Excerpt: I did some research before buying a wide angle lens. Not wanting to spend a fortune for a lens that I won't use too often, I am very pleased with the quality of this product. Best quality for the price!
Pros: Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight
Summary: I've been looking to buy a fisheye lens for a long time, but could never justify the price for something that doesn't get used all the time.I'm a full time sports photographer and want to use the lens for those special shots that come along every so often.
Pros: Durable, Great Features, Great Picture Quality, Simple Controls
Summary: Superb value and great results - just what I was looking for. Lovely fish-eye curves and good quality pictures. I was concerned it may be too cheap, but very pleased with it so far.Used with a Canon 7D.