Abstract: An exposure control device for a camera having light measuring elements capable of outputting an average light measurement corresponding to the brightness of the entire scene to be photographed, and outputting a spot light measurement corresponding to the brightness of a part of the scene to be photographed, wherein an exposure control is carried out based on the spot or average light measurements. In an exposure control for daylight photography, the exposure control is carried out based on the average light measurement or based on the spot light measurement at the time of an AE lock, and for flash photography, the exposure control is carried out based on the average light measurement regardless of whether the AE lock operation is carried out.

Abstract: An exposure control device for flash photography having a first program mode wherein an exposure time is fixed at the flash synchronizable shutter speed and a diaphragm aperture value is changed at a high brightness region according to the brightness of an object to be photographed, and a second program mode or flash photography wherein the diaphragm aperture value and the exposure time within a flash synchronizable shutter speed are changed within a wide range of the brightness of the object to be photographed, and a combination of the diaphragm aperture value and the exposure time gives an exposure predetermined by taking the flash light emission into consideration. The exposure control unit is capable of carrying out the exposure control in the first or second program mode selected by a manually operated mode selecting unit.

Abstract: In the interline type charge transfer imaging device, two of the three groups of wiring through which driving pulses are sent to each of three groups of electrodes constituting vertical charge transfer devices are arranged in horizontal direction and the remaining one group of wiring is arranged in vertical direction. Light-shielding layer is installed on the vertically running wires and the electrodes connected with those wires.

Abstract: This invention is directed to a camera provided with an automatic focus adjusting apparatus in which, in addition to the function of carrying out an AE lock based on an in-focus detection, an AE lock can be carried out either before or after an AF operation is completed or when an AF operation is impossible. In other words, irrespective of the condition of an automatic focus adjusting means, an AE lock can be accomplished at any desired moment. Therefore, the degree of freedom in a photography operation is expanded.

Abstract: A camera, adapted to function with film speed data, includes structure for introducing the film speed data and for storing that data. Manually set exposure time data is also stored. A determination is made whether the film is advanced to the first effective film frame. The film speed or exposure time data is alternately indicated and the indication is controlled to indicate the film speed data until the film is advanced to the first effective film frame subsequent to which the indication is switched to indicate the exposure time data when the film is advanced to the first effective film frame. The indication may subsequently be manually switched to indicate the film speed data. The film speed data may be read from the film cartridge upon closure of the back lid of the camera and transferred to storage.

Abstract: A flash photography system for a photographic camera and a flash device adapted to be connected thereto with the camera providing an aperture value output for flash light photography and a flash light stop signal obtained from an integrated output of the light reflected from a photographic object to terminate flash light emission when the integrated value reaches a predetermined value. The flash device calculates a maximum photographing distance covered by the flash light for effecting a correct exposure of the photographic object from the maximum flash light value and the aperture value from the camera. The maximum photographing distance is displayed by a suitable display visible to the camera operator.

Abstract: An exposure display device for a camera, which can display not only the density of the background to be photographed on a film but also the density of a primary object to be focused with respect to an exposure control value used for exposure control operation. In natural light photography, the brightness of the primary object area at which automatic focus detection is conducted and the brightness of divided object field areas are measured, the density distribution of the primary object area and those of the divided object field areas reproduced on the film are calculated basing on the measurement, and the results are displayed in correspondence to the exposure control value. In flash light photography, the expected brightness of the primary object area and divided object field areas are measured, and the density distribution of the primary object area and object field areas reproduced on the film are calculated and displayed in correspondence to the exposure control value.

Abstract: An exposure calculating device is disclosed, in which a field of view is divided into a plurality of areas and the brightness values of these areas are measured. Luminance values are calculated based on signals derived from the measured brightness. Under certain conditions, the luminance in the center of the field of view is found, and is used to recalculate the luminance values for an exposure calculation. Further, a brightness control means is provided that divides the field of view into a plurality of areas, any one of which or all may be selected to control the brightness of the exposure.

Abstract: A multi-point photometric apparatus for use in a camera or the like operative to measure the luminance of several divided areas in an objective field. Among the luminance signals produced by the photometric circuit for the several areas, a signal from one area which is used for automatic focus adjustment is designated as a reference value, and the maximum and minimum values of luminance signals and the differences of these from the reference value are evaluated. The reference value and differences in the form of digital data and information on the film latitude are processed with a microprocessor to calculate the exposure value. The exposure value is modified to an extend that the reference remains within the film latitude.

Abstract: In a camera functioning with film speed data introduced by a manual operation for setting desired film speed data, exposure time data is set by a manual operation, and one of the film speed data and the exposure time data are alternatively indicated. The first and second indicating means are controlled, in response to first setting means such that the film speed data appears at the first indicating means when the first setting means is manually operated. The exposure time data is selected to appear at the first indicating means when the first setting means is not manually operated. The second indicating means is disabled when the first setting means is manually operated so that the film speed data appears without appearance of the additional data. The second indicating means is enabled so that the additional data appears with the exposure time data when the first setting means is not manually operated.

