The Nikon website has that information:
Any DX lens is for digital cameras only.
I am about to purchase a Nikon D50. I do not presently have, but anticipate buying a 35mm SLR in the near future.
I have heard that there are some lenses made just for the digital camera and others that can be used on both. Can someone shed some light on this? How do I know when I am buying? I am also unfamiliar with the classes of Nikon (Nikkor) lenses. I have not really gotten any good information in this area (ED/AF/DX...).
Thanks in advance...jj