It's an old Soviet 16mm film projector lens adapted to a different vintage lens's helicoid then adapted to Micro 4/3.
It's a 50mm f/1.2 lens and it takes some weird photos. It's not perfect (especially if the area is well lit) but it takes some interesting photos with a little practice.
Edit: And being a lens made for 16mm film it takes pictures just like a normal micro 4/3 50mm lens would.
Here's a link to a small album of some shots I can share made using the lens. The shots with multiple minis in it the minis are at most 6 inches apart.
I'm currently in the process of putting a bunch of my pictures on my Deviantart‡ account, I haven't done a lot yet because I don't want to flood it all at once but it's a slow process of uploading.