Method of and apparatus for recording video signal associated with photographic image

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BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a method of and apparatus for recording a photographic image and, more particularly, to a method of and apparatus for producing a video signal in a television signal format, for example, by picking up a frame which stores a photographic image therein, to record the video signal in a recording medium.

2. Description of the Prior Art

There has been known an apparatus which picks up a photographic image, or picture, using an image pickup device which transforms it into a raster-scan type video signal such as a television (TV) signal, and, then, records the video signal in a recording medium, e.g. magnetic disc, magnetic tape or optical disc. The photographic image may be one of those stored in the frames of a negative or positive film, which may be colored or monochromatic, and those of prints, which may also be colored or monochromatic.

The stored video signal may be read out of such a recording medium to reproduce the image in the form of a soft copy on a video display such as a video monitor. Besides the soft copy, the video signal may be visualized in the form of a hard copy and is open to other various manners of later use.

Films storing photographic images and applicable to a video signal producing apparatus of the type described include a roll of long film and a circular disc of film. The roll type film is marketed in various standards, such as full and half sizes of JIS (Japanese Industrial Standard) 135 type films and 110 type films, each having specific frames recordable with a length-to-width dimensional ratio particular thereto. That is, the size of a frame differs from one type of film to another over a wide range. In the case of printed pictures, or prints, they may be accommodated in a single elongated carrier so as to be supplied to the apparatus as a so-called print album. Besides such a continuous supply mode, prints may be supplied in a discrete, frame-by-frame mode.

In any case, an image or picture of the kind described may be displayed on a video display such as a TV picture for viewing. A problem encountered here is due to the fact that an ordinary TV receiver or a like video display which is generally usable as a monitor has a screen which is longer horizontally than vertically. Specifically, the standard screen of such a display has a horizontal-to-vertical dimensional ratio of 4:3, whereas the size of a photographic picture differs over a wide range and, in addition, images in some frames may be oriented vertically and those in some other frames horizontally, depending upon the selected position of a camera at the time of shooting. Furthermore, with the 135 type, full size frames, for example, images may sometimes be exposed in one top-bottom orientation and sometimes in the other top-bottom orientation with respect to the lengthwise direction of the film, although all of them may be in vertical positions. Likewise, even horizontally positioned frames may differ in top-bottom orientation depending upon the kind of a camera used. Despite the variety of sizes and orientation situations, the pictures should always be displayed on the horizontally long screen of the display in a correct top-bottom orientation and in adequate dimensions without loosing essential portions thereof.

In the case where images stored in the frames in various orientations as described above are picked up to record the resulting video signals in a recording medium, it is desirable that a number of frames be recorded within the shortest possible time in a predetermined sequence. Assuming that the video signals produced from an elongated film are recorded in a magnetic disc, for example, it would be convenient for the video signals to be recorded in the order of the frames of the film with respect to the lengthwise direction in the consecutive tracks of the disc, considering convenient access to the tracks during playback. Although an image may be rotated and/or a magnification varied by some technique whenever a frame in an orientation different from the preceding one appears, such reorientation consumes a substantial period of time for switching associated mechanisms and various processings and, thereby, increases the whole operation time. Especially, when the inversion of the top-bottom orientation may be implemented by an optical system and/or image processing within a relatively short time, as compared to the time required for a change of magnification associated with the vertical/horizontal position which is relatively long.

SUMMARY OF THE INVENTION

It is therefore an object of the present invention to provide a method of and apparatus for recording within a minimum of time, a video signal which allows a picture to be always adequately displayed on a horizontally long screen of a video display.

In one aspect of the present invention, there is provided a method for recording photographic images by picking up a group of photographic images recorded in horizontal and vertical positions in substantially equally dimensioned frames, and storing in a storage medium video signals representative of the photographic images in the order of the group of photographic images. One of various frame orientations, which include at least the vertical and horizontal positions, of the photographic images recorded in the respective frames is selected. Then, those photographic images which are in the selected one orientation are selected out of the group of photographic images. Relative rotation of the photographic images with respect to the selected one orientation is set. For the images in the vertical position, a magnification for formation of a video signal which is smaller than a magnification for the images in the horizontal position is set. The selected photographic image is picked up to store the video signal representative of the image in a store position of the storage medium which is assigned to the image. The selection, pickup and storage are performed on all the photographic images which are in the selected one frame orientation. The selection, rotation setting, magnification setting, pickup, and storage are performed for each of the remaining frame orientations, whereby the above procedure is repeated for each desired frame orientation.

