Patent
1982-10-04
1984-01-24
Adams, Russell E.
35412712, 354418, 354465, G03B 1505, G03B 1718
Patent
active
044272782
ABSTRACT:
A flash photography system includes an electronic flash device capable of light measurement for automatic flash light control and a camera capable of automatic shutter speed control at a daylight photography mode and at a flash photography mode. The flash device generates a flash readiness signal and a flash light control termination signal at a common terminal for the transmission of these signals to the camera through a corresponding common terminal, wherein these signals cause the camera to effect the automatic shutter speed control at the flash photography mode. The camera generates an interrupting signal at the corresponding terminal in response to a camera release operation and the electronic flash device interrupts the generation of the flash light control termination signal in response to the interrupting signal. In indicator which makes an indication in response to the flash readiness signal and the flash light control termination signal respectively is also provided in the camera.
REFERENCES:
patent: 4295717 (1981-10-01), Kitagawa
Hosomizu Hiroshi
Ishida Tokuji
Adams Russell E.
Minolta Camera Kabushiki Kaisha
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