You asked
Is the 7artisans af 10mm f 2 8 good for landscape?
Here is what the site says about that.
From 7Artisans AF 10mm f/2.8: 7Artisans AF 10mm f/2.8: A prime lens by 7Artisans for APS-C cameras, 10mm f/2.8. Specs - Maker: 7Artisans - Focal length: 10mm (prime) - Maximum aperture: f/2.8 - Made for: APS-C sensors - Mounts: Sony E, Fujifilm X, Nikon Z - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Sony E, Fujifilm X, Nikon Z): like 15mm on full frame; f/2.8 gives about the depth of field of f/4.2 there. ...
From 7Artisans AF 10mm f/2.5: 7Artisans AF 10mm f/2.5: A prime lens by 7Artisans for Full frame cameras, 10mm f/2.5.
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