Skioptic monitor from the Department of Photography at the Royal Institute of Technology showing subtractive color synthesis of RGB (red, yellow, blue). Use by Professor Helmer Bäckström as teaching material. Bäckström was Sweden's first professor in photography at the Royal Institute of Technology 1948-1958. For more info: see the photographic manual of Helmer Bäckström. Nature and Culture. Other revised edition 1958-59. Cape 127 Additive and substractive color mixture (p. 949 and following)

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Size: 1923px × 2599px
Photo credit: © BTEU/TEKNISKA / Alamy / Afripics
License: Licensed
Model Released: No

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