I had high expectations for this lens, but i can't say it's been as great as I thought it would be. The lens hunts a lot, it's just horrible. Picture quality is okay, but I had expected a bit better in comparison with the sigma 18-50mm "kit lens". The lens doesn't take that sharp pictures. And there is a good piece of CA on the img.
But it's not that bad, it's okay, really. And i really like the close focusing distance...