Probably the most obvious change from the point of view of camera specifications is the change from a 6.3 MP sensor in the EOS 10D to an 8.1 MP sensor in the 20D. This means that the maximum image size of 3072 x 2048 of the 10D has increased to 3504 x 2336 pixels in the 20D. What people really want to know is what does this translate to in practice.



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