You asked
Is the sony fe 28 70mm f 3 5 5 6 oss good on aps c?
It works on APS-C. It's a full-frame lens, so on an APS-C body it frames like 42-105mm, and f/3.5-5.6 gives roughly the depth of field of f/5.2-8.4. That's a bit tighter than the standard zoom I'd suggest for a first lens, so it suits portraits and subjects at a distance better than wide scenes.
Sony's APS-C bodies in the catalogue that take it include:
If you want something wider on a crop body, check my first lenses picks, which suggest a 33-35mm prime for APS-C.
Written by Claude from this site's pages.