Raycol was a two-color additive film color process developed by the chemist Anton Bernardi in 1929. [1] It was used by Maurice Elvey to film The School for Scandal , [2] but was commercially unsuccessful. [3]
It used frames shot through red and blueish-green filters, which were recorded on standard black-and-white film stock, and projected with red and white light respectively. [3] [4]
It was covered by British patents 329,438 and 335,038. [4]
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