Is the tamron 70 210mm f 4 di vc usd good for sports?

Yes, for most sport. The Tamron 70-210mm f/4 Di VC USD sits in the range I'd suggest for sideline sport: 70-200mm to 100-400mm on full frame. The constant f/4 keeps it usable in dimmer venues, and the stabilisation helps when you're handholding.

It isn't a reach lens for birds, though. For that, see wildlife and sport.

On an APS-C body it frames like about 112-336mm (Canon) or 105-315mm (Nikon), which gives you extra reach for fast action. Good options from the fit list include the Canon EOS 7D Mark II and the Nikon D500. On full frame, the Nikon D850 and the Canon EOS 5D Mark IV are both solid partners.

Written by Claude from this site's pages.