I've upgraded from my favorite Sigma 8-16mm simply for speed. (specifically for astro photo, astro time lapses and low-light video shooting) I've only taken this lens off my camera once since I got it three weeks ago and I've been shooting A LOT of photos. The focus is SHARP.

Great lens, haven't used it too much but did notice that the corners aren't tack sharp. But not a deal breaker for me. Used it mostly for astrophotography and some landscape so haven't been able to check the Bokeh.

Great value. Does exactly what promised.

Pretty awesome lens, I was worry about the 1,4 factor, but it is wide enough. Very happy about this

Everything we were looking for. High quality, great range. Thank you!

I love the sharpness and low light performance is great

As Abraham Lincoln once said when asked to endorse a mouse trap, "For the kind of person who needs such a thing, this is the kind of thing that person needs." In other words, a wide angle is a wide angle. That said, this one behaves well, feels solid, and has no obvious flaws. Well done.

Lens for landscape shooting with a wide angle. New, not heavy, hood included. Weak the chromatic aberration. Thank you.

Oh man. This lens is PHENOMENAL. I've had it for a couple months now, and it's my mainstay lens at this point. It's great for a ton of different wide-angle uses - architectural (interior & exterior), panorama shots, landscapes, and astral photography. Photo quality is top notch.

My new favorite lens in my arsenal. Sharp, wide, and affordable. Worth every penny.