Abstract: In an exposure precision tester for a camera, including a flexible wiring board where a photometric sensor is implemented is contained in a case. The case has an appearance similar to that of a film cartridge loaded by drop-in operation and is insertable into a film cartridge cell of the camera. Exposure test can be performed without a back lid because the photometric sensor measures and outputs the exposure energy in the state that the photometric sensor is positioned at a film mask portion by rotating an operation part of a feed shaft with the case being inserted in the camera.

Abstract: In a camera using a cartridge (1) which includes flexible flanges (5), (6) having loose film wind preventive annular juts and being formed at both ends of a spool (3) in the cartridge, and in which pressing forces operate on film in a width direction of the film due to the juts of the flanges, curl leveling forces to be applied to deformed portions of the film caused by the pressing forces are reduced by means of concave surfaces (9c), (9e) formed at given locations on rail planes (9a) and feed walls (9d) constituting a film feed path, and good film flatness is thus ensured.

Abstract: A camera which allows a film cartridge to be loaded in the direction of the axis of rotation of the film cartridge or in the direction approximately perpendicular to the axis of rotation, includes a camera body includes a film cartridge compartment for accommodating the film cartridge, a film take-up spool compartment for taking up a film and a film transport path, formed between both compartments, having a film frame aperture, and a shading cover, when assembled to the camera body, for shading the film cartridge compartment, the film take-up spool compartment, and the film transport path.

Abstract: A camera using a photographic film accommodated in a cartridge main body in the state that a cartridge is loaded into the camera, the film being pressed, when it is fed out to the outside of the cartridge, by being subjected to a load in a film width direction substantially at a given position in the cartridge, wherein the position of the cartridge is set with respect to the position of the photographing opening of the camera so that the portions of the photographic film subjected to the load in the cartridge are located in the vicinity of the interval between photographing frame of the film fed out. According to the above arrangement of the camera, even if the fed photographing film is subjected to the load, it can maintain good flatness at the portion thereof corresponding to the photographing opening and an out of focus condition due to increased film curvature can be prevented.

Abstract: A camera capable of recording information uses a film cartridge that includes a spool for rolling a film that includes a data recording portion. A pair of elastic flanges having annular lips peripheries thereon are provided on the spool for nipping successive convolution of the film. The film is propelled out of the cartridge by rotating the spool in a predetermined direction. The camera further comprises a feeding member for winding the film fully when the cartridge is loaded into the camera and rewinding the film into the cartridge in response to the completion of a film exposure. A recording means is also provided in the camera. The rewinding means serially records the information onto the recording portion of the film when the film is rewinding.

Abstract: A lens assembly includes a third lens group frame having an end face extending in an optical-axis direction and provided with an end-face cam having displacement along a peripheral direction, for retaining a third group of lenses, a second lens group frame having a cam follower abutted against the end-face cam for retaining a second group of lenses, a second lens group spring for biasing the second lens group frame toward the third lens group frame, rotational regulator for regulating rotation of one of the third lens group frame and the second lens group frame around an optical axis, and a rotator for rotating the other of the third lens group frame and the second lens group frame around an optical axis when zoom operation is performed, wherein the end-face cam and a cam follower are operated by relative angular movement of the third lens group frame and the second lens group frame, around the optical axis at the time the zoom operation is performed to modify spacing therebetween in the optical-axis directio

Abstract: A camera for setting the aspect ratio of a photographic image plane and recording information of the set aspect ratio has a full-size frame defining a full-size finder image plane corresponding to a photographing image plane, a vertical mask for vertical trimming of the finder image plane, a lateral mask for lateral trimming of the finder image plane, a shaft supporting the masks, and a camshaft with a cam groove engaged by each of the masks. The masks are moved along the shaft by rotating the camshaft. The visual field range of the finder image plane is changed among a plurality of states corresponding to different aspect ratios.

