[argyllcms] Re: Cctiff

Hi,

Roger Breton wrote:


I tried cctiff this morning. Any reason why the term "photometric" is used
as opposed, I guess, to "perceptual"? For example, toward the end of the
comments, I got :


Using TIFF photometric 'Separated'
That's just a detail of the TIFF format being displayed - nothing to do with the actual colour management. The term photometric just refers to how the data inside the TIFF file is interpreted - including the colour space.
The most commonly encountered values for the PHOTOMETRIC_INTERPRETATION TIFF Tag are PHOTOMETRIC_RGB, PHOTOMETRIC_MINISWHITE (greyscale, 0->white), PHOTOMETRIC_MINISBLACK (greyscale, 0->black), and the one you're seeing - PHOTOMETRIC_SEPARATED (usually CMYK, but used for any "exotic" colour system for which there isn't separately defined value.) 

All the best,
--
Alastair M. Robinson

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