Sigma 200mm F2 DG OS | Sports (L-Mount)

Reviewers describe outstanding sharpness in the centre from f/2 with only a small drop toward the full-frame corners, very low chromatic aberration, well-corrected coma and astigmatism, and smooth backgrounds with round highlights from the 11-blade diaphragm. Autofocus is silent, fast and accurate enough for rugby and other sports. One lab measured about 4.7 stops of stabilisation, short of the 6.5-stop claim but among the best it has tested.

The practical drawbacks are weight and size for handheld work, strong focus breathing for video, a tripod collar that cannot be removed and closely spaced switches. It cannot be used with teleconverters. Flare is well controlled, with only a slight drop in contrast against the sun. Reviewers still see it as excellent value next to the old DSLR 200mm f/2 lenses, while noting it is a specialised single-focal-length lens.