This lens is great for versatility--close up or far away, one very lightweight lens that does it all. No need to carry several lenses. However, it did not live up to my expectations as far as allowing me to adjust its focus quickly in sport mode; for instance, getting it to focus on birds deep in a tree or on ships as we are driving by on a bridge at 70mph, or on dolphins diving in and out of water, When it did focus, it took wonderfully clear shots; but trying to get it to focus in a hurry on what I wanted it to focus on, rather than on what it chose, was just not happening!