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Posted by PTravel on 07/02/06 20:12
Sodium vapor lights are the common night time illumination in most cities in
the world, and put out a distinctive yellow light. Because they work by
exciting sodium atoms, the light output is a very narrow spectrum, i.e. it's
not just a question of being warmer or cooler -- there simply are no other
bandwidths present. Naturally this results in anything being videotaped as
appear, essentially, monochromatic (for an example, see here:
http://www.travelersvideo.com/amsterdam%20at%20night.wmv)
Is there any way around this to get, if not a more accurate color rendition,
at least a more interesting one? Short of bringing my own lights, which is
not feasible at all, I can't think of anything that will add spectra that
simply aren't there.
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