Summary: Fast delivery. Good lens to have. Wish it was auto focus with the chip inside but it's just fine for video. Got it for my 60D, Wish it was a bit more wider but you will learn to find the angles to make it really pop/fishy during video. Excellent lens.
Excerpt: Lets be honest, at this price, this lens is tough to beat. I did some quick comparisons vs. my Canon 17-40, and this lens was sharper. It seems well built and isn't overly heavy. The question is: are you are willing to deal with the manual operation of everything about this lens and the annoyance of focusