I'm almost afraid to ask... Recently, in another thread, Chris (Aqualung) suggested to me to try the AF-ON button of my D200/MB-D200. He also pointed out a 15 page thread about its use. I read those 15 pages and, frankly, I don't get it. I don't see its value for sports shooting. Well, at least not for me. The last two soccer games I've used it. All I really did was hold the AF-ON button down with one finger and shoot with another. The MB-D200 makes it pretty easy to keep the shutter trigger partially depressed to keep AF-C going. So... Do you use it? Why? What am I missing? Anything? Or is it just a preference kinda thing? I'm afraid I might be missing a key point about its use. Maybe one of you will help me 'see the light' so to speak. :smile: Thanks.