I really didn't use it much. But, here is one of the very few pictures I took with it. It was never calibrated to my camera however, so this is an 'out of the box' shot. In my opinion my Canon 70-200 2.8 IS L takes comparable shots and is easier to carry around with me, but then it costs twice as much. The 100-400 will, of course, beat it hands down. I just happened to find an extremely good deal on a Canon not longer after I bought the Sigma.