The Nikon 50mm f1.4 G is simply fantastic. Both f1.4 versions will do a bit better than the 1.8 wide open. However, the f1.8 is no slouch..it is one of Nikon's best. If you are wishing you could run a faster shutter speed (not quite half) and you find the 50mm focal lengh ok, then the 1.4...