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Message: <blockquote data-quote="Woodyg3" data-source="post: 425032" data-attributes="member: 24569">It will track the initial focusing point and not look for anything new to focus on, as long as you keep the subject within the focus point range within the viewfinder.  Well, you do have to keep your finger half depressed on the shutter release (or pressing the back button focus if you have your camera set that way) otherwise it will refocus. It's not perfect, but for moving subjects it's the best way I've found to get more shots in focus. 3D focusing uses color to aid in tracking, but in my trials it doesn't seem to work as well as regular 51 point.Some people think that using 21 points is better because the camera has less work to do and will track faster. I don't know if there is merit to that thought or not. And, hey, I'm just flying by the seat of my pants. This is what seems to work for me.</blockquote>