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Posted by Rgr on 07/03/06 02:10
PTravel wrote:
> 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.
To add to what the others have said, you can correct to some degree in
post production. I get that same color cast on my GL2 while a cheap JVC
automatically adjusts the color balance to where the color cast is gone.
And so is most of all the other colors. There's some color, but just barely.
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