Flashlight photographing device

Details Flashlight photographing device Flashlight photographing device

1990-04-27

1991-10-08

Perkey, W. B.

35414911, 354132, G03B 1505

Patent

active

050558650

ABSTRACT:
A flashlight photographing device wherein the possibility of missing a shutter chance is minimized, a shutter speed can be set appropriately upon trailing shutter blind synchronized photographing, and an interval of time is minimized until a subsequent photographing operation is permitted. The flashlight includes a plurality of flash devices which are controlled such that one of them which has been charged up at the earliest is caused to emit flashlight. After the charged voltage of a main capacitor of one of the flash devices becomes higher than a second predetermined value but lower than a first predetermined value at which the flash device can operate to emit light, operation of an automatic focusing motor or a film winding motor of a camera is started. When trailing shutter blind synchronized photographing is to be performed in an exposure mode wherein a shutter speed is to be automatically set, exposure of the camera is controlled in accordance with a predetermined exposure time as in bulb exposure.

REFERENCES:
patent: 4333719 (1982-06-01), Takami et al.
patent: 4573786 (1986-03-01), Taniguchi et al.
patent: 4692013 (1987-09-01), Okino
patent: 4705373 (1987-11-01), Ohmori

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