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Sensitizing theory

Description

“Dr. H. W. Vogel, the discoverer of colour sensitizers, made three-colour photography possible, and has been the first to recognise the relation between colour sensitiveness of plate and printing colour in the following principle made known in 1885. The dyestuff used as colour sensitizer must be used as the printing colour, and if the dye should not be suitable for this purpose, an equivalent pigment of the same spectroscopic qualities must be found.”

(Hübl, Arthur Freiherr von (1904): Three-Colour Photography. Three-Colour Printing and the Production of Photographic Pigment Pictures in Natural Colours. London: W.A. Penrose, p. 86.)

“Vogel’s theory is, as he says, not theoretically strictly correct; but of practical value and characterizes in an easily grasped form for the laity the connection between the printing inks and the plate sensitizing.”

(Wall, E.J. (1925): The History of Three-color Photography. Boston: American Photographic Pub. Co., p. 10.)

Secondary Sources

Hübl, Arthur Freiherr von (1904): Three-Colour Photography. Three-Colour Printing and the Production of Photographic Pigment Pictures in Natural Colours. London: W.A. Penrose, 86-87. View Quote

Wall, E.J. (1925): The History of Three-color Photography. Boston: American Photographic Pub. Co., pp. 9-11. View Quote