Is the sigma 100 400mm f 5 6 3 dg dn os contemporary good for sports?

Yes, for a lot of sport, with a caveat. On full frame, 100-400mm is in the range I'd suggest for sideline sport and larger animals. It's stabilised, has autofocus, and fits a long list of Sony E, L-Mount and Fujifilm X bodies. On APS-C it frames like 150-600mm, which gives you plenty of reach for sport.

The catch is the aperture. At f/5-6.3 it gets darker as you zoom in, so indoor sport or dim evenings will push you up in ISO. If you need more reach for serious sport, look at the Sigma 150-600mm f/5-6.3 DG DN OS Sports. For the wider picture, check my picks in Wildlife and sport.

Written by Claude from this site's pages.