Frank_C schrieb:
> I used indeed the same resolution settings for both renderings.
> As Stephen indicated, the assumed_gamma keyword made both renders equal. However
> I added an {assumed_gamma 2.2} in POV3.7 instead of an {assumed_gamma 1} in
> POV3.62. This is because -on my PC- the latter setting had the effect of
> "flattening" the sphere (or any other object).

Ah, I see! I thought you meant geometric "flattening", but you're 
talking about colors.

Yes, gamma handling is significantly different between 3.6 and 3.7, and 
does lead to differences in color "intensity".

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