"Ard" <ard### [at] waikatoacnz> wrote:

>
> - Grapple all your colour values down so the fully-lit pigments look
>   right again.  Squaring them does the trick.  Try out your colour
>   picker: your fully-lit pixels will be as they were with
>   assumed_gamma 2.
>
YES INDEED, this does work!  I went back to my "linear" POV grey-band test
scene, squared all the RGB values (in effect, making them non-linear), and
the resulting POV render, using assumed_gamma of 1.0, looks exactly the way
it should.

FASCINATING!

So...if I had chosen 2.2 as my overall system gamma (rather than 2.0), then
I would have had to alter each of  my "linear" grey-band values by raising
them to the power of 2.2, rather than just squaring them...to get the same
pleasing visual result.  Correct?

Ken

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