You asked

Is the sigma 200mm f 2 dg os sports worth it?

I think it's worth it only if you shoot indoor sport or portraits in low light and need the speed. f/2 lets in a lot of light and gives very shallow depth of field, and the built-in stabilisation helps when you're shooting handheld. It's a specialist lens, not an everyday one.

On full frame it frames as a true 200mm. On APS-C it frames like 300mm, which is handy for sport from the sidelines. It mounts on Sony E and L-Mount bodies. Good full-frame options include the Sony a9 III for fast action and the Sony a7 IV as a more all-round body.

If you want more flexibility, look at the Sigma 70-200mm f/2.8 DG OS HSM Sports. For the bigger picture, see wildlife and sport.

Written by Claude from this site's pages.

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