Olympus 15mm f 8 body cap lens vs laowa 17mm f 1 8 mft?

Here is what the site says about that.

From Olympus 15mm f/8 Body Cap Lens: Olympus 15mm f/8 Body Cap Lens: A prime lens by Olympus for Micro Four Thirds cameras, 15mm f/8. A lens as thin as a body cap, with a fixed f/8 aperture and a manual focus lever. Specs - Maker: Olympus - Focal length: 15mm (prime) - Maximum aperture: f/8 - Made for: Micro Four Thirds sensors - Mounts: Micro Four Thirds - Stabilised: no - Autofocus: no, manual focus What it frames like - On Micro ...

From Laowa 17mm f/1.8 MFT: Laowa 17mm f/1.8 MFT: A prime lens by Laowa for Micro Four Thirds cameras, 17mm f/1.8. Specs - Maker: Laowa - Focal length: 17mm (prime) - Maximum aperture: f/1.8 - Made for: Micro Four Thirds sensors - Mounts: Micro Four Thirds - Stabilised: no - Autofocus: no, manual focus What it frames like - On Micro Four Thirds (Micro Four Thirds): like 34mm on full frame; f/1.8 gives about the depth of field of ...

Quoted from this site's pages.