Thread: "16-bit" mode.
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  #30  
Old November 17th 04, 06:32 PM
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wrote:

(Mitch Alsup) wrote:

This looks like somebody is applying the gamma correction to the RAW

data
ouptut = input**2.2 / some-fixed-scaling


No; it's totally linear.


Form your own table:

32764/19128 = 1.713

65525/32762 = 2.000

So it isn't exactly linear. From these two points (essentially all
you posted) it looks like there is a gamma-esque hump in the transfer
function. You should fetch gnuplot or a similar plotting tool and
plot the entire "real" vs "photoslop" correspondance you obtained.