Abstract: A camera having: a viewfinder optical system including a stationary objective lens, first and second prisms, a stationary eyepiece lens, and first and second variable-power lenses, that advance or withdraw in the optical-axis direction responsive to zooming movement of a photographing lens array, a viewfinder structure member for retaining the viewfinder optical system, an eyepiece variable-power lens inserted into the optical path of the viewfinder optical system, a viewfinder panoramic field mask united with an eyepiece variable-power lens frame for retaining the eyepiece variable-power lens, a lens constraining spring that, when the viewfinder panoramic field mask is inserted into the optical path of the viewfinder optical system, constrains the eyepiece variable-power lens to abut against the viewfinder structure member for accurate positioning, upper and lower interceptive masks for changing picture size, a first rack extending in a direction in which the interceptive masks move, a second rack extending

Abstract: In a camera using a film cartridge that holds a film with a load exerted on the film in the direction of the width of the film, a time counting block for time counting at each predetermined action of the camera, a time information memory block for storing the time from the time counting block, a film feed condition determining block for determining the condition of film feed, a time information determining block for computing a film hold time based on the latest time counted by the time counting block and the time stored in the time information memory block, and a camera setting update block for updating the camera setting according to the hold time to compensate for film curling.

Abstract: A film feeding apparatus of a camera moves a film when the camera is switched to its nonoperative state or has not been operated for a predetermined time, in order that focusing is not affected by film deformation caused by a pair of flanges of the film cartridge when the film has been left for a long time. A film feeding motor feeds the film, and a perforation detector or a film encoder outputs a signal corresponding to the feeding amount of the film. When the camera is switched to its nonoperative state or has not been operated for the predetermined time, a CPU in response to the film feeding amount signal causes the film to be moved by a predetermined amount in a first direction. Further, when the camera is switched to its operative state or an operation command is inputted, the CPU causes the film to be moved in a second direction opposite to the first direction.

Abstract: A camera having: a substantially cylindrical-shaped, rotatable cam, limited to rotate unidirectionally. A drive belt conveys rotation of the rotary member, which rotates due to zooming of lens array, to drive the cam. A viewfinder optical system including a stationary objective lens, two prisms, a stationary eyepiece lens, and two variable-power lenses, when coupled with the cam member, advances or withdraws along the optical-axis during movement. An eyepiece variable-power lens is inserted into the optical path of the viewfinder optical system. A viewfinder panoramic field mask is united with an eyepiece variable-power lens. Upper and lower masks change picture size. A first rack extends in a moving direction of the masks. A second rack extends in a moving direction of the viewfinder panoramic field mask. A panoramic-mode setting gear engages the two racks. A plurality of panoramic-mode parallax compensation marks appear at a trimmed range position within the viewfinder field mask.

Abstract: A lens assembly includes a third lens group frame having an end face extending in an optical-axis direction provided with an end-face cam having displacement along a peripheral direction, for retaining a third group of lenses, a second lens group frame having a cam follower abutted against the end-face cam for retaining a second group of lenses, a second lens group spring for biasing the second lens group frame toward the third lens group frame, a rotational regulating for regulator rotation of one of the third lens group frame and the second lens group frame around an optical axis, and rotator for rotating the other of the third lens group frame and the second lens group frame around an optical axis when zoom operation is performed, wherein the end-face cam and a cam follower are operated by relative angular movement of the third lens group frame and the second lens group frame, around the optical axis at the time the zoom operation is performed to modify spacing therebetween in the optical-axis direction.

Abstract: A camera having a structure in which a colorimetric value is not influenced by the color tone of a main object to be photographed. The camera, in which a film having a data recording section can be loaded, comprises three light receiving portions differing in spectral sensitivity. Based on the output from the three light receiving portions, a colorimetric section measures a color tone of light surrounding the object to be photographed. The light receiving portions are arranged on a front portion of the camera and are arranged so as to receive light at a range larger than an angle of a photographed view. Based on the output of the colorimetric portion, a color correction amount determining portion determines a color correction amount during a printing operation. The data as to the color correction amount is recorded on the data recording section of the film by a recording unit.

