Yes, it features a dust- and splash-proof construction with a rubber seal at the mount to protect against environmental elements.
Yes, the Sigma 85mm f/1.4 DG HSM Art is fully compatible with Nikon Z-series mirrorless cameras when used with the Nikon FTZ or FTZ II mount adapter.
The lens requires a large 86mm front filter, which is necessary to support its wide f/1.4 aperture and high-quality glass elements.
While it lacks internal stabilization, its HSM motor is quiet and fast, making it excellent for cinematic portraits and shallow depth-of-field video work.