This is a great little lens! I used this extensively on my 2013 safari to Namibia and I got some awesome landscape photos with it in a variety of situations.
The biggest strength of this lens is the fact that it is so small. It weighs next to nothing and is collapsible, so it takes up very little space in a bag. You have to purchase the hood separately and its one of those square types that isn't reversible on the lens, however, because it's so shallow this isn't always a problem.
I find it very sharp and contrasty throughout the range. I highly recommend getting one if wide angles are your thing. However since I obtained this lens there have been a couple of alternative ultra wide angle zoom lenses that have emerged from both Panasonic and Olympus which out perform it.
For interiors and architectural work there is a significant amount of barrel distortion which isn't automatically corrected when using the built-in profile in Lightroom. I still have to apply a manual distortion correction of +12 to get lines on the edge straight (Lightroom).
Edited by Dallas
Mass (g): 155
Length (mm): 49.5
Filter (Ømm): 52
AOV ˚: 100-62
Min. Focus (mm): 250
Rating (1-10): 8