发明名称 Synchronizing device for dual camera photography
摘要 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.
申请公布号 US4951073(A) 申请公布日期 1990.08.21
申请号 US19890342524 申请日期 1989.04.24
申请人 POLAROID CORPORATION 发明人 SLAVITTER, FREDERICK
分类号 G03B15/05;G03B17/40;G03B17/48 主分类号 G03B15/05
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