Am 18.10.2016 um 22:35 schrieb Le_Forgeron:
> The only difference is the setting of the version and presence or not of
> assumed_gamma.
> 
> Notice that there is a real difference between 3.7g2 and 3.6. Small, but
> it exists.

I would expect those differences to be the result of not having
explicitly specified "File_Gamma".

"File_Gamma" was introduced to allow for more flexibility in output
generation, namely to create output files with a different gamma
pre-correction or gamma encoding than the "Dispaly_Gamma".

Rather than having "File_Gamma" default to "Display_Gamma", it was
decided to have it default to the official recommendation for whatever
file format is chosen. Since this is sRGB for all modern file formats
supported by POV-Ray 3.6, and Display_Gamma would typically be set to
2.2, the difference is typically minute and was therefore considered
acceptable, especially since explicitly setting "File_Gamma" identical
to "Display_Gamma" easily achieves the traditional behaviour.

Post a reply to this message