Maciej Latałło has just posted a full review of the newly released Sigma 70-200mm F2.8 DG OS HSM Sports lens (Amazon/ B&H/ Adorama) at the Lenstip.com. He tested this new lens on the Canon EOS 5D Mark III and finds many Pros: solid, sealed and stylish casing, excellent image quality, lack of problems connected to longitudinal chromatic aberration, slight lateral chromatic aberration, moderate distortion, properly corrected coma, not bothersome astigmatism, nice out-of-focus areas, silent and accurate auto-focus, good cooperation with the 1.4x teleconverter. Read More »