i believe you can print up to 5x7 on 1.3 MP without any degradation . . . my 2 MP camera does flawless 8x10's.

I ordered 20 photos, between 4x6, 5x7, and 8x10 sizes. Not only did Shutterfly want to charge me more than twice what Sam's Club did for the photos, but Shutterfly wanted $17.99 (?!?) to ship them.