It is unusual at first to see the world through a super wide angle, so far I had only a standard and a fixed focal length, which is pretty much the opposite. If you have however seen landscapes and roads once by 10 mm, no longer wants to desist. Wonderful! This width and how much you get to a single photo, a camera beginners a great thing. It's not my Most-Used lens because it is not suitable for every motive, but everyone should have as a super-wide-angle home.
The workmanship is good, for me it has arrived safe and without errors. It's quite hard, but you get used to very quickly. Appropriate and safe for the price not bad buy. For all those original Canon are too expensive, but which nevertheless do not want to miss a big wide world.