Ability to discriminate lightness values

Discussion in 'Optometry Archives' started by Johannes, Sep 25, 2006.

  1. Johannes

    Johannes Guest


    I read somewhere that due to visual interference the eye distinguishes
    fewer luminance levels in dark areas than in light areas and that by
    those means the number of luminance levels the eye can distinguish
    decreases gradually from light to dark zones. Now does anybody know if
    there is a certain proportion for that ability? If we´re able to
    distinguish, say, ten times more values in areas of a given high
    log/intensity than in those with a given low log/intensity?

    Thanks for your input!
    Johannes, Sep 25, 2006
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