In another aspect of the present invention, there is provided an apparatus for recording a photographic image having image pickup means for picking up a group of photographic images which are stored in vertical and horizontal positions in a plurality of substantially equally dimensioned frames to form video signals representative of the photograhic images, and recording means for recording the video signals in a storage medium in the order of the group of photographic images. First setting means set the relative rotation of the photographic images according to the frame orientations of the photographic images recorded in the respective frames which include at least vertical and horizontal positions. Second setting means set, for the vertical images, a smaller magnification for formation of the video signal than a magnification for the horizontal images. Sensor means sense frame orientations of the respective photographic images in the group. Control means, which control the image pickup device, recording means, first and second setting means, and sensor means, select one of the frame orientations, identifies, using the sensor means, those photographic images which are in the selected one frame position out of the group of photographic images in the order of the photographic images in the group, causing the first setting means to relatively rotate the photographic images with respect to the selected one frame orientation, then sets, for the vertical images, a smaller magnification for formation of a video signal than a magnification for horizontal images by using the second setting means, causing the image pickup means to pick up the identified photographic image, which in turn causes the recording means to store the video signal representative of the photographic image in a store position of the storage medium which is assigned to the photographic image, causing the identification and pickup of the photographic image, and the storage of the video signal for all the photographic images which share the selected one frame orientation, and then causes the identification, rotation setting, magnification setting, pickup, and storage for each of the remaining frame orientations, whereby the above procedure is repeated for each desired frame orientation.

BRIEF DESCRIPTION OF THE DRAWINGS

The objects and features of the present invention will become apparent from a consideration of the following detailed description taken in conjunction with the accompanying drawings in which:

FIGS. 1A-1D are schematic diagrams useful for understanding the principles of the present invention;

FIGS. 2A and 2B, when combined as shown in FIG. 2, are a partial schematic block diagram of a video signal recording apparatus embodying the present invention;

FIG. 3 is a perspective external view of the apparatus in accordance with the present invention;

FIGS. 4A and 4B, when combined as shown in FIG. 4, are a functional block diagram of a control system and its associated elements included in the apparatus of FIG. 2;

FIGS. 5, 6 and 7 are plan views showing exemplary forms of photographic images which are applicable to the apparatus of the present invention;

FIG. 8 is a plan view showing a magnetic disc applicable to the apparatus shown in FIG. 2;

FIG. 9 is a schematic block diagram showing details of the record control and its associated elements shown in FIG. 2;

FIGS. 10A, 10B, 11A, 11B and 12A, 12B, when combined as shown in FIGS. 10, 11 and 12, respectively, are partial schematic block diagrams showing alternative embodiments of the present invention; and

FIGS. 13A and 13B, when combined as shown in FIG. 13, show operational flows executed by the control system included in the embodiments shown in FIGS. 2A, 2B, 10A, 10B, 11A, 11B, and 12A, 12B for recording video signals associated with photographic images in accordance with the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1A-1D of the drawings, a dotted line 10 represents an effective picture area of a video display in which a video signal representative of a picture in a standard TV signal format is reproducible. The standard vertical-to-horizontal dimensional ratio of the effective picture area is 3:4. Solid lines 12a, 12b, 12c and 12d each show exposed frames of a film which, in this example, is assumed to be a JIS 135 type, full-size film, the vertical-to-horizontal ratio of each frame being 2:3.

In FIG. 1A, the horizontal width of the frame 12a which is horizontally positioned is substantially equal to that of the effective picture area 10 and the frame 12a is entirely included within the area 10. Only narrow regions 14 indicated by leftwardly upward hatching remain blank with no video information appearing therein.

In FIG. 1B, the height of the frame 12b which is in a horizontal position is substantially equal to that of the effective picture area 10, so that those narrow portions 16 of the picture which are indicated by rightwardly upward hatching are omitted without being displayed. Nevertheless, since the finder of a camera has a field which is usually designed with a substantial margin for safety purpose, it is improbable that such an amount of omission would lead to loss of an essential part of the picture. Assuming that the magnification of the image in FIG. 1A is "1", the magnification in FIG. 1B is about 1.14 times that of FIG. 1A.

In FIG. 1C, the height of the frame 12c which is vertically positioned is substantially equal to that of the effective picture area 10, the whole frame 22c being included in the area 10. Therefore, only the regions 14 of the area 10, indicated by leftwardly upward hatching, remain blank; the total area of the regions 14 is 50% of the area 10. The magnification in FIG. 1C is about 0.74 times that of FIG. 1A.

