@ZoneIII You can process film in tanks or drums with the lights on, of course, but the film must be loaded in in total darkness. B&W papers are sensitive to blue light (graded papers) or blue and green light (variable contrast papers). The most common safelight used with b&w papers is the "OC" filter which is an amber. However, there are some papers that should be processed under different colors of safelights so it's important to read the safelight requirements for any paper you use.
@caper121 No, you can't use a safelight for this type of film. Panchromatic film is sensitive to the full spectrum of light so it must be processed in total darkness. That said, there is a method that was used more in past but is still done by some to do a quick inspection of development with a very dim deep green light but that is only done for a moment. Another exception is orthochromatic film (graphic's arts) that can be processed under a red safelight.
@ZoneIII You can process film in tanks or drums with the lights on, of course, but the film must be loaded in in total darkness. B&W papers are sensitive to blue light (graded papers) or blue and green light (variable contrast papers). The most common safelight used with b&w papers is the "OC" filter which is an amber. However, there are some papers that should be processed under different colors of safelights so it's important to read the safelight requirements for any paper you use.
ZoneIII 1 year ago
@caper121 No, you can't use a safelight for this type of film. Panchromatic film is sensitive to the full spectrum of light so it must be processed in total darkness. That said, there is a method that was used more in past but is still done by some to do a quick inspection of development with a very dim deep green light but that is only done for a moment. Another exception is orthochromatic film (graphic's arts) that can be processed under a red safelight.
ZoneIII 1 year ago
Excuse my ignorance, but can you use a darkroom light for doing this development, or is that only used in developing prints?
caper121 1 year ago