Any smooth curves on terrains derived from images show steps where they should be smooth, or rather where i would like them to be smooth. As an experiment try a render of a sphere with default grey mat on a grey default ground from above. Save the image and bring it in to the TE to drive a terrain. The curve of the sphere will be stepped no matter what res terrain you try. bsmooth sorts this for it's own constructions which come in v smooth but not for imported images so Am not sure how to proceed, I was hoping to import some groovy Mojoworld terrains into Bryce as greyscale images. it exports at any res you like, but they get stepped to hell. . . sigh. . . J