft 340 between pressure plate 234 and flange 344 for reasons explained below. Connecting rod 36
0 is rigidly fixed to one end of the registration bin drive shaft 292 and slidably engages the pressure plate 340 at the other end for reasons explained below.

In operation, stepper motor assembly 198 drives the film advance mechanism and the film is guided along the path described above. At the same time, mirror 18
2 rotates to selectively pass light from lens 18 through aperture 91 to expose a film stationary directly in front of aperture 91. After the film is exposed,
The stepping motor 211 advances the 24-tooth sprocket 94 four times to advance the film 28 by 12 perforations (if the control circuit 208 is set to 12 perforations mode), and moves the exposed portion of the film 28 from in front of the aperture 91. The unexposed portion of the film is placed in front of the aperture 91 (upstream 16-tooth sprocket 68 rotates fast enough to create film slack 78, and film 28 is rotated quickly enough to create film slack 78). 94 to prevent it from being cut or damaged when being sent.

Once the unexposed portion of the film 28 is in front of the aperture 91, the offset pin 284 of the rotatable shaft 192 moves the registration bin drive shaft 292 and then the registration pin 302 through the aperture 320 of the pressure plate 324 and The film 28 is moved through the perforation on the opposite side to the aperture 328 of the aperture plate 330. At the same time, the connecting rod 3
60 moves to the left and presses the pressure plate 324 against the film 28. As a result, the film 28 is now attached to the aperture plate 3.
Pressed by a part of 30. Aperture plate 330 defines the boundaries of aperture 91 and maintains it as shown in FIG. 6A. Pressure plate 324 and registration pin 302 thus hold film 28 in neat alignment in front of aperture 91. Once the frame has been exposed, offset pin 284 is rotated to remove registration pin 302 from the perforation of film 28 and remove pressure plate 302, as shown in FIG. 6A.
24 is released from the film 28 and the film is fed again.

The spring 354 is activated when the registration pin 302 is pulled out from the film 28 and when the connecting rod 360 is pulled out from the aperture 35.
2, the pressure plate 324 is biased against the film 28.

Aperture Assembly 1 In order to use different film formats within one camera, it is necessary to change the size of the aperture. Aperture plate assembly 92 performs this function. As previously mentioned, the aperture plate assembly 92
has an aperture plate 330. Aperture plate 33
0 has a groove 404 formed in the holding member 408.
A protrusion 400 is provided that engages with. Each holding member 4
08 has a lug 412 that is slidably secured within a slot 416 of the case 14. The mounting screw 420 is screwed to the wall of the case 14, and the holding member 40
8 is pressed against the aperture plate 330.

If it is desired to replace the aperture plate 330 with another aperture plate, loosen one or more screws 420. This is preferably done through access hole 432 in case 14. Once the original aperture plate 330 is removed,
Install the new aperture plate in its position and tighten screws 4
Fix by 20.

Although the preferred embodiment of the present invention has been described above, it can be modified in various ways. And the scope of the invention is not to be limited, except as properly described in the claims.

The gist of the present invention is described in the claims, and other features are summarized as follows.

(1) Suspend the film onto a first sprocket located on one side of the aperture, the first sprocket having teeth that engage perforations in the film, and thread the film onto a second sprocket located on the opposite side of the aperture. , the second sprocket has teeth that engage the perforations in the film, and rotates the first and second sprockets to advance the film with the teeth of the sprocket by at least 12 perforations, and then 2. The photographing method according to claim 1, wherein the second sprocket is temporarily stopped, and then a shutter for exposing the film is opened.

(2) A photographing method in which the first and second sprockets are continuously rotated until the film advances by at least 12 perforations.

(3) A photographing method in which the film is advanced linearly and approximately parallel to the aperture.

(4) A photographing method in which one of the first and second sprockets has 24 teeth along its circumference, and the sprocket is rotated A to advance the film by 12 perforations.

(5) When the first and second sprockets stop,
A photography method in which a pressure plate is pressed against the film to push the film against the border of the aperture.

(6) A photographing method in which the film is pressed against the entire boundary of the aperture by a pressure plate.

(7) A photographing method in which the film is released from the pressure plate after exposure, and the first and second sprockets are then rotated to advance the film at least 12 perforations.

(8) A photographing method in which, when the shutter is opened, the registration is extended through a perforation of the film located in close proximity to the aperture, thereby fixing the film in a predetermined position.

9. A first sprocket having teeth disposed on one side of the aperture to engage the film; and a second sprocket disposed on the opposite side of the aperture having teeth engaging the film. camera.

(10) a rotation means connected to the first sprocket to rotate the first sprocket and feed the film; and a stop connected to the rotation means to temporarily stop the first sprocket after the film has advanced at least 12 perforations. a shutter disposed in front of the aperture; and shutter drive means coupled to the shutter for selectively opening and closing the shutter to expose film when the first sprocket is stopped.

(11) A rotating means for simultaneously rotating the first and second sprockets to feed the film, and a stopping means coupled to the rotating means for stopping the first and second sprockets after the film has advanced at least 12 puffs. a shutter disposed in front of the aperture; and shutter drive means coupled to the shutter for selectively opening and closing the shutter to expose the film when the first and second sprockets are stopped. .

(12) A camera having a pressure plate and registration means coupled to the pressure plate and the shutter drive means for pressing the pressure plate against the film when the shutter is opened to force the film to the boundary of the aperture.

