You may want to try this (which I picked up from Computer Arts 38). Set up your tree exactly as you want it, filling as much of the frame as you can. Set the whole background (sky and ground) to black and light the tree. Then render it and save it with an alpha channel (PSD does this I think). Rotate the tree slightly and do it again. Then, bring in the pictures of the trees as a 2D object in Bryce - using the alpha channel to make the black parts of the picture transparent. Position and scale the 2D objects accordingly. Voila, complex trees which are exactly 1 polygon and which cast a shadow Paul