Thanks for the review. I was waiting for it very much. I own kit 18-55, nikkor 55-300 and Sigma 17-50 which I bought just several weeks ago. Also was looking for new Sigma 17-70 and 18-35 but 17-50 looks like a good compromise and already available in local market. Also very interesting looks new 18-140 but high level of distortion is confusing.