The above shot is a grab. I was walking along the Quayside in Newcastle upon Tyne and saw this, quickly raised the camera up and click - a sharp image thanks to the quick response of the autofocus system.
During my years as a photography student i hated autofocus but i must admit that I've come to love it now. I don't always use it when taking images and some of my preferred lenses are the older metal constructed Nikon manual AI/AIS Nikkor lenses but autofocus is part of my photographic world. I'm glad it is. Without it i doubt that I'd have got this shot. i just wouldn't have been able to focus in time.