1 янв 1913 г. - 35mm film and the leica

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One of the more common formats of roll film was 135 format, also called 35mm. This format was used primarily for motion pictures, but it also started getting spooled into small cartridges for miniature still cameras, as they were called then. In 1913, Oskar Barnack, an engineer at Leitz, designed a prototype still camera that transported the film horizontally, producing a 24x36mm image frame.

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