@cameraclicker… Thank you for that test idea. I will definitely have to try it. And also @sarah, glad you have made a large print with the 40D. I have a client who wants a large print and from viewint the image at 100% in Photoshop I told them that a 20×30 would probably be the largest that would not be pixelated and your discovery solidifies that. And cameraclicker, you touched on this also, but another advantage of a full frame is that with a longer lens you can be closer to the subject and still get a compressed depth of field, minimizing the possibility of camera shake, and allowing for greater detail and sharpness. With my 70-200 f/2.8 on my crop bodies I have to back up aways to get everything in the frame that I want to and sometimes it results in a softer image. The 5D should help a lot with that.