Lying on the ground so you get down totheir level, or lower, always makes for better shots of kids. One thing I havefound, when shooting my grandson it is like he is rocket propelled. He justdoes not stay still! To do candid shots I find it better to get a distance awayand use my 70-200 rather than get in close with a shorter lens. You get abetter perspective that way and their running around does not affect the shotsas much.