Anton, I've got 5 pizza maps (1024x) and 3 others. At 16-bit, they're around 6Mb each. If I use 8-bit for the P6 version, they're smaller, of course. I've also been using a small amount of displacement on the walls and wooden beams, but the original texs are 2048x, so instead of converting them, I tried the original texs. For most scenes, these actually look fine, although I'm still doing tests on that. I haven't had time to try it yet, but I seem to remember that there's a P6 node to convert RGB to grayscale, and I wanted to see if that made a difference. I'm already using a Color_Math node to set the zero disp value to RGB 128/128/128. I'll need to do a few more tests before I decide on the final format. mac