I'm not terribly concerned with paper, and that is cheap and easy to test anyway. I do however use a Zone VI compensating timer, whose smallish red led dim-able (for film) display has no effect within 4 feet of my sheet film developing trays. There is little or no light directed outwards of the display, as say in the manner of a red LED flashlight, ...or taillight (i.e., I cannot see my hand, or anything else, working in my trays – only the display). The lowest intensity of the display is barely visible when the room lights are on, but clearly visible in the dark. I certainly wouldn't feel comfortable using anything close to bicycle taillights in my lab for film. The mammoth red display of this clock would certainly give me pause, unless (inconveniently) turned off for film. It would though be nice to replace my safelight (ambient) lit wall clock, whose sweep second hand is often inscrutably visible (all the more with age ), for paper processing. Since there don't seem to any other objective or manufacturing criteria, please let us know of your testing results.
Originally Posted by argentic
Last edited by ROL; 06-19-2013 at 02:47 PM. Click to view previous post history.