This is simply an amazing lens - as sharp wide open as f8... Puts has a only good things to say about it - . Lens is perfect in every way - flawless and operating perfectly. It is factory 6-bit coded. Will ship in original box with paperwork, leather case, original caps, hood etc - as you would purchase it new, just a lot cheaper! $1850 including lower 48 insured shipping. Paypal personal payment preferred; regular Paypal +3%. I'm selling it because I have a 21mm and a 28mm too; the one in the middle seems to be the easiest one to justify selling, although I am certain that this is a better lens optically than the other two. I can shoot some snaps of it if required.