You asked
Is the sony fe 20 70mm f 4 g good for video?
The Sony FE 20-70mm f/4 G is a sensible video lens, with a few caveats. On full frame its 20mm wide end matches the roughly 16-20mm full-frame equivalent that vlogging setups call for, and it autofocuses. It's not stabilised, so you'll want stabilisation in the body or a steady rig. It's also f/4, so it won't blur the background as much as a faster lens.
Pair it with a video-minded body such as the Sony ZV-E10 II, the Sony ZV-E1, or the Sony FX3. Whatever you choose, budget for sound too. Read the audio section before you buy the lens.
Written by Claude from this site's pages.