You asked
Best camera for the sony fe 70 300mm f 4 5 5 6 g oss?
The 70-300mm is a full-frame lens, and it fits every Sony E body on its catalogue page, so the best pick depends on what you shoot.
For one camera that does most jobs, I'd go with the Sony a7 III. On full frame, the lens frames exactly as marked, from 70mm to 300mm.
For fast sport and action, the Sony a9 II is the one I'd reach for. It's full frame, so the lens works as intended.
If you want more reach for less, the Sony a6700 is worth a look. On APS-C this lens frames like 105-450mm, which helps with birds and distant subjects, and the kit is smaller.
For more on what long zooms can do, see Wildlife and sport.
Written by Claude from this site's pages.