Thanks to everybody

bagginsbill posted at 7:55AM Wed, 16 September 2015 - #4228500

You have too much light or too much diffuse Value on the skin. The result is that the right side is very over exposed. When the red stops increasing, the green and blue continue getting brighter and the skin appears yellow. In the region approaching that, the apparent change in hue makes it look excessively pink.

BB, yes you are right (like always) but skin color doesn't depends on the scene, in this scene there is the same V4.

Illumination with your sphere (all default settings ) and 1 infinite light set to 85%)

Skin is always too much pink, at least this for me.

Poser Pro 2014 SR 1 on Windows 7 64 bit
I use IDL, Gamma Correction and EZSkin for all final renders.