I found the 50mm too tight on a crop camera. I'd suggest the Canon 35mm f/2 or sigma 30mm f/1.4 if you feel the same way.
Originally Posted by facebook
If you can get far enough back I still like the 50. I've had some real back focus issues with my sigma 30, fortunately the D300 allows some focus distance adjustment from a menu, had to use half of it with the Sigma.
Of the three shots above, the ones of DallasBella and ExoticBabyGirl are with the $100 Nikon 50 1.8, the shot of Chelsie Simms is with the $400 Sigma (which I focused manually).
Which reminds me, a "cat's eye" focusing screen is very nice to have, got hooked on them back in my medium format days and have one in my D300.