Notes: Cricklewood, London, N. W. Special sensitive ortho 2449.
Developers for Imperial Plates. Imperial Pyro-soda, Imperial Standard, Acid fixing solution.
Orthochromatic photography refers to a photographic emulsion that is sensitive to only blue and green light, and thus can be processed with a red safelight. The increased blue sensitivity causes blue objects to appear lighter, and red ones darker.
Format: object, glass photographic plate container, orthchromatic emulsion
Licensing: Attribution, share alike, creative commons.
Repository: Blue Mountains Library
library.bmcc.nsw.gov.au
Part of: Local Studies Collection
Provenance: unknown
Date range: c.1900
Links:
en.wikipedia.org/wiki/Orthochromasia
