I do not know but I going to the bryce forum and ask them someone may know. I did blow up two images I did in bryce. When I render in bryce it will save at 72dpi and what ever size up put it on; oh it saves it in bitmap. Now this week I learn you can take the image and go to files and click on render to disk you can put the size you wish like 18x24 at 300dpi. the two image I had printed had no noise. It was render at 840x630 at 72dpi then I put it in Digital Image Suite # 9[a photoshop type program] I made a new blank canves then I click and drag the image I wish to get to 300dpi and move the edges to the size I wish then click on ok. It kink of float there so you can move it around and all. This will make it 300dpi with out going to image imlargement.

what you see is not what you know; it in your face