I read many reviews from the internet that this lens is very soft wide open on every focal length. Well, glad to see that the lens I bought did not exhibit such issues.
The image below (click for full size) shows good center sharpness however softness exist on the edge. Barrel distortion is virtually none.
Image below show sharpness from edge to edge when stop down further.
Another picture at wide open focus at the lowest sign, still pretty sharp.
Wide open at 35mm.
Very satisfied with this lens with a price more than twice cheaper than the Nikkor 16-35mm VR F4. This lens has far better barrel distortion control than the Nikkor equivalent.
Images shot with Nikon D600. No digital imaging sharpness applied, some horizontal correction with highlight and shadow adjustment.
This is the final game of the King Cup 2013 between the reigning champion Kelantan and Johore. The result end up with a shocker, Johore come from behind to clinch the victory with the score of 31-26.
All images captured with Nikon D600 + Nikkor 70-300mm VR.