Well, it’s everything I had hoped for but unfortunately a bit more.

First the great: it’s relatively small so it’s convenient to carry in a bag or pack. It’s as sharp as you could ever hope, autofocuses quickly, and the VR is spectacular (shooting at 1/6 second, I’m getting nice, sharp images). It’s a great all-around ultrawide, and it’s ability to take filters gives it an advantage over even the legendary Nikon 14-24mm f/2.8G ED AF-S.

There’s a downside though: at 16mm the barrel distortion can only be described as “nearly fisheye.” It’s much less at 18mm and gone by 20mm. Barrel distortion is, of course, easy to fix in Photoshop or your image processor of choice, but this needs to be mentioned (and perhaps demonstrated below.) The corners are soft at the wide end at 16mm and the lens is a bit soft at 35mm.

How important this is will depend on what you’re planning to shoot and if you’re willing to spend some time postprocessing the images. I don’t shoot a lot of buildings, so it won’t bother me much, but I wouldn’t recommend this lens to someone who’s going to shoot a lot of architecture.