Abstract: A motor-driven camera comprising a film winding and rewinding mechanism operable by a starter switch, and a low power consumption type memory unit. The film winding and rewinding mechanism include a transmission changeover gear. For sliding this gear a motor is rotated backward once to eliminate a contact between teeth of the changeover gear and a drive gear operatively connected to the motor. The memory unit includes a flip-flop memory circuit and a switching circuit. The memory circuit shifts from a first state to a second state and remains in the second state when the starter switch is closed. In the second state the memory circuit outputs an operation signal to a transmission mechanism control unit, and returns to the first state upon receipt of a signal output by the control unit when an operation is completed. The switching circuit performs a positive feedback function with respect to the closure of the starter switch.

Abstract: A flash photographing apparatus, including a camera and an electronic flash device, comprises a plurality of photoelectric elements for measuring brightness of a main and sub objects to be photographed. A diaphragm aperture value and shutter speed value of the camera are controlled according to the brightness of the sub object. A quantity of flash light emission is controlled according to a difference between the brightness information of the main and sub objects.

Abstract: In a automatic focussing camera a focusing lens is moved toward the in-focus position while performing a defocus detection while the defocus amount of the photographic lens is large so as to repeatedly judge the error of the position of the focusing lens. When the defocus amount is decreased lower than a predetermined value the lens is stopped and further defocus detection is made for effecting an accurate defocus detection. The error of the defocus detection is small partly because the defocus detection is made while the lens is stopped, and partly because the defocus detection is made under such a state that the error is smaller than the predetermined value.

Abstract: This invention is directed to a camera provided with an automatic focus adjusting apparatus in which, in addition to the function of carrying out an AE lock based on an in-focus detection, an AE lock can be carried out either before or after an AF operation is completed or when an AF operation is impossible. In other words, irrespective of the condition of an automatic focus adjusting means, an AE lock can be accomplished at any desired moment. Therefore, the degree of freedom in a photography operation is expanded.

Abstract: An exposure control device for a camera in flash photography comprising;first means for measuring light from a central area of an object field; second means for measuring light from another area surrounding the central area; means responsive to said first and second measuring means for detecting a rear light condition; means for controlling exposure in response to said second measuring means to cause an over-exposure by a given value when said detecting means detects the back light condition; means for directing a flash light emission; and means for integrating light reflected from the object field upon the flash light emission to stop the flash light emission when the integrated light reaches a predetermined level.

Abstract: A release operation of a camera adapted to be transferred to a normal photographing condition through winding-up of a film by a predetermined length is allowed in conditions before transfer to the normal photographing condition even if a release inhibition signal is being generated. Whether or not the camera is in the normal photographing condition is determined based on the state of a switch which is turned OFF upon transfer of the camera to the normal photographing condition. The turn-OFF of the switch always causes the camera to read a code pattern on a film cartridge to automatically set the film sensitivity represented by the code pattern. The camera is also capable of manual film speed setting.

Abstract: A charge transfer type solid-state device incorporating a charge coupled device (CCD). In order to eliminate field after image and smear, at least two electrode pairs are provided in a vertical CCD shift register for transferring the signal charges stored in photoelectric conversion elements, the electrode pairs being disposed within the vertical pitch of the photoelectric conversion elements.

Abstract: A camera system operable with data carried from a camera accessory to a camera body. The camera accessory has a ROM for storing various data at a plurality of addresses, respectively, each of which data consists of a plurality of bits, and a coupling terminal for receiving a train of clock pulses from the camera body. A circuit is also provided for squentially designating the address of the ROM one by one to permit the ROM to output data stored at the designated address. In the circuit, an address signal is formed in response to the clock pulses, received through the coupling terminal, for designating an address. The data derived from the ROM are transmitted to the camera body.

Abstract: An exposure calculating device, for use in a camera having a programmed exposure control mode which automatically calculates a shutter speed and a diaphragm aperture value in a programmed manner, is further capable of modifying the combination of calculated shutter speed and aperture value in accordance with the manual operation. The amount of modification value is automatically reset in response to the detection of the operational condition of the camera, such as a detachment of an exchangeable lens, the charging completion of an electronic flash device, the camera exposure control by a camera accessory, and the change of the exposure control mode.

Abstract: A camera system comprising a camera body and an interchangeable lens assembly adapted to be coupled to the camera body. The interchangeable lens assembly has no manipulatable aperture adjusting ring, but has an aperture mechanism and a read-only memory both built therein. The read-only memory stores therein various data peculiar to such lens assembly. The camera body communicates with and power the lens assembly through a set of terminals connectable with associated terminals provided in the lens assembly. The terminals in each of the camera body and lens assembly are arranged in a generally arcuate row with the data transmitting terminal located at one extremity of the arcuate row on the leading side with respect to the direction of turn of the lens assembly which is effected when the lens assembly is to be completely coupled to the camera body.