You asked

Is the sigma 70 200mm f 2 8 dg dn os sports good for wildlife?

It's a good pick for wildlife if your subjects are close enough. On full frame it covers 70-200mm at f/2.8, and it's stabilised and autofocuses, which helps with animals that move. Its reach is the limit. On an APS-C body like the Sony a6700, it frames like 105-300mm on full frame, which gives you more distance without changing lenses.

For small or distant animals, you'll want more reach. The Sigma 500mm f/5.6 DG DN OS Sports is a comparatively light prime made for wildlife. For the bigger picture of what to look for, see wildlife and sport.

Written by Claude from this site's pages.

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