Being new to Nikon I was wondering what other lenses can be used on Nikon cameras that were made for other cameras. What adapters do you use? I know Canon lenses are out of the question but what about Contax-Yashica, Minolta, Pentax Leica, Olympus OM, Rollei, etc. with an adapter. I had some very nice non-Canon mount lenses I used to use on my 5DmkIII and I'd like to try the same on my new D810.
I posted here instead of the lenses sub-forum because I'm really looking for recommendations on quality brand adapter(s) that others have used before, mainly M42 or C/Y to be specific, with their Nikon cameras.