Re: Canned or custom camera profiles?
Re: Canned or custom camera profiles?
- Subject: Re: Canned or custom camera profiles?
- From: Richard Wagner <email@hidden>
- Date: Fri, 13 Oct 2006 16:41:17 -0700
Edmund wrote:- Thomas noted that the ICC model is output-referred (because of PCS ??) while camera input is scene-referred, and therefore ICC profiles as such don't apply to this situation. Which, although I don't quite understand it might be a quick way of summarizing Ray's comment.
Check out Wikipedia's article on "CIE 1931 color space"
<http://en.wikipedia.org/wiki/CIE_1931_color_space> and also the "color space" article: <http://en.wikipedia.org/wiki/Color_space>
Digital cameras don't have a gamut, but rather a color mixing function. Basically, a color mixing function is a mathematical representation of a measured color as a function of the three standard monochromatic RGB primaries needed to duplicate a monochromatic observed color at its measured wavelength. Therefore, the measured pixel values don't even *get* a gamut until they're mapped into a particular RGB space. Before then, *all* colors are (by definition) possible.
Hope this helps.
--Rich Wagner |
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