This is my cat,Little Man,being chased by Jack,one of our other cats. The AF-S focusing system took care of the focus while I grabbed the zoom ring and got off this one shot as he ripped by me from about 10 feet away.It is in focus,and there's one little tiny spot where he's not actually moving. An interesting panning shot with VR enabled. The automatic focus of this lens is very much faster and more positive than the 80-400VR,even on the S2.This is the eleventh photo I took with this lens--not the five hundredth or the six-thousandth picture with it.