daicehawk

Joined on Sep 20, 2017

daicehawk's recent activity

  • sRGB under D65 as per specs R1 G255 B240 is L90,69 a52.28 b6.97. See above. What was the illuminant for the calcualtion \Why not a* is not - 180? It isn't the color, it's imaginary color. Yeah, ...
  • You are stating the sRGB values which means the RGB values in the sRGB color space. How did you map sRGB values to LAB values that are outside the sRGB? Why not a* is not - 180? Please tell us how ...
  • sRGB values (if we are talking not "sRGB devices", but the abstract sRGB color space) can not be "converted" to Lab since L90 a-54 b-8 is way BEYOND sRGB - see http://www.brucelindbloom.com , its ...
  • Everybody can see how "explanatory" this picture is ? Take 90 -54 -8 Lab values, which of course are clipped in sRGB (RGB -50 (Sic!), 255,240) and pretending seeing the same color. I have no idea, ...
  • There is NO NATIVE RAW color space, which is "non colorimetric". If it is not colorimetric, it is not a colorspace. The RGB of the slide film PER SE with no scanning is optical density in each ...
  • Cameras do not see colors and there are NO IMAGINARY COLORS until we volunarily map the RGB into some colorspace whose primaries may lie outside of the locus. Camera sensels count photons whose ...
  • Ok, reversal film. Being too anal huh? I am a non Native speaker and not a pro photographer.
  • By this logic, the digital camera has no imaginary colors problem as well, since scanning is basically taking a digital photograph (under a poor light).
  • Basically, the slide film has an inbuilt color transform system, with at least 2 color transforms from XYZ to RGB sensitivity and then RGB sensitivity to dye densities. And the latter might be not ...
  • What do you mean by "imaginary color"? The colors which we do not discriminate (metamers to humans) but the camera does? Or the "outside of the horse shoe" colors? If the latter, then it is just ...
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