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John McCann on the first versions of 20×24 Film

John McCann, Director of Vision Research and close associate of Polaroid founder Edwin Land discusses the approach to producing film for the newly created 20×24 camera.  The camera was to utilize Polacolor film which was produced for pack film and single sheet 4×5 packets.  To produce a clean edge these films utilized a rail and “mask” which kept the reagent under control.  Hear how they attempted to do this for the much larger 20×24 sheets and how Dr. Land made a suggestion………….

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