Where the vertical frame 12d is displayed with the same magnification as that of FIG. 1A, as shown in FIG. 1D, those portions 16 of the frame 12d indicated by rightwardly upward hatching are omitted while the regions 14 of the effective picture area 10 indicated by leftwardly upward hatching remain blank. The omitted area of the frame 12d amounts to about 25% of the total frame area, and the blank region 14 is about 33% of the area 10. The result is the omission of about one fourth of the total video information which is carried by the picture and loosing a substantial proportion of the essential video information, which is of course undesirable.

In accordance with the illustrative embodiment, a horizontal picture is converted into a video signal as shown in FIG. 1A or 1B. A vertical picture, on the other hand, is processed as indicated by the solid line 12c in FIG. 1C or similarly thereto as indicated by a dash-and-dot line 12e, i.e., a condition which allows little of the essential portion of the picture to be lost. A vertical picture is, therefore, picked up in a magnification smaller than that of a horizontal picture. It will thus be understood that the ratio of the area of the omitted regions 16 to the total area of the frame 12 should acceptably be about 25% or less, preferably about 20% or less, and optimally substantially 0%.

Referring to FIGS. 2A and 2B, the apparatus of the present invention includes an optical system, generally indicated by reference numeral 100, which extends from a light source 104 driven by a lamp power source 102 to a video camera head 106. Arranged sequentially on the optical axis 120 are an ND filter 108, a light integrator 110, a color compensation filter 112, a lens deck 114, and an optical shutter 116.

The ND filter 108 is an optical wedge filter whose optical density steplessly changes and is driven by a filter motor 118 in a plane perpependicular to the optical axis 120 to move into and out of the optical axis 120, thereby changing the illumination of light passing therethrough. The filter 112, on the other hand, serves as a color compensation filter for removing orange color when a negative film applied with an orange mask is used with the apparatus, as will be described. When required, the filter 112 is driven by a filter motor 126 into the optical axis 120 in a plane perpendicular to the optical axis 120.

A visual-image recording material 124, such as film or print, supported by a carrier 122 is located in a predetermined position between the filter 112 and the lens deck 114 as illustrated, so that any desired frame of the recorded material 124 may be illuminated by an illumination system. The recorded material 124 may be film supplied in any desired configuration such as in a roll or a disc. Negative roll type film or positive roll type film may be used whether it be color or monochromatic, in any possible standard such as the JIS 135 type full- or half-size, or the 110 type. If recording material 124 comprises a transparent type film, the illumination system is arranged so that the illuminating rays emitted therefrom pass the film into the lens deck 114. If a print is used as the recording material 124, then the illumination system is so disposed as to direct the rays emanating therefrom to the print, with the reflected rays passing into the lens deck 114.

The frame of the image-carrying material 124, to be picked up, is fixed in place in a predetermined pick-up station by pressing members 128, which are actuated by a solenoid 130. A photometric element 132 is responsive to the illumination of the frame.

As shown in FIG. 5, the film 124a used as an image-carrying material 124 in the illustrative embodiment may comprise a 135 type film which was exposed in a full-size. In FIG. 5, the film 124a is formed with notches 20, 22, 24 and so on at opposite edges 26 and 28 thereof. Specifically, a notch 20 having a predetermined shape is formed at one edge 26 of the film 124a in alignment with a frame 12f which was exposed horizontally in a given top-bottom orientation with respect to a predetermined longitudinal direction, e.g. a direction indicated by an arrow F. A notch 22 having another shape is formed at the other edge 28 in alignment with a frame 12g which was exposed in a vertical position in a given top-bottom orientation, and a notch 24 different in shape from the notch 11 is formed at the edge 28 in alignment with a frame 12h which was exposed in a vertical position but in the opposite top-bottom orientation to the frame 12g. Likewise, a notch, not shown, having a predetermined shape different from that of the notch 20 is associated with a frame (not shown) which was exposed in a horizontal position but in the opposite top-bottom orientation to the frame 12f.

The position and shape of the notches, for example the notch 20, is sensed by a film sensor 134 so that a particular orientation of an image in a frame such as the frame 12f is identified. Naturally, the identification of a frame orientation may be implemented by a number of notches, instead of the shape.

The lens deck 114 accommodates therein an image rotating mirror box 136 and, in this particular embodiment, two lens systems 138 and 140. As shown, an image rotating mirror box 136 is provided with three mirrors 144, 146 and 148 and driven by an image rotating motor 142 over an angular range of more than 270 degrees about the optical axis 120 relative to the deck 114. This allows an image in a frame of the film 124 to become incident to the camera head 106 in a position rotated within the range of at least 270 degrees.

