I wanted to try out the 16-300 on flights, so went off to the lake today. Unfortunately, it was gray and and flat and the birds seemed to be sleeping in. I did get one heron, but he was going straight out from me, so not to interesting a picture. That said, I was impressed with the focus speed of the lens (much faster than my kit 55-200) and the quality of the images, given the light. I think on a better day, I could get some real keepers.