Audity: First of all, I didn't say that the material was defective. My exact statement was "a picture that is clearly defective" -- If you wish to quote somebody, please quote them accurately. I still believe that this image generated by Vue 4 is defective. So until somebody shows me a location on this planet where the water has wavy lines in it, I will continue to believe that. After considering what you have said, I probably should change my statement to "VUE ITSELF IS DEFECTIVE!" because NOW I don't believe that it is the material either. (see the image above) This is the bump production function of the "Default Water" in my version of Vue. It sure don't look much like yours, and I don't see any isolated massive "spikes" in the procedural values themselves that might indicate a hard line in the material generated. In addition, I believe that Vue generates other "artifacts" (for lack of a better term) when it renders pictures - for example, the strange behavior of the lighting in lgp692000's example, which I believe is a related problem in Vue, which is not easily dismissed by laying blame on the material. I believe that these artifacts are produced by the rendering engine (probably an unwanted "harmonic" or "rounding error" of the procedural function caused by mathematical sloppiness), and even though they may be "masked" by altering the materials, the fundamental flaw of the engine itself is still there. If this were not the case, I think e-on would have fixed it if they could, but altering the "core" of the program itself would just be too difficult and costly. Sorry if I burst anyone's bubble or stepped on any toes, I just call them the way I see them. I like Vue well enough to use it occasionally and give it another try, but I haven't the patience to fix in post the flaws generated by a program which I paid several hundred dollars for.