Thread: Colourful Tucan
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Old 23-07-2009, 09:54 AM
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Peter Ward
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Join Date: Dec 2007
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Quote:
Originally Posted by troypiggo View Post
Can I ask some newbie questions? How come the R, G, and B are different length exposures? Shouldn't they be the same, unless you're after some false colour or something?
The QE of (most) CCD cameras varies with the wavelength being captured. The camera I use is most sensitive in green, and less so in Red & Blue. Varying exposures helps to "even up the curve" and infact gives a much closer approximation to "true" colour than a straight 1:1:1 exposure ratio.

Last edited by Peter Ward; 23-07-2009 at 09:58 AM. Reason: clarification
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