Nikon 50mm f/1.8 AF-D (older version, 2002-) Nikon 50mm f/1.8 AF (oldest AF version, 1986-2001) Nikon 50mm f/1.4 G AF-S (f/1.4 version, 2008-) Nikon 50mm f/1.4 AF-D (older version of f/1.4, 1986-) Ideal for: Perfect for use on FX digital, DX digital and 35mm film. On DX cameras, the viewfinder is usually at close to 100% magnification, making two-eyed shooting easy. Not for: Rich people who just don't feel right unless they pay a lot of money for something, or people who need no distortion, for whom the Nikon 50mm f/1.8 AF-D has less distortion for half the price. Otherwise, everyone needs some sort of 50mm f/1.8 and not much more. For More Details visit http://www.nikon.co.in/productitem.php?pid=1425-888e7f3a61 This Nikon 50mm f/1.8 G is Nikon's latest iteration of their classic 50mm f/1.8 lens, first introduced in 1978. This new version adds the first new optics since 1978, and upd...