Skiopticon image from the Department of Photography at the Royal Institute of Technology. Use by Professor Helmer Bäckström as lecture material. Bäckström was Sweden's first professor in photography at the Royal Institute of Technology in Stockholm change of sensitivity with color concentration. For more info see: Mees, Kenneth The Theory of the Photographic Process. Macmillian Co. New York. 1942. Fig. 401, p. 1068.

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Size: 2517px × 1986px
Photo credit: © BTEU/TEKNISKA / Alamy / Afripics
License: Licensed
Model Released: No

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