At 03:01 PM 3/10/2006 +0000, you wrote:
>The second way to get 256 combinations from 8 grains is if you *assume*
>each grain is twice the size of the next one. i.e. grains are not all
>the same size
So you would get: 0,1,3,7,15,31,63,127,255 as values, not all 256 values.
However this is a natural log scale and maybe closer approximation to
what linear sensor digital data info becomes after converting. So maybe
with emulsions, where you have variable sized grains, plus taking into
account the log scale for brightness, film doesn't look as bad as the
ON/OFF theory proposed in Luminious Landscape article.
Wayne
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