You asked
Is the fujifilm xf 8mm f 3 5 r wr good for landscape?
Here is what the site says about that.
From Fujifilm XF 8mm f/3.5 R WR: Fujifilm XF 8mm f/3.5 R WR: A prime lens by Fujifilm for APS-C cameras, 8mm f/3.5. Specs - Maker: Fujifilm - Focal length: 8mm (prime) - Maximum aperture: f/3.5 - Made for: APS-C sensors - Mounts: Fujifilm X - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Fujifilm X): like 12mm on full frame; f/3.5 gives about the depth of field of f/5.2 there. Cameras it fits - Fujifilm X-E1: APS-C - ...
From Landscape: Landscape: Landscape photography is slow. The light does the work, the scene doesn't move much, and you can use a tripod. That changes what matters in a camera.
Quoted from this site's pages.