Olympus m zuiko 8mm f 1 8 fisheye pro vs panasonic lumix g 8mm f 3 5 fisheye?

Here is what the site says about that.

From Olympus M.Zuiko 8mm f/1.8 Fisheye PRO: Olympus M.Zuiko 8mm f/1.8 Fisheye PRO: A prime lens by Olympus for Micro Four Thirds cameras, 8mm f/1.8. A weather-sealed f/1.8 fisheye. Specs - Maker: Olympus - Focal length: 8mm (prime) - Maximum aperture: f/1.8 - Made for: Micro Four Thirds sensors - Mounts: Micro Four Thirds - Stabilised: no - Autofocus: yes What it frames like - On Micro Four Thirds (Micro Four Thirds): like 16mm on full frame; f/1.8 gives about the depth of ...

From Panasonic Lumix G 8mm f/3.5 Fisheye: Panasonic Lumix G 8mm f/3.5 Fisheye: A prime lens by Panasonic for Micro Four Thirds cameras, 8mm f/3.5. Specs - Maker: Panasonic - Focal length: 8mm (prime) - Maximum aperture: f/3.5 - Made for: Micro Four Thirds sensors - Mounts: Micro Four Thirds - Stabilised: no - Autofocus: yes What it frames like - On Micro Four Thirds (Micro Four Thirds): like 16mm on full frame; f/3.5 gives about the depth of field of f/7 there. ...

Quoted from this site's pages.