Have used it with my D7100 to photograph squirrels. It is so sharp that it is good to cropped quite freshly. Image stabilization is very good. I have no problem taking pictures of 1/50s which is needed because it is difficult to keep such a heavy and long lens constantly.
The main disadvantages are that it is big and heavy and the zoom ring has very low gear. You have to twist quite a bit to get between the extreme positions which becomes a problem as you have to keep it in a steady grip with both hands.
Overall, however, an affordable option for those who need focal length of 200+