The autofocus is surprisingly quick, not that I thought it wouldn't be, but it performed quicker than I actually expected and producedgood results each time. For the following examples, I used spot focus and have provided the initial shot plus a 100% zoom on the focus area to allow you to see the results. The following images were captured at f/1.4 to see how the lens performed wide open, and for the purposes of this review, I simply enabled auto in Lightroom.