摘要:
A camera with circuitry, a main power source for supplying electric power to the circuitry, a back-up power source for supplying electric power to the circuitry independently from the main power source, a detector for detecting the condition of the back-up power source to produce a warning signal when the back-up power source can not supply sufficient electric power to the circuitry, starting the operation of the detector when the main power source has recovered, setting data to the circuitry in accordance with a manual operation and interrupting the operation of the warning signal when the data setting is operated.
摘要:
A display device for use in a camera comprises a central processing unit and display units to display exposure data and various control modes under the control of the CPU. The display units are arranged to display the exposure data with suitable marks or characters in rows so as to make the operator to read the display easily. The CPU provides control data to deenergize the display unit at the time of initial states of the camera such as at the time of loading a battery in the camera to prevent to display confusing information.
摘要:
A display device for use in a camera comprises a central processing unit and display units to display exposure data and various control modes under the control of the CPU. The display units are arranged to display the exposure data with suitable marks or characters in rows so as to make the operator to read the display easily. The CPU provides control data to deenergize the display unit at the time of initial states of the camera such as at the time of loading a battery in the camera to prevent to display confusing information.
摘要:
A flash photography system which comprises a photographic camera and an electronic flash device;said photographic camera comprisingaperture value output means for producing aperture value under the flash light photographing,flash light stop signal output means for integrating output value of a light value of a photographing object and for producing a signal for stopping emission of a flash light when the integrated value reaches a predetermined value,said flash device comprisingcalculating means for calculating a maximum photographing distance which is covered by the flash light for effecting a correct exposure on the photographing object on the basis of a maximum light value of the flash light and the aperture value fed from the aperture value output means, anddisplay means for displaying the maximum photographing distance on the basis of the output of the calculating means.
摘要:
A camera has an automatic data reading arrangement for reading ISO data provided on a film cartridge. When a main battery is exchanged with an old battery while the film is still loaded in the camera, ISO data is maintained in a memory supported and powered by a back-up battery. If such an ISO data is not available after the exchange of the main battery, ISO data again read from the loaded film cartridge is employed. If the film is not the type that can provide an ISO data, the most widely used ISO data will be automatically set for the further exposure calculation.
摘要:
A camera has an automatic data reading arrangement for reading ISO data provided on a film cartridge. When a main battery is exchanged with an old battery while the film is still loaded in the camera, ISO data is maintained in a memory supported and powered by a back-up battery. If such an ISO data is not available after the exchange of the main battery, ISO data again read from the loaded film cartride is employed. If the film is not the type that can provide an ISO data, the most widely used ISO data will be automatically set for the further exposure calculation.
摘要:
A flash photography system which comprises a photographic camera and an electronic flash device;said photographic camera comprisingaperture value output means for producing aperture value under the flash light photographing,flash light stop signal output means for integrating output value of a light value of a photographing object and for producing a signal for stopping emission of a flash light when the integrated value reaches a predetermined value,said flash device comprisingcalculating means for calculating a maximum photographing distance which is covered by the flash light for effecting a correct exposure on the photographing object on the basis of a maximum light value of the flash light and the aperture value fed from the aperture value output means, anddisplay means for displaying the maximum photographing distance on the basis of the output of the calculating means.
摘要:
A mount arrangement for a photographic camera which is capable of automatic diaphragm control and automatic focusing includes electrical contacts for transmission of electrical signals between a camera body and an interchangeable lens unit, and mechanical transmission members for the automatic diaphragm control and the automatic focusing and positioning member and recess on and at inner periphery of mount members of the camera body and the lens unit so as not to interfere with each other during the start and the course of the mounting of the lens unit onto the camera body through a bayonet mount device.
摘要:
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.
摘要:
A mount arrangement for a photographic camera which is capable of automatic diaphragm control and automatic focusing includes electrical contacts for transmission of electrical signals between a camera body and an interchangeable lens unit, and mechanical transmission members for the automatic diaphragm control and the automatic focusing and positioning member and recess on and at inner periphery of mount members of the camera body and the lens unit so as not to interfere with each other during the start and the course of the mounting of the lens unit onto the camera body through a bayonet mount device.