Abstract: A control method applied to a photographing apparatus that includes a lens, an external device, and a body communicatively connected to the lens and the external device. The control method includes the body sending a shutter opening command to the lens; the lens sending a trigger signal to the body according to the shutter opening command, the trigger signal including a first pulse and a second pulse; and the body receiving the trigger signal sent from the lens, triggering a resetting operation of an image sensor inside the body according to the first pulse and triggering activation of the external device according to the second pulse.

Abstract: An adjustment device, a photographing assembly and a photographing device are provided in the present disclosure. The photographing device includes an underframe, a cover plate, and a photographing assembly installed between the underframe and the cover plate. The photographing assembly includes a photosensitive element and an adjustment device configured to adjust a position of the photosensitive element. The adjustment device includes plates and displacement adjusters. A support plate includes a frame body, an adjustment part in the frame body, and an elastic part for connecting the frame body with the adjustment part. A spacing is between the adjustment part and the frame body, and the adjustment part is able to move relative to the frame body. A displacement adjuster is abutted against the adjustment part and configured to overcome an elastic force of the elastic part to adjust a relative position between the adjustment part and the frame body.

Abstract: The invention relates to a camera body (CB) for still photography that comprises attachment facilities for a number of different accessories (ACC), which camera body further comprises a control unit for controlling functions in the camera body and in accessories attached to the camera body. The control unit communicates with the various accessories via a data bus, and, for at least one of the attachment facilities for accessories, in addition to the data bus, the camera body comprises separate means for communication (1, 2, 3, 4, 5) for detecting accessories that are attached or removed, which means for communication can also be used by the control unit in the camera body to initiate a change in the system status of an attached accessory. The invention also relates to an accessory for such a camera body.

Abstract: Apparatus is disclosed for cyclic displacement of a camera shutter mechanism or the like between first and second end positions comprising an electromagnet displacing the shutter mechanism, the electromagnet comprising a pivotable armature pivotable between first and second positions, a plurality of blades, a rocker arm connected to the armature, a linkage connecting the rocker arm to the blades whereby pivoting of the armature can be translated into rotary movement of the blades, a biasing spring for biasing the armature towards a neutral position between the first and second end positions, a driver for ensuring that the armature reaches the first and second end positions, the driver comprising a permanent magnet for holding the armature in either of the first and second end positions and counteracting the biasing spring, and at least one coil for exerting a force on the armature upon activation of the coil, the force being sufficient to overcome the permanent magnet and the biasing spring.

Abstract: A photographic device such as a camera having a camera body with a first side having a lens mounting device and a second side having a mounting device arranged to mount a film cassette or a rear camera body cover. The second side is located opposite to the first side. The rear camera body cover is attachable to the cover mounting device of the camera body and the cover has an inner side facing the camera body and an outer side opposite to the inner side. The film cassette is attachable to the cover mounting device of the camera body when the rear camera body cover is detached from the cover mounting device. The film cassette is arranged to carry a roll of film and to keep a film frame of the film in a flat state facing the camera body. The device further has an interchangeable lens and an extendable lens hood. The cover further has at least one opening arranged in a location corresponding to one corner or side of the film frame.

Abstract: A device and a method for facilitating the focusing of a camera during a so-called tilt operation, in which an image plane/focusing plane of a camera is angled relative the optical axis of an objective lens or vice versa, in order to obtain an inclined plane of focus, the camera being provided with a focusing screen located in said image plane/focusing plane and an optical viewing location, the optical axis which coincides with the optical axis of said focusing screen, said tilt operation resulting in the exiting light from the focusing screen being directed away from said viewing location, wherein an optical wedge is located between said focusing screen and said viewing location in such a way as to redirect the exiting light to said viewing location at which an eyepiece or an observer's eye is located. In a preferred embodiment, said optical wedge is a fresnel prism plate located adjacent to said focusing screen on the side of the exiting light.

Abstract: A camera is provided with means for effecting cyclic displacement of a mechanical system, such as a mirror mechanism (1) or shutter mechanism, between two end positions. The means include spring means (3) for biasing the system towards a neutral position or zone between the two end positions and drive means (5) for ensuring that the system sequentially reaches said end positions.

