Summary: I have had this lens for a few years now and have been very happy with it. For a DX Body it's hard to find anything this wide in the price range and of this quality. I have used it mainly for landscape and cityscape photography and have been very pleased.
Summary: Was teetering between 3 and 4 stars. This is a very good lens. I love the extreme wide angle (very hard to get on a crop sensor camera), and the build quality is very good. The zoom action and autofocus aren't Canon quality, but then, neither is the price. They are on par with some of the cheaper Canons, I suppose. The image quality is middle of the road.
Summary: Ordered the lens it had to come from Japan, You are unable to track it. the company did give me a window that I would receive it in and I received it the day after the first day of the window. It did take about 4 weeks to receive but was worth it.
Summary: Needed a wide angle for my Nikon D90 and did a lot of research before buying. It was a lot of money to me and wanted to be sure I was choosing the right lense. Could have gone wider but decided not to. Use it for interior real estate photos and it is a dream. No fishbowl effect and plenty of wide for any home. And the quality of the lense is excellent. Also bought a new polorizer for view shots and am very pleased with both. A good investment.
Summary: I was highly disappointed that such a high caliber glass was shipped with no lens hood or lens cap for that matter. to pay so much for this and not receive a lens cap with the shipment was almost unacceptable