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 for Web and Evans Attempt with shared exposure. For more info see: cosmos. SWEDISH SCIENCE PRESS. Lazy. 1944. p. 155 and Web and C: H: Evans, Journal Opt. Soc. Amer. 28, 431 (1938).

---

Size: 2208px × 2263px
Photo credit: © BTEU/TEKNISKA / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: