You asked
What is the laowa 6mm f 2 zero d mft good for?
The Laowa 6mm f/2 Zero-D MFT is a manual-focus prime for Micro Four Thirds. On that sensor it frames like a 12mm lens on full frame, so it's a wide, sweeping lens for landscapes, interiors and places where you can't step back. Its f/2 gives about the depth of field of f/4 there, which helps keep a lot in focus. Close subjects get exaggerated, so use it for foregrounds with some drama. There's no stabilisation and no autofocus, so it suits people who are happy to focus by hand.
It fits a large range of Micro Four Thirds bodies. For a compact, everyday pairing, try the OM System OM-5 Mark II, or the OM System OM-1 Mark II if you want the most capable body. For the aperture side of things, see Lenses: aperture and Focal length converter.
Written by Claude from this site's pages.