Thought I'd revive this thread with a couple of questions on BIG prints. I have a 30D (8.2MP: 3504x2332) and want to get a few prints made to frame on the wall. The math as follows, keeps the original aspect ratio for a picture @ [Xdpi]: 3504/[Xdpi], 2332/[Xdpi] = Width, Height (ex.5x7) Charting out the print quality table for a resolution of 3504x2332: @ 300dpi = 11.68 x 7.77 @ 250dpi = 14.02 x 9.33 @ 200dpi = 17.52 x 11.66 #1. If I want to get even bigger print sizes, how far can I go before seeing a big difference? I've heard of people going up to 16x24. #2. I am planning to upload my 50MB TIFFs to MPIX.com. Has anyone ordered thru them before?