[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

Re: Ion blue lights - a test report




>From what I can gather,  the daytime vission cells, cones,
are very sensative to red light.  Thus you can light a dark
room with dim red light and not expose film.

The night vision cells are cones, which don't see in color
very well, but respond well to the cool end of the spectrum.


paul timmerman