Excerpt: Fast shipping. Great lens, good picture quality, autofocus , and it give you good light. It a good invest to use with it a good software to correct the distorsion. I work with a all lightroom, the result is very nice.
Pros: Fast / accurate auto-focus, Lightweight, Strong Construction
Summary: I bought this lens to use underwater with an aquatech housing and shoot surfing photos. I haven't had a chance to use it much yet but from the few times I used it, the only down side to it is the focusing speed.
Excerpt: Well. so far there isnt anything wrong with this lens. hard to keep clean. i wouldnt say its 180 degree view. maybe 165-170 degree? not a big deal for me. its enough. its a lot less wide (physically) than i thought (from the picture), so in a way its a little more compact than other lenses.
Excerpt: In the limited time I have owned this lens I have used it only once. I acquired it because I capture a lot of museum displays, of large objects in cramped spaces and I expect that this lens will supplement the angle of view of my 10-24mm conventional lens.
Pros: Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight