You asked
Sony fe 85mm f 1 8 vs yongnuo yn85mm f 1 8 df dsm?
On a Sony body, the Sony FE 85mm f/1.8 is my pick. It's the portrait lens I'd tell you to buy first on Sony full frame. It's made for Sony E and has autofocus, but no stabilisation.
The Yongnuo YN85mm f/1.8 DF DSM has the same focal length, aperture, and autofocus, and it also has no stabilisation. Its advantage is mounts: it fits Sony E, Nikon Z, and Canon RF. If you shoot Nikon or Canon, it's the one of these two that works for you.
Both give the same framing and background blur on full frame. For the kind of shot this lens is for, see portraits.
Written by Claude from this site's pages.