First of all- is Bryce a bitmap or a vector program? (I'm not familiar at all with Bryce) That can make a HUGE difference. Vector images are based on arithmetic calculations & can be blown up with no noise or pixelation. While a bitmap image uses pixels- the larger you make that image- the larger you make the pixels. Some programs work well when you enlarge the image with the pixels- but a vector image (which is never a photo) wouldnt need it.