Yes, isn't it ALL about catching the right moment? Being ready at all times! Most of the time outside, I like to shoot with very little depth of field to get a very non-distracting background and keep the attention on the subject. One of many advantages of a plain background in the studio is that the depth of field becomes less of an issue. I really like the freedom of more depth of field. It sure increases the possibility of getting a sharp image in a sudden situation like this one, shot on a Canon 1d Mark II at f.8 200 ISO Canon 70-200mm 2.8L at 75mm. Enjoy the new year :-)