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 international standard curves for the spectral distribution of the light density of the dark edged eye (on the left) and the light-cut, color-sensitive eye (right). For more info see: Cosmos. SWEDISH SCIENCE PRESS. Uppsala. 1945, p. 26.

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Size: 2691px × 1857px
Photo credit: © BTEU/TEKNISKA / Alamy / Afripics
License: Licensed
Model Released: No

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