Canon 100mm Macro - KenRockwell.com: Photography, Cameras and Taking Better Pictur

This will be even better on an ordinary 1.6x camera since only the middle of the frame is used. On these popular cameras, there is a little falloff at f/2.8 at infinity, and it's gone completely by f/4. There is none at 1:1, even at f/2.8! Even if it were

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