Motion-picture camera with diaphragm control system having fadeover capability

摘要: The user selects a fadeover duration by selecting the number of pulses in reference pulse packet registered counter. During film transport either direction, frame-pulse counter counts up frame equal to packet, and then performs another counting cycle. Each cycle advances program-step Logic circuitry is responsive count on and, during successive program steps, causes fade-out, film-rewind, fade-in operations be performed. adjusting motor for diaphragm operates at speed inversely related amount which changes setting each always same.