In the illustrative embodiment, the lens systems 138 and 140 are selectively driven by a lens motor 150 into alignment with the optical axis 120 depending upon the size of the film 124a. For example, where the film 124a is of the 135 type, the lens system 138 will be selected and, where it is of the 110 type or the disc type, the lens system 140 will be selected.

The lens deck 114 is mounted on a housing of the apparatus in such a manner as to be movable in a direction parallel to the optical axis 120. The moving of the lens deck 114 is effected by a lens deck motor 152 which may advantageously be implemented by a stepping motor.

The camera head 106 comprises a TV camera which picks up an image from a frame of the film 124a through the lens deck 114. The TV camera may advantageously be implemented using an imaging tube or a solid-state imaging device which delivers an R (red), G (green) and B (blue) or like color separation video signal to an output 151. The camera head 106, like the lens deck 114, is mounted on the housing of the apparatus to be movable in a direction parallel to the optical axis 120 and so driven by a camera head motor 154, which may also be implemented by a stepping motor. An optical shutter 116 located on the optical axis 120 and in front of the head 108 prevents intense light issuing from the light source 104 from constantly entering an image pickup section of the head 106.

The lens deck motor 152 and the camera head motor 154 are commonly driven by a motor control circuit 156. The motor control circuit 156 comprises stepping motor drive amplifiers and a pulse counter circuit and, as will be described, drives the motors 152 and 154 each by a desired number of pulses as instructed by a central processing unit (CPU) 160, thereby moving the deck 114 and the camera head 106 up and down. In FIGS. 2A and 2B, circuitry for sensing return positions of the head 106 and deck 114 and rotation angles of the motors 154 and 152 so as to feed them back to the motor drive 156 is not shown for simplicity.

The motor driver 156 and the various output units such as the shutter 116, a lens motor 150, an image rotation motor 142, a pressing solenoid 130, and filter motors 126 and 118 are controlled by the CPU 160. The motor driver 156 is directly connected to a system bus 158 which in turn is connected to the CPU 160, while the various output devices are connected to the system bus 158 via drive amplifiers 162-172, respectively. In the event of movement of the orange mask filter 112 driven by the filter motor 126 or that of the ND filter 108 driven by the filter motor 118, the rotation angle of the motor and the position of the associated filter are sensed and fed back to a control system 180, although this circuitry is not shown for simplicity.

Now, as shown in FIG. 6, the film 124a supplied to the apparatus may even be in a configuration which is made up of a plurality of lengths of film, each having a plurality of exposed frames 12 and interconnected with the others by tapes 30, to provide a long continuous roll. Such a film, in accordance with the preferred embodiment, is fed by a film feed mechanism 226 (see FIG. 9) which in turn is driven by a film motor 174 on the film carrier 122. The film motor 174 is connected to the bus 158 via a drive amplifier 176 which is controlled by the CPU 160.

As shown in FIG. 9, the frame position of the film 124a, fed by the mechanism 226, is sensed by a film position sensor 228 and fed back to the control system 180. The film position sensor 228 may sense a frame position in terms of a rotation angle of the film feed motor 174 and a return position of the film 124, or by counting the indications 20 and the like by means of the sensor 134.

As previously discussed, elongated films are available in JIS 135 type and 110 type. Each of the JIS 135 type and 110 type films is marketed as color and monochromatic films, and the color films are marketed as reversal type and negative type films. Further, the 135 type film may be selectively exposed in half-size and full-size. In this particular embodiment, as shown in FIG. 6, the kind and size of the film 124a are represented by a punched hole or holes 32 which are formed through the tapes 30. The holes 32, like the notches, such as the notch 22, are sensed by the sensor 134, the output of which is routed to the bus 158 via a read amplifier 178.

The brightness of the frame of the film 124a aligned with the optical axis 120 is sensed by the photometric element 132 whose output is applied to the bus 158 via a read amplifier 182.

The apparatus of the present invention is controlled by the control system 180 which includes the CPU 160. As shown, the control system 180 comprises a storage 184 for storing various data and programs, and input devices, such as a keyboard 186 and a paper tape reader 188, for entering the operator's instructions and data. These are interconnected by the system bus 158. The paper tape reader 188 is an optional unit adapted to read a paper tape punched with color compensation data and other information beforehand, simultaneously with the feed of the film 124a. In an alternative embodiment, data indicative of the frame orientation of image-carrying material 124 may be punched on a paper tape 189, which is read by tape reader 188 in synchronism with the feeding of image-carrying material 124. The data thus read is in turn stored in the storage 184 under the control of the CPU 160. In place of, or in addition to, the paper tape 189, other types of recording media, such as a magnetic tape, may advantageously be applicable to the system.

