On 21-3-2018 14:07, Ive wrote:
> Am 3/21/2018 um 13:11 schrieb Thomas de Groot:
>> I agree for the vegetation, maybe the wheel, not really for the 
>> bricks. However, my question would be: where does over-saturation come 
>> from?
>>
> Gamma! In the ancient time of MegaPOV and its unawareness of gamma 
> handling you as the user had to tweak scene colors and lighting to 
> compensate for the resulting inconsistency. Now with proper gamma 
> handling but some of these *tweaks* making it over results in 
> over-saturation and slightly hue shifts - as to be expected.
> 
>> It is strange. The original is - imo - strongly under-saturated.
>>
> Yes, I agree - saturation is certainly also a matter of taste - 
> personally I can live with under-saturation better than with 
> over-saturation.

Then the short answer is clear: My latest scene version using 
exclusively sRGB gamma all through (and gamma 1.0 where necessary) the 
apparent over-saturation is solely due to the original hue of the used 
image_maps. I can live with that although I prefer a slightly 
less-saturated version; it might me make to consider to tweak the 
original images to a "lighter", "flatter" hue, or to apply a colour 
transformation within POV-Ray.

> 
>>
>> Hmmm... I don't know how to achieve that...
>>
> 
> Contemporary versions of Photoshop and Lightroom do this auto-magical, 
> older version if you told them to do so and I'm under the assumption 
> this is also true for other software like Gimp or Paintshop. I do not 
> use the latter so maybe I'm wrong?
> 

I am using Gimp and have not (yet) found thematter. Does your IC do it 
by the way?

-- 
Thomas

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