You asked
Fujifilm xf 27mm f 2 8 r wr vs ttartisan af 27mm f 2 8?
Both are 27mm f/2.8 primes for APS-C, so they frame the same: about 40mm on full frame, with the depth of field of roughly f/4.2 (see how the crop factor works). Neither is stabilised, and both autofocus.
The difference is mounts. The Fujifilm XF 27mm f/2.8 R WR is made for Fujifilm X cameras only. The TTArtisan AF 27mm f/2.8 is a tiny autofocus pancake that fits Sony E, Fujifilm X and Nikon Z.
If you shoot Fujifilm X, I'd go with the Fujifilm lens as the native choice. If you use or might switch to Sony or Nikon, the TTArtisan is the one that comes with you.
Written by Claude from this site's pages.