You asked

Is the sony fe 28 70mm f 3 5 5 6 oss good for landscape?

Here is what the site says about that.

From Sony FE 28-70mm f/3.5-5.6 OSS: Sony FE 28-70mm f/3.5-5.6 OSS: A zoom lens by Sony for Full frame cameras, 28-70mm f/3.5-5.6. Specs - Maker: Sony - Focal length: 28-70mm (zoom) - Maximum aperture: f/3.5-5.6 (it gets darker as you zoom in) - Made for: Full frame sensors - Mounts: Sony E - Stabilised: yes - Autofocus: yes What it frames like - On full frame (Sony E): as marked, 28-70mm. - On APS-C (Sony E): like 42-105mm on full frame; ...

From Lenses: Your first lenses: 1. A standard zoom, 24-70mm or 24-105mm equivalent. The kit zoom is fine to start. 2. A fast standard prime, a 50mm f/1.8 on full frame or a 33-35mm f/1.4 to f/1.8 on APS-C. Low light, people, food. 3. Then add for what you shoot: a telephoto zoom for wildlife and sport (wildlife and sport), a wide zoom for landscapes (landscape), or an 85mm for portraits (portraits).

Quoted from this site's pages.

From these pages