Can you please post a picture of the back of the lens where it fits to the camera? It would help a great deal if we could get an idea if it will fit our cameras or not. Thanks!
If this is a Nikon AF lens it will not auto focus on new cameras, It appears to be an older lens which means it's probably an AF lens, Newer Cameras like the D5100-3200, D7000, etc. use the AF-S lenses to auto focus