Originally posted by dbaird Higher pixel count can on a given size sensor and actually down grade the image quality at f11 or higher, due to defraction. So more mp does not automatically mean a better camera/image.
That's not true. Higher resolution on a sensor means you can't stop down much if you want to enlarge/crop a lot. Which you can't do with lower resolution sensors anyway, so where's the loss? Also, f/11 is an arbitrary number here. It depends on "sensor" size (and how much the final image is to be enlarged and at what distance you look at it) and lens design. Quality will degrade with higher sensor resolution if the pixels turn too small, but due to other reasons.