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 of an oblique cut through the layer of a lipper plate showing the series of silver lamella. For more info see: Bäckström, Helmer. Photographic manual. Other revised edition. Nature and Culture. Stockholm. 1948. p. 967.

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Size: 2118px × 2360px
Photo credit: © BTEU/TEKNISKA / Alamy / Afripics
License: Licensed
Model Released: No

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