> Alain<aze### [at] qwertyorg>  wrote:
>
>> assumed_gamma is been phased out and obsolete.
>> Removing it, or commenting it out is the thing to do.
>>
>> I don't see your problem on my side. In fact, the files I render with
>> beta 37 are identical to the beta 36. But, I had the habit of removing
>> any assumed_gamma before I started using any of the 3.7 betas.
>> In some scenes, I found some prety weird values, like 0.1, 5 or more,
>> and some negative values...
>>
>> Anyway, file_gamma and display_gamma should be set to the actual gamma
>> value of your system. 0.980 very probably is not the real gamma of your
>> system. Normaly, it's closer to 2.2.
>>
>>
>>
>> Alain
>
> Hello Alain,
>
> Many thanks for your answer.
> I tried to remove "assumed_gamma" in the .pov file. In both cases, with (value
> 0.8, 1.0 or 2.2) and without, the picture in the render povray window is the
> same and the picture in the file picture (e.g. picture.bmp, png or tga) is very
> bright washed out. I tried equally with and without radiosity and the same
> results: very bright washed out files.
> When I use as the first lines in the .ini file:
>    File_Gamma = 0.98
>    Display_Gamma = 0.98
> or 1.0 or 2.2 I have the same problem:
> gamma in the display povray window and the file picture (bmp, tga or png) is not
> the same: very bright washed out files
> But with this ini file, we can read equally in the message windows
>      "Parse warning: gamma_correction not specified or inferred so is turned off
> for compatibility with this pre POV-Ray 3.7 scene."
>
> So how we can specify the same gamma for the render povray window and the file
> picture?
>
> Many thanks,
>
> JJ
>
>

To set both to the same thing, use the same value in the ini file.

Set Display_Gamma to the gamma of your system. It sets the gamma for the 
preview.

Set File_Gama to that same value or 2.2

Maybe you have a problem with your viewer.


Alain

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