Adjective
Being uniformly sensitive across the entire visible range, and thus reproducing colours faithfully
(photography) Sensitive to all colours except red
Source: en.wiktionary.orgAs both of these orthochromatic films were no faster than previous offerings; the improvements were in granularity and sharpness. Source: Internet
However, there are also variant types, such as infrared film (in black and white or false color ); specialist technical films, such as those used for X-rays ; and obsolete processes, such as orthochromatic film. Source: Internet
In 1925, Gevaert introduced an orthochromatic stock with limited color sensitivity and a fully panchromatic stock, Pan-23. Source: Internet
The cross-cutting between panchromatic and orthochromatic stocks caused continuity problems with costume tones and panchromatic film was often avoided. Source: Internet