You asked
Ttartisan 100mm f 2 8 2x macro vs laowa 100mm f 2 8 2x ultra macro apo?
The two lenses are very close on paper. Both are 100mm f/2.8 2X macros for full frame, both are manual focus, and neither is stabilised. On APS-C they frame and blur the same way, so the choice comes down to your mount and what you want to do.
If you shoot Fujifilm X, the TTArtisan 100mm f/2.8 2X Macro is the only one of the two that fits. It also comes in a tilt-shift version. For Sony E, Nikon Z, Canon RF, L-Mount, Canon EF or Nikon F, both lenses fit, so pick on availability and price. The Laowa 100mm f/2.8 2X Ultra Macro APO is the one to check first if you're on one of those mounts.
Not sure which mount you're on? Start with the gear catalogue.
Written by Claude from this site's pages.