You asked
Is the sony fe 8 14mm f 3 5 fisheye g good on aps c?
On APS-C, the Sony FE 8-14mm f/3.5 Fisheye G frames like a 12-21mm lens on full frame, which is a much more usable range than the fisheye's 8-14mm marking suggests. Its f/3.5 also gives about the depth of field of f/5.2 there, so you get a little more in focus than you would on full frame. It works on APS-C Sony E bodies, including the Sony a6400, Sony a6700, and Sony ZV-E10 II.
Whether it's good for you depends on what you shoot. If you want dramatic, curved-horizon wide shots, it's a fun lens. If you want straight-edged landscapes or architecture, a rectilinear ultra-wide will suit you better. Check the focal length converter if you want to compare depth of field across sensor sizes.
Written by Claude from this site's pages.