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 Girl in pram. The picture is written Betn. 1/2 my rodankoppar. Toned in Rodamine G. (30/00). Ofix. H. Bäckström. Jan 1936. Bäckström Jan 1936. For more info: see the photographic manual of Helmer Bäckström. Nature and Culture. Other revised edition 1958-59. Cape. 75-79 toning procedures for silver images (page 585 and following).

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Size: 1961px × 2549px
Photo credit: © BTEU/TEKNISKA / Alamy / Afripics
License: Licensed
Model Released: No

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