The nikon 200mm f2 g ed af s nikkor vr ii lens is a top end pro quality lens that features the unique combination of a large f20 maximum aperture and nikons vibration reduction vr system for incredible low light performance various auto focus modes including af on af l and focus pre set can be controlled by buttons on the lens itself these functions along with the silent wave motor swm enable fast and quiet auto focus in any situation the nikon 200mm f2 g ed af s nikkor vr ii lens f