The video signal produced by the camera head 106 propagates over the output line 151 via a switch 190 to a video circuit system 200. The switch 190 serves to route the video signal to a color compensation circuit 192 either directly or by way of a negative-to-positive (NP) inversion circuit 194. The switch 190 is connected to the bus 158 via a drive amplifier 196.

The NP inversion circuit 194, when the film 124 on the carrier 122 is a negative, operates to invert the illumination level of the video signal so as to convert the negative picture to positive one. A function of the color compensation circuit 192 is to compensate for pictures in the frames of the film 124a, which possibly were shot under various exposures and/or illumination conditions different from standard ones, to gradations which are as close to standard ones as possible, thereby generating a video signal capable of reproducing an image that appears natural to the eyes or analogous in color to a particular cameraman's intention. The output of the circuit 192 is applied to a record circuit 198.

Many of photographic images applicable to the apparatus of the present invention are recorded under varying shooting conditions. In particular, the shooting conditions under which negatives are exposed by amateurs will considerably vary film by film or even frame by frame. It is desirable to generate video signals with optical density (gradation) and colors of an image compensated to standard or substantially standard ones even when such films were exposed under widely varying conditions. The color compensation circuit 192 fulfills this role of compensating the video signals representative of such photographic images with respect to colors.

When a video signal with compensated density and colors is reproduced on a video monitor, the picture will appear almost natural to the eyes or with a special effect approximate to one which was intended by the cameraman. If video signals undergoing such compensation are stored in a storage medium and the medium is supplied to a user, it is possible for the user to reproduce the picture with the appearance of substantially natural conditions or specific intended conditions.

The record circuit 198 modulates the input video signal in frequency modulation (FM) or any other suitable modulation system, and applies the modulated signal to a magnetic head 208. An instruction for recording a video signal is delivered from the bus 158 to a signal line 220. The output of the record circuit 198 is also applied to a video monitor 212 such as a cathode ray tube (CRT).

In the illustrated apparatus, a magnetic disc 201 is detachably mounted on an output shaft 204 of a motor 202 so that the video signal applied from the record circuit 198 to the magnetic head 208 is selectively written into a plurality of tracks 206 of the disc 201. The motor 202 is powered by a power source 210 to rotate at a predetermined constant speed.

The head 208 is supported by a transport mechanism which is driven by a drive amplifier 214, as schematically indicated by a dotted arrow 211, thereby being movable in the radial direction of the disc 200 as instructed by the CPU 160. This allows the head 208 to select any of the tracks 206 for recording the video signal therein. A position of the head 208 is detected by a head position sensor 224 in terms of a rotation angle of its associated motor and a return position of the head and, then, fed back to the control system 180. In addition to the detection of a rotation angle of the motor associated with the feed mechanism 211 and a return position of the head 208, the head position sensor 224 may detect an envelope of an output of the head 208, i.e. envelope tracking, as an auxiliary technique for the identification of a head position.

The apparatus of the present invention may be provided with such an appearance as one shown in FIG. 3 by way of example. The apparatus comprises a desk-like housing 300. Arranged on the top 320 of the housing 300 are a keyboard 302 for entering color compensation instructions, a keyboard 304 for entering the kinds and sizes of films, orientations of frames as well as record instructions and the like, a monitor device 212, etc. The keyboards 302 and 304, in combination, constitute the keyboard 186 shown in FIG. 2B.

When the optical system 100 is loaded with the film or print 124, which carries no data, in the form of notches 20 and 22 as shown in FIG. 5, on vertical-horizontal orientation, top-bottom orientation, optical density, color correction and the like of a picture recorded thereon, the keyboards constituting keyboard 186 may be used for entering such data by the user who watches the picture shown on the monitor display 212, rather than by means of punched tape 189 or notches 20 and 22.

A recording material mount section 312 inclusive of the film carrier 122, pressing elements 128 and sensor 134 is rotatable about the optical axis 120 relative to the housing top 320. As indicated by dash-and-dots line in FIG. 3, the film 124a played out from a reel or the like is fed over the mount section 312 by the film motor 174. Here, the direction indicated by an arrow F is the forward direction.

