Journal of the Society of Motion Picture Engineers (1930-1949)

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1949 FOCAL-PLANE SCANNERS 455 time we move the holes to a new nonoverlapping position, we can take a new picture until we have filled the film with images. Neither the film nor the sieve can be allowed any dimensional change between Fig. 3 — A beach scene. the time of exposing and the time of viewing the pictures, if a very disturbing scrambling is to be avoided. It seemed too ambitious at the start to attempt making an extremely accurate sieve and an extremely accurate mechanical system