Abstract: A reference marking device for image transmitters includes a transmitter (FIG. 1) and a receiver (FIG. 3). The transmitter includes a scanner, which optically scans an image, and generates an image signal corresponding to the content of the image. The receiver receives the image signal and records the received image signal on an image base as a reproduction of the scanned image. The image base is provided with reference marks for registration of a series of separate, associated image reproductions, obtained preferably by means of color separation of the scanned image. The transmitter additionally generates and transmits reference signals. A reproduction device, included in the receiver, registers said reference marks in correspondence with the reference signals.

Abstract: To alter the brightness of selected portions of an image a representation of the image is presented on a display and is stored in a memory. The image representation is divided into a number of fields. A user may select an arbitrary one of the fields and indicate a desired change in its brightness, as presented on the display, by means of a field selector and correction keys. Each such change is also registered as a change in values stored in a corresponding region of the memory. Using interpolation, a control unit automatically modifies the brightness level of non-central portions of the selected image field, and of image fields adjacent to it, in order to eliminate sharp and obvious transitions in brightness at the borders of the respective fields.

Abstract: A device for long-distance transmission of images includes a transmitter and a receiver, connected by a communications line. The transmitter contains a device which scans a picture in a linear pattern to form an electric signal modulated to represent the brightness of the picture in picture points along the scanned lines. The receiver has a picture reproduction device and a driver for moving the reproduction device relative to a picture-supporting surface in a linear pattern corresponding to the linear scanning pattern of the transmitter. Upon receiving this signal the picture points are reproduced line by line with a brightness which corresponds to the modulation of the electric signal. The transmitter contains a memory and a controller arranged to divide the transmission of the signal created by the scanning device into segments and, upon sensing a maneuver signal, to direct the memory to retransmit a portion of the signal corresponding to one segment to the receiver.

Abstract: The present invention relates to an arrangement equipped with a motor and a transmission device for the winding of those cameras provided with a winding shaft which is accessible from the outside and which is designed to be rotated until its movement is arrested by a first locking device in the form of a tensioning lock, which after exposure of the film, will once more release the winding shaft. Included in the transmission device is a spring which is tensioned by the motor whilst the camera is being tensioned and which, once tensioning of the camera is complete, is kept under tension under the effect of both the tensioning lock of the camera and a second locking device contained in the arrangement in the form of a rewinding lock. The arrangement also includes a switch which, once tensioning is complete, that is to say with the tensioning shaft in the position in which it is locked against further rotation by the tensioning lock, will interrupt the power supply to the motor.

Abstract: Projecting device for presentation of pictures and of a kind which includes a lockable transport safety device (4, 10, 21) for members (8) which are movable for adjustment purposes and which are of such weight and form that they require the safety against shocks and vibrations. For the adjustment an adjustment device is provided having an operating member (17). The transport safety device (4, 10, 21) is so arranged that it for locking purposes requires a locking element (21). This locking element also is provided to alternatively accomplish a movement of the adjustment device (3) when operating the operating member (17) for the adjustment, whereas the adjustment device (3) being released from actuation from the operating member (17), when the locking element (21) is positioned in the transport safety device (4, 10). In this way no adjustment can take place, when the transport safety device is locked.

Abstract: A mechanism controls the movement of the mirror in single-lens reflex cameras between the exposure position and the viewing position. Articulated arms 12, 13 in the mechanism are pivotally mounted both on a mirror holder 8 and to the camera body 1. The articulated arms are of two different kinds, with at least one kind exhibiting two identical arms 12, each situated on its own side of the camera body and connected together via a parallel guide bar. The articulated arms of one kind, the front articulated arms 13, extend from the mirror holder 8 to the front of the camera body 1, and the articulated arms of the other kind, the rear articulated arms 12, extend from the mirror holder 8 towards the rear of the camera body 1. The bearings C and A in the mirror holder for each type of articulated arm are situated in the same part of the mirror holder 8, with that of the front articulated arm 13 being slightly below that of the rear arm 12, viewed from the plane of the mirror.