I am a Ball State University student in a Digital Publishing class. We are working on the production of a cookbook that will be printed sometime this semester. Each page will be 8X10 Landscape, and we want to have some full-page images. The images we get from the photographer were taken on a Canon 30D camera with 8.2 mega pixels. When we open them in Photoshop they are 14.6X9.733 with a 240 resolution. We are producing on a 175-line screen. How far can we push the resolution and still maintain a quality image at a size of 8X10?