Well these lenses work for a Nikon Cool Pix L810? Or if it doesn't then which fish eye lenses would you think will work?
I am not familiar with the Nikon Cool Pix L810. I have a Canon EOS 60D DSLR. To use the lens I needed an adapter between my Canon bayonet mount and Lomography lens mount. I believe there is an adapter for Nikon DSLR mounts, but I am not sure if there's one for the Cool Pix L810.
BTW: I am less than satisfied with this lens. After I bought it, I read a review that said since it was designed for medium format cameras, the fish-eye effect won't be as noticeable with smaller format cameras. I haven't used it very often, haven't shot more than a couple of pix, actually. But I don't notice ANY fish-eye effect. Even with the added cost of the adapter, though, it is cheap enough that it was worth a try.
I may spring for a Diana+ camera to try the lens with real film.