Upload & Sell: On
I'm just starting to perform a comparison myself. Here are two images of a focus chart at close distance using a Sigma 70mm macro, which is one of the sharpest lenses around. Both shot tripod, 3-second exposure delay (MLU), raw, sharpened to 35/35/.08 in LR4. Four images taken with each camera, sharpest from each selected for this comp.