Nice lens that's no longer produced. Used to cost way less when it was still under production than it is nowadays. Fast lens that does amazingly well when shot wide open or close to it. The seller is still asking too much for it though; $3.5k is the highest that I've ever seen anyone try to sell one. They're usually hovering in the $2-2.5k range. I would rather wait and see what Nikon does with lenses.