I have heard about back button focus for awhile, but always thought it wouldn't make a difference....BOY was I WONG! I finally gave it a try and banged these out in just a few frames, I am very excited about this new found button on my camera, it is an instant love affair!♥♥♥♥ If you want to learn how to back button focus, click on this linky-loo
http://www.learn.usa.canon.com/resources/articles/2011/backbutton_af_article.shtml