Yeah, I thought it was a PS thing. The angle of the logo would not work well in PS unless I use a bryce image there. That's why I was thinking that a quick render with white cup texture would let me mask the angle etc, in photoshop and invert the mask for alpha channel. Then layer on the glass render. Ok, I can do this postwork. The more I think about it though, the more I wonder if the reflections of the logo add substance to the image. Its just that the real glass has two logos on opposing sides and for some reason, they don't reflect and interact like this render does. I'm almost done with a 9 hour render and will post in a few. (last night's render was disappointing this morning cuz it shifted to parametric instead of object face for some reason and screwed up the logo).