You asked
Fujifilm xf 30mm f 2 8 r lm wr macro vs ttartisan 40mm f 2 8 macro?
Both are macro lenses for APS-C cameras, but they suit different people.
The Fujifilm XF 30mm f/2.8 R LM WR Macro autofocuses and is made for Fujifilm X bodies, so if you shoot an X-T5 or X-T50, it's the easy choice. It frames like 45mm on full frame.
The TTArtisan 40mm f/2.8 Macro is manual focus only, but it fits Sony E, Fujifilm X, Nikon Z, Canon RF, L-Mount and Micro Four Thirds. It frames like 60mm on full frame on most APS-C bodies, so you get a little more room from your subject. If you don't mind focusing by hand, it's the more flexible buy.
For a sense of how crop factor changes the view, see the focal length converter.
Written by Claude from this site's pages.