Orchid XP v7 <voi### [at] devnull> wrote:
> That's... interesting. I'm fairly sure I read somewhere that for 
> *greyscale* the human visual system can only distinguish about 16 
> different levels.

  That's unusually easy to prove wrong. How many bars can you count in
this image? http://warp.povusers.org/images/grayscales.png

  The number you counted is the amount of grayscales you can distinguish
at least. (The true number is probably at least that times 10 or more.)

-- 
                                                          - Warp

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