A lower section 306 of the housing 300 accommodates the optical system 100 inclusive of the light source 104 and light integrator 110 and its associated elements, while another lower portion 308 accommodates electronic circuitries inclusive of the control system 180. Still another lower portion 310 accommodates a recording arrangement inclusive of a deck for the magnetic disc 201.

A photometric section 314 accommodating the photometric element 132 therein is disposed above the mount section 312. Disposed above the section 314 is the lens deck 114 and the camera head 106 which are supported by a column 322 to be movable up and down independently of each other. A second housing 320 is mounted on the desk top 320 and houses the video circuit system 200 therein.

The operation of the apparatus in accordance with the present invention will be described with reference to FIGS. 4A and 4B which are a schematic functional block diagram of the control system 180 and its associated elements. The drawing mainly shows the functions of the control system 180 and designates those blocks which clearly correspond to the structural elements of FIG. 2 by the same reference numerals.

When the film 124a is laid on the film carrier 122 of the mount section 312, an image pickup control 400 in the CPU 160 senses the punched hole or holes 32 of the connecting tape 30 using the sensor 134 to determine a kind and size of the film 124a. The operator manipulates the keyboard 186 to input the position of a frame of the film 124 to be recorded in the disc 201, selection data associated with the tracks 206, and other data according to requirements (406).

Then, as the operator enters an instruction for opening the shutter 116 via the keyboard 186, the image pickup control 400 opens the shutter 116 to display a picture recorded in the specific frame on the video monitor 212. The operator is now allowed to operate the keyboard 186 while watching the monitor 212 in order to specify a particular frame which should be stored in the disc 201. Before such operator's manipulation, the image pickup control 400 moves the camera head 106 and lens deck 114 so that a picture in a frame will be picked up in a correct state.

A record control 404 performs film feed 174 based on the input data until the desired specific frame is brought to the image pickup station. At this instant, the image pickup control 400 reads the notches 20 and the like formed at the edges 26 and 28 of the film 124a by means of the sensor 134, thereby identifying an orientation of a frame 12 located on the optical axis 120 (406). Further, the record control 404 drives the head transport mechanism 211 to select empty ones of the tracks 206 for recording a video signal (214).

The storage 184 stores a conversion table 408 for the selection of the lens system 138 or 140 which depends upon the kind and size of the film 124a, and that of a distance or relative position between the camera head 106 and the lens deck 114 in the direction of the optical axis 120 in correspondence with the frame orientation and with a predetermined image pickup position of the film 124a on the film carrier 122 which is employed as a reference, or magnification previously discussed. FIGS. 4A and 4B schematically show the condition wherein conversion tables 408 are assigned in one-to-one correspondence to the kinds and the sizes of films 124a and stored in the storage 184.

For example, in the case of a JIS 135 type full-size film, predetermined data are stored employing the positions of the lens deck 114 and camera head 106 associated with the horizontal frame 12a shown in FIG. 1A as a standard; for the vertical frame 12c, positions of the lens deck 114 and camera head 106 which set up a magnification which is 0.74 times the magnification of the horizontal frame 12a are stored in the conversion table 408.

Concerning a JIS 135 type half-size film, assume that the positions of the lens deck 114 and camera head 106 associated with the horizontal frame 12a shown in FIG. 1A is the standard. Then, the whole horizontal frame will be picked up in the effective picture area 10 if the lens deck 114 and the camera head 106 are positioned to provide a magnification which is about 1.51 times the standard; a vertical frame will be picked up in a condition similar to that of FIG. 1C if they are positioned to provide a magnification which is about 1.14 times the standard. This data is stored in the conversion table 408.

Likewise, for a 110 type film, the lens deck 114 and camera head 106 will be positioned such that a horizontal frame shown in FIG. 1A is picked up in a size about 2.09 times the standard position data and a vertical frame, in a size about 1.6 times the same, so that an image in the frame is picked up in a state similar to that of FIG. 1C. This data is stored in the conversion table 408.

Further, as for the disc film, if the lens deck 114 and camera head 106 are positioned such that a horizontal frame shown in FIG. 1A is picked up in a size about 3.34 times the above-mentioned standard position data and a vertical frame, in a size about 2.57 times, they will be picked up in a condition similar to that of FIG. 1C and the data will be stored in the conversion table 408.

Naturally, the data described above is only illustrative and does not limit the present invention. That is, any other kind of data may be used to allow frames to be picked up in the condition of FIG. 1B or one indicated by the dash-and-dot line 12e in FIG. 1C or in any of their intermediate conditions. For example, three different conversion tables 408 may be assigned respec