[Tig] color perception of lights
Tue Oct 16 18:55:29 BST 2001
I've always noticed that from an airplane, sources of light on
the ground have a very distinct hue, for example streetlights in
the U.S. will be quite blue or quite amber (mercury vapor vs.
sodium). In Rio de Janeiro, the lights used to illuminate the
beach are I believe fluorescent, from the air they are really
When I'm walking around on the ground and look at these same light
sources their color is not as distinct.
Is this due to the fact that on the ground, the eye adapts to the
color shift because the light becomes environmental, but from the
air, the lights are 'point' sources and are not themselves skewing
color perception, or is there some additional cause?
Rob Lingelbach http://www.alegria.com
System Administrator rob at film.calarts.edu
Computer Animation Lab rob at alegria.com
California Institute of the Arts
"Heaven: where the bullshit is only on TV" --Frank Zappa
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