You asked
Sigma 85mm f 1 4 dg dn art vs zeiss otus ml 85mm f 1 4?
The Sigma is the easier lens to live with. It autofocuses and mounts on Sony E and L-Mount. The Zeiss Otus ML 85mm f/1.4 is manual focus only, so you'll turn the focus ring yourself. Its advantage is mount coverage: it also fits Canon RF and Nikon Z, which the Sigma doesn't.
Both frame 85mm on full frame and neither is stabilised, so the choice comes down to your camera mount and how you like to focus.
- Sony E or L-Mount, and you want autofocus: Sigma 85mm f/1.4 DG DN Art
- Canon RF or Nikon Z, or you enjoy manual focus: Zeiss Otus ML 85mm f/1.4
For more on choosing an 85mm for people, see portraits.
Written by Claude from this site's pages.