After doing a lot of high-end Iris prints, I've learned the magic specs. They are simple to remember, and I'm happy to pass them on to you. For best results: Render your images 300dpi at half the size of the final print The largest print an Iris printer can create is 48 inches X 48 inches, so rendering you pics to be 24 inches X 24 inches @ 300dpi will always yield fantastic results. If the image isn't square just make sure the widest side is 24 inches and render at 300dpi. Any larger than this is a waste of disk space. I got these specs from one of the premier print shops in the world. They do a lot of museum quality archive work. If you can't render this big, render as large as possible and use a product like Genuine Fractals to bump up the resolution: http://genuinefractals.com/ This is a truly amazing product and has a free trial download that is unrestricted. There is just a limited number of times you can use it before you have to pay. Even if you do not intend to print that big, rendering your images at that size and archiving them to CD will ensure that you will be able to print or reproduce your images at any size in the future. You can always print them smaller. Cheers Bruce