Is the sony fe 100 400mm f 4 5 5 6 gm oss good on aps c?

Yes, I think it's a good match for APS-C. On a Sony APS-C body it frames like 150-600mm on full frame, which is plenty of reach for most sport and wildlife. The f/4.5-5.6 aperture gives about the depth of field of f/6.8-8.4, so the background blur is a bit less than on full frame. It's stabilised and autofocuses, and it fits every Sony APS-C body I list, including the Sony a6700 and the Sony a6400.

That's the best-value reach there is, as I say on wildlife and sport. If you buy it, buying used can save a lot.

Written by Claude from this site's pages.