Quote - IS:

Are you using GC shaders with IDL? I haven't tested extensively, but I think you really can't. The data that GC shaders reutrn is for how to make that luminance on a screen. For light measurement purposes, those numbers are way too high. That would cause over-exposure for sure. That's why linear rendering is so important.

With Poser 8 and IDL, dump GC shaders altogether. Use linear output only from shaders. Make sure all diffuse calculations throw less light than arrives (Diffuse_Value < 1). Use HSV Exponential Tone Mapping at 2.2 for the final adjustment (approximately) to sRGB color space.

if we dont use IDL and only normal IBL and AO we also shouldnt use GC on shaders?