Understanding 'selective color' ?

Discussion in 'Photoshop' started by Hannes F., Jul 13, 2006.

  1. Hannes F.

    Hannes F. Guest


    i'm tryng to understand the 'Selective Color' command in photoshop.
    I managed to figure out how the command changes the 'control' colors
    (yellow, green, blue, red, cyan, magenta, black, grey, white). E.g.
    mode 'relative' transforms the color to CMY, multiplies the (C,M,Y)
    factor with the (C,M,Y) value of the respective color and re-transforms

    the color to RGB.
    But i couldn't figure out how the command changes the 'intermediate'
    colors. Must be some sort of interpolating, but there are many possible

    choices for interpolation, and in which color model is interpolated ?

    Is there some 'selective color' expert who can give me a hint ?
    Hannes F., Jul 13, 2006
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