Skiopticon image from the Department of Photography at the Royal Institute of Technology. Use by Professor Helmer Bäckström as teaching material. Bäckström was Sweden's first professor in photography at the Royal Institute of Technology 1948-1958. The picture is written image proportions. For more info: see photographic manual. Nature and Culture. Other revised edition 1958-59 page 914.

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Size: 2418px × 2067px
Photo credit: © BTEU/TEKNISKA / Alamy / Afripics
License: Licensed
Model Released: No

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