Camera and system of camera and electronic flash device

Details Camera and system of camera and electronic flash device Camera and system of camera and electronic flash device

1991-12-05

1993-08-24

Adams, Russell E.

354137, G03B 1505

Patent

active

052393364

ABSTRACT:
A camera system includes a camera having a focal plane shutter and an electronic flash device cooperable with the camera. The flash device, which emits light repetitively, has two operating modes. In a first mode, a light emission start signal is synchronized with the start of the exposure of a film exposure area by a leading curtain of the shutter, and a light emission stop signal is synchronized with the end of the exposure of the film exposure area by a trailing curtain of the shutter. In a second mode, the light emission start signal is synchronized with the full exposure of the film exposure area by the leading curtain, and the light emission stop signal is synchronized with the start of shielding of the film exposure area by the trailing curtain.

REFERENCES:
patent: 4422743 (1983-12-01), Izumi et al.
patent: 4717934 (1988-01-01), Kobayashi et al.
patent: 5075714 (1991-12-01), Hagiuda

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