(13) A camera in which the registration means presses the film against the entire border of the aperture by means of a pressure plate.

(14) A camera in which the registration means includes means for separating the pressure plate from the film as the film is advanced.

(15) A camera in which the registration means includes pin extension means for extending the registration pin through a perforation in close contact with the aperture when the shutter is opened.

16. The method of claim 3, wherein the film is pressed onto the entire boundary of the aperture by a pressure plate.

(17) After film exposure, remove the pressure plate from the film,
A photographing method that then rotates the first and second sprockets to advance the film.

(18) A photographing method in which, when the shutter opens, a registration pin is extended to pass through a perforation placed in close contact with the aperture to fix the film in place.

19. The camera of claim 4, wherein the registration means presses the film to the entire boundary of the aperture by means of a pressure plate.

(20) A camera in which the registration means includes means for releasing the pressure plate from the film as the film is advanced.

(21) A camera in which the registration means extends a registration pin through a perforation closely disposed with the aperture when the shutter is opened.

(22) A rotatable shutter disposed in front of the aperture opening to allow light to pass through the aperture when it reaches a predetermined rotational position; and shutter rotation means coupled to the shutter for rotating the shutter. camera.

(23) A camera having a monitor and a shutter shaft connected to the motor and the shutter.

(24) A camera having a signal means disposed on the shutter shaft and outputting a signal when the shutter shaft reaches a predetermined position, and a film transport means feeding the film in response to the signal.

(25) A camera in which the aperture means has a removable aperture plate.

(26) A holding member disposed on one side of the aperture plate to hold the aperture plate in a fixed position, and a release member that comes into contact with the holding member to disengage the holding member from the aperture plate and remove the aperture plate. A camera having means.

(Effects of the Invention) As described above, according to the present invention, it is possible to provide a method and apparatus that can take a normal size image and a widescreen image on 35 mm film with one camera.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a movie camera according to the invention, FIG. 2 is a perspective view of a film transport mechanism according to the invention, and FIG. 3B is a sectional view showing the drive mechanism of the shutter assembly when the camera according to the invention is viewed in the direction of arrow 3B-3B in FIG. 1; FIG. 4 is a sectional view showing the film transport mechanism according to the invention. FIG. 5 is a partial cross-sectional view of a friction clasp assembly used in a camera according to the present invention, and FIGS. 6A and 6B are perspective views of a registration mechanism used in a camera according to the present invention. 28...Film, 91...Aperture, 82.9
4...24-tooth sprocket patent applicant Rod B. Sharp agent Patent attorney Hiroshi Suzuki FIG, 3B. 10 Q-FIG, JB. Procedural Amendments Hei I&, June 20, 1

Claims (5)

[Claims] (1) receiving a 35 mm film from a film supply and advancing the film along a film path through an aperture and a shutter for approximately 12 or more perforations; having a second length greater than the length of the film, the film is advanced parallel to and opposite the aperture, and the direction of the second length of the aperture is the same as the direction of the film path as the film passes through the aperture. A movie shooting method characterized by (2) an aperture having a first length less than or equal to the width of the film and a second length greater than the width of the film for exposing the film; Approximately 1 through the opening
a film transport means that advances by two perforations;
The film transport means is connected to the film transport means for advancing the film parallel to and facing the aperture opening, and for advancing the film parallel to and facing the aperture opening.
and guiding means for directing the length of the film in the direction of the film path as the film passes through the aperture opening. (3) receiving a film from a film supply and threading the film onto a first sprocket located on one side of an aperture, the aperture having a first length less than or equal to the width of the film and a second length greater than the width of the film; having a length, the first
a sprocket having teeth that engage perforations in the film, and threading the film onto a second sprocket located on the opposite side of the aperture, the second sprocket having teeth that engage perforations in the film; The first and second sprockets are rotated to advance the film approximately 12 perforations or more past the aperture and shutter, with the film facing parallel to the aperture such that the direction of the second length of the aperture is such that the film is aligned with the aperture. the same as the direction of the film path as it passes through, then temporarily stop the first and second sprockets, and when the first and second sprockets stop, press the pressure plate against the film to force the film through the aperture. A movie shooting method characterized by pressing the border and then opening the shutter to expose the film. (4) an aperture having a first length less than or equal to the width of the film and a second length longer than the width of the film for exposing the film; and a film disposed on one side of the aperture; a first sprocket having teeth that engage the perforations of the film; and a second sprocket disposed opposite the aperture that has teeth that engage the perforations of the film, the first and second sprockets comprising: the film is fed parallel to and opposite the aperture opening and positioned such that the direction of the second length of the aperture opening is the same as the direction of the film path from the first sprocket to the second sprocket; a rotating means connected to the first sprocket and rotating the first sprocket to advance the film approximately 12 perforations or more; a shutter disposed in front of the aperture; a shutter drive means in communication with the shutter for selectively opening and closing the shutter for film exposure when the first sprocket is stopped; a pressure plate; 35 mm, characterized in that it has a pressure plate and registration means coupled to the shutter drive means to press the pressure plate against the film when the shutter is opened to press the film against the boundary of the aperture.
A camera that captures widescreen images on film. (5) an aperture means having an aperture for exposing a frame of film; and film transport means for transporting the film along a film path toward and through the aperture; A multi-sized motion picture camera further comprising setting means for setting the amount by which the film advances through each frame, and transport means communicating with the setting means to advance the film by the selected amount.