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The photography of coloured objects (1909)
Mees, C. E. Kenneth (Charles Edward Kenneth), 1882-1960, Newton, A. J · Croydon, Wratten & Wainwright · leaf 102
hromo- scope. The filters to be used for projection are somewhat different both from the taking filters and also from the original narrow bands which we have hitherto assumed. In projection with the triple lantern, especially, the great difficulty is to obtain sufficient light, and this difficulty… … 4 000 3,000 ©poo CURVE ' OF NATURAL BLUE— GR-EEN MATCHING PURE LIGHT OF W.L. 5,^00 4,000 9, COO feooo ZOOO Fig. 24 absorptions of the projecting filters should be abrupt, and that they should not appreciably overlap one another. Inasmuch as the taking filters do somewhat overlap, it is better to…Photography · Color photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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