Bests & Worsts Reviews from Amazon

Build Quality: The lens is well constructed and relatively small. The lens mount is metal and the front of the barrel and the focus ring is plastic. It has a 67mm filter thread; my UV filter fits nicely and looks good. The aperture ring is a little small, but provides nice clicks with half stop adjustments. The aperture and focus rings are well-dampened, needing both fingers to turn. Close focus is a little less than .66m and it focuses a little past infinity, but there is a mark for infinity. The lens hood is a little cheap and also has a little play when mounted. Overall, the build quality is good and it would handle rough usage. Performance: The lens performed very well for my uses. I'm only going to shoot landscapes and nightscapes with this lens. The center is sharp at F/2.0, peaking at about F/5.6. The corners are a bit soft wide open, but sharpen up dramatically at F/4.0. When focused to infinity at the stars, the corners were surprisingly good wide open. The coma was well controlled too. It can do up to a 25 second exposure without getting star trails. There is little distortion, and there shouldn't be a problem fixing it in post. It has strong vignetting at F/2.0, but improves at F/2.8. Overall, it has excellent performance for a $400 lens. Other Thoughts: I set the C2 button on my A6000 to magnify so that it's easy to focus. It feels well balanced and is only a little heavier than the Sony E 50mm F/1.8. This lens is very aesthetic and looks even better on a black camera. Update March 2016: I use it primarily to photograph seascapes and for night timelapses. It's been splashed by ocean waves many times and it's still going strong. Compared to other wide angle lenses, this one is very small and light. It's perfect to take hiking if you want to bring the minimal amount of gear. I use a Tiffen 3-stop ND filter for shooting waterfalls and the ocean.