And just to show that I did set Gamma Correction to 1.0 in the render window here it is. And I could have done so in the material room as well but I did not because we are discussing the render window.

Maybe there is a bug and some peoples versions of poserpro2012 are behaving somewhat differently. Some people say they have beautiful preview screens - mine looked like crap until I fiddled with gamma. Others have reported similar.