Synchronizing device for dual camera photography

Details Synchronizing device for dual camera photography Synchronizing device for dual camera photography

1989-04-24

1990-08-21

Gellner, Michael L.

3542671, G03B 1740

Patent

active

049510738

ABSTRACT:
Dual camera photography is effected using two conventional cameras of the same or diverse models with, for example, one camera carrying instant film and the other camera housing negative film. Actuation of each of the cameras is controlled by the present synchronizing device so that the shutter of each camera is open when the strobe or flash unit of one of the cameras or one or more remote strobe or flash units controlled by one of the camera's fires. The present synchronizing device assures that both shutters are open when the flash fires by, first measuring the difference in the time lag between camera actuation and the flash sync pulse of each camera, and, second, delaying actuation of one camera relative to the other so that the sync pulse of the strobe firing camera follows the sync pulse of the non-strobe firing camera by a sufficient time interval to allow the shutter of the non-strobe firing camera to open before the flash fires.

REFERENCES:
patent: 4431290 (1984-02-01), Kennedy
patent: 4488794 (1984-12-01), Dolgow et al.

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