Abstract
THE customary method of making a set of colour-separation negatives for colour photography is by successive exposures on separate plates through the appropriate colour filters. Usually three negatives are required. This method fails for snapshot exposures of moving objects. For many years inventors have attempted to devise three-colour cameras operating with a single exposure during which all three images are simultaneously recorded. Several of the optical devices which have been used to achieve this end were briefly described by Dr. D. A. Spencer in 1933 (Photographic J., 74, 103; 1934) and a further method was described in 1934 (ibid., 74, 244; 1934) by the late Mr. W. T. P. Cunningham.
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Three-Colour, One-Exposure Camera. Nature 135, 479 (1935). https://doi.org/10.1038/135479a0
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DOI: https://doi.org/10.1038/135479a0