Summary: I bought this lens mostly to photograph wildlife and I have taken some great shots with it in the short time I have had it. The lens is light weight and easy to carry around in the field for long periods of time without causing fatigue. The IS is amazing and I can shoot without using a tripod in low light and still get clear, crisp photos. I have only used the lens in the auto focus mode and I couldn't be happier with it's performance.
Pros: Consistent Output, Easily Interchangeable, Lightweight, Rugged, Strong Construction