Yep, it does the trick and the flaws disappear. I'll use grayscale images from now on for they are a bit smaller too. Thanks. I tried to recreate the problem with a simpler model with less facets and it didn't happen so maybe it has something to do with file complexity. The file the problem occurs in has over 250k facets and 500 objects. As you can see from the picture there are a few objects in the scene and there are more details inside the cuckoo clock on the back wall. This is a scene of an animation where camera shoots first at the clock then glances around the room and finally flies in through the door of the clock viewing the inside of the clock. -Hannu Kulju