Quote:
Originally Posted by OsmosisStudios
Street lights burn orange. Very orange.
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Well, there's lots of different street lights. The "orange" ones are sodium vapor lamps, which emit virtually all of their light at the sodium doublet (atomic transitions) wavelengths of 589+ nm and 590- nm, your eye can't tell the difference. Shooting photos under these means you are using essentially a monochromatic light source. White balance by itself helps a lot but isn't a full answer since different surfaces reflect different wavelengths in somewhat different manners, and there's a lot of solar wavelengths missing
The most popular other street light in the US tends to be the mercury vapor lamp, usually with color corrections via a phosphor. Uncorrected mercury vapor lamps emit mainly the mercury triplets which range roughly 360nm-435nm and appear blueish. The color corrected mercury lamps pump up the red end of the spectrum and have peak emissions running from about 250nm-575nm, which appears "more white" to the eye and the camera. White balance adjustments work better under mercury lamps than under sodium, IMHO
Bob
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Some cameras, various lenses, a few gadgets, assorted computers, the odd satellite from time to time and, usually, an eye
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