http://www.nikonchat.com/nikkor-f1-8-50mm/

Can a Nikkor 50mm f1.8 lens age for work on a film SLR nikon d3000 DSLR?
Can a 50mm Nikkor f1.8, manual focus with age (Type D) the objective of a job on a film SLR Nikon D3000 DSLR?
Not in any of the entry-level cameras such as the D3000, D5000, D40 or D60's. So you need a more advanced camera to the D70, D80, D90 or better. His D3000 was designed to use only the latest AF-S and AF-I, because photographers usually are building their new camera systems from the ground and have no legacy lenses. So one of the entry-level cameras are so affordable. This has nothing to do with whether the lens can be used in a film camera or not. All Nikkor lenses can be used on Nikon 35mm cameras. DX lenses provide some cartoons, of course, but can be used. Enjoy what you have and get to the point where you can get great photos without having to think about it, in all aspects automatic and technicians are spending all his time composing your shots. In the composition http://photoinf.com/General/Robert_Berdan/Composition_and_the_Elements_of_Visual_Design.htm
Nikon D90 + nikkor 50mm F1.8 video + iMovie