
Originally Posted by
Doug Brown
I think I understand what you're saying John, but I'm not sure I agree with it. Correct me if I'm wrong here. You're saying that if the projected image of a bird on a full-frame sensor measures 10mm, it will also measure 10mm on a 1.6 crop sensor. I agree with you on this point. However, you'll typically have quite a few more pixels on the bird in those 10mm with a 1.6 crop sensor than with a full-frame sensor (as you point out). When cropping, these extra pixels may well impact image quality. Also the bird looks bigger in the viewfinder making it easier to verify that the eye is sharp.