What are the alternatives to the olympus 9mm f 8 fisheye body cap lens?

Here is what the site says about that.

From Olympus 9mm f/8 Fisheye Body Cap Lens: Olympus 9mm f/8 Fisheye Body Cap Lens: A prime lens by Olympus for Micro Four Thirds cameras, 9mm f/8. A fisheye as thin as a body cap, with a fixed f/8 aperture and manual focus. Specs - Maker: Olympus - Focal length: 9mm (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 Four Thirds ...

From Your first camera: How to split the budget: Spend roughly as much on lenses as on the body, or more. A modest body with a great lens takes better pictures than a flagship body with a cheap zoom. A sensible first kit: 1. The body with its kit zoom, for everything. 2. A cheap fast prime, a 50mm f/1.8 or its APS-C equivalent, for people and low light. See lenses. 3. A spare battery and a decent memory ...

Quoted from this site's pages.