On Thu, 03 Sep 2009 16:42:46 +0200, Warp <war### [at] tagpovrayorg> wrote:
> Warp <war### [at] tagpovrayorg> wrote:
>>   However, there are situations where you precisely *don't want* that.
>> You want raw pixel values, and nothing else, as I exemplified above.
>
>   I just figured out the *perfect* example of a situation where you want
> raw, linear pixel values which are *not* gamma-corrected: When you are
> rendering an image which will be used as input to create a heightfield.
>
>   There 0.5 should mean exactly half height, not a height of 0.73.

Which is exactly what you should get if you use a gamma-aware image  
format, regardless of what you set File_Gamma to.



-- 
FE

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