“Paget Color Screen (1913–ca. 1922): lines of red and blue squares alternated with lines of green and blue squares (Fig. 2.52). The lines are at a 45-degree angle from the edge of the plate. The side of the red and green squares measures ...
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Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 69.