Abstract: A camera includes a body drive motor for driving forwardly or backwardly, a first planetary gear mechanism for selecting whether the output from the motor should be transmitted to a zooming device, a prohibition device for prohibiting the rotation of the planetary gear mechanism after the first planetary gear mechanism has completed the selection, a second planetary gear mechanism for selecting whether the output from the first planetary gear mechanism, which was not transmitted to the zooming device, should be transmitted to a winding device, and a third planetary gear mechanism for transmitting the output from the second planetary gear mechanism, which was not transmitted to the winding device, should be transmitted to either the rewinding device or a photographic image-plane size switching device.

Abstract: A film feeding amount detection apparatus of a camera includes a roller device which rotates in a driven manner with respect to the movement of a film, a reflecting device which shares the use of the rotation shaft with the roller device and which is formed into a polygonal pillar shape such that a plurality of reflecting surfaces are formed on the outer periphery of the rotation shaft, and a light projection and receiving device, which is disposed at a position facing the reflecting surfaces formed on the reflecting device, for projecting light to the reflecting surface portion and receiving light reflected back therefrom.

Abstract: A film cartridge in which a supply spool incorporated in a cartridge body is rotated to supply a film wound on the supply spool out of the cartridge body. A film supply unit rotates the supply spool to supply the film out of the film cartridge. A first control unit controls the film supply unit such that a supply operation of the film is started in response to a closing operation of the rear cover of a camera body. A film take-up unit takes up the film supplied by the film supply unit. A second control unit controls the film take-up unit to operate the film take-up unit upon completion of the supply operation of the film performed by the film supply unit. A third control unit interrupts a take-up operation of the film performed by the film take-up unit and reoperates the film supply unit when the take-up operation of the film is impossible during the take-up operation of the film performed by the film take-up unit.

Abstract: A photographic camera capable of switching the size of a photographic image includes a photographic image size information display device for displaying information on the size of a photographed image on a tongue portion of the film and/or a film cartridge in which the film is loaded. The photographic image size information display device includes a device for printing a printing type in accordance with the photographic image size, and a marking device for making a mark using a laser. Information on the photographic image size can be displayed automatically by this camera using these devices. As a result, no special inconvenience is given to a photographer, and the photographic image size can be reliably recognized in a processing laboratory.

Abstract: A camera system incorporating a camera and a conversion lens detachable with respect to the camera and acting to change the focal point distance of a photographing lens, the camera system including: an electric drive device for driving the photographing lens; a setting device for operating the electric drive device to set a focus range to a desired value; a mounting signal generating device for automatically or manually transmitting a signal denoting that the conversion lens has been mounted on the photographing lens; and a control device for operating the electric drive device in accordance with an output from the setting device and for forcibly operating the electric drive device until the focus range is made to be a proper distance if the set focus range is not a proper distance for performing a photographing operation by using the conversion lens when the control device receives an output from the mounting signal generating device.

Abstract: A camera comprises a camera body in which an opening is mounted for determining a photographing bundle of ray and for forming a photographing picture, and a patrone containing chamber is located sidewardly adjacent to the opening and is used for containing a patrone to be used for the camera. In the camera, a sprocket is located behind an imaginary plane including the opening of the camera body and is used for feeding a film, which is exposed by the photographing bundle of ray passing through the opening, toward the backside of the imaginary plane, and a spool located behind the opening and the sprocket and takes up the film, fed toward the backside by the sprocket, with a photographic-emulsion coating surface thereof being located radially inside on the spool.

Abstract: A camera having a projecting portion disposed at the rear of an aperture portion for forming an image to be photographed on a film and a grip portion formed on the right side of a lens barrel, the left-hand portion of the projecting portion forming a substantially flat surface together with the outer surface of the lens barrel. The camera thus constituted can be significantly easily used because the grip portion can be easily held, the right arm is not easily separated from the body causing camera shake to be prevented at the time of the photographing operation, the fingers of the photographer do not touch the face and do not obstruct the operation when the photographer places his eye next to the viewfinder and observes the finder and the left-hand wrist does not come in contact with the edge of the camera when the left hand is placed on the outer surface of the lens barrel.