This is an industrial type lens. It does not have a Nikon F mount, you will have to make one to fit. It has non-standard 48mm internal and 53mm external threads. It has no focusing ring. It has an f/stop range of f/1.0 to f/8. Focusing can only be achieved by changing the depth of field with the f/stop setting. The asking price is $3200. I think I will pass on this one. Lol...Jdeg, this one will work just fine with your D5000. The lens can't be focused any way so the lack of a built in focus drive won't matter.