Summary: I was initially very impressed with the size and build quality of this lens. It just felt very stable. The more I used it, however, the less impressed I was. I found it hunting for focus too much and was slower to lock onto an object than my kit lens. It was quiet, but in low light conditions, especially, it just wouldn't autofocus in time for me to catch the shot I was after.
Pros: Consistent Output, Durable, Rugged, Strong Construction