Quote - It's even worse, the first anti-GC part of the sandwich does not work on all numericals.

The User Defined node takes numericals, no actual colors involved.

But also the 50% white (=grey) Diffuse color at 100% value works different from the 100% white at 50% Diffuse value, as only the color swatch is affected.

So for simplicity: Poser GC reduces the contrasts and extremes of highlights and shadows (and other shading), but not color as such.

So I'm confused. Say I use a brick node. Do I have to worry about anti-gamma correcting the values I use for the colors?