I am working with the ShowZBuffer comand in version 4, to produce grey scale heightfeild images of simple forms. I have noticed differences in the image quality it produces. Some times I get a more blured image with more levels of grey and some times a sharper flatter image. I tried to figure out why this was happening and I noticed as in the pics posted that a mesh of the object will give the more blurred image and the original polysurface will give the flatter version. The strange thing is this is not always the case! and some times (more often than not) I cant produce the blurr type image with the more shades of grey that I prefer. I only run the command with the one object visible on the screen. I have plugged away at this for a while but cant figure out what is going on. Any one have an idea ??? Thanks!!