Render the image to disk. Thant way you can select your resolution and your picture size as well. This seems to give you the best control over the render. Just like John said the image must be at least 150 dpi for print.I work in a print shop in MD and I have personaly rendered a poster from bryce at 600 dpi 24x36 and the image came out great when I printed it out on canvas on our HP 2500 Design Jet Printer. Happy Rendering Michael