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 between the lighting rate (I) and the fibrillation of the frequency (s) of switching arne between light and dark. Bäckström, Helmer. The art of filming: A manual in amateur cinema. 1931.

---

Size: 2145px × 2331px
Photo credit: © BTEU/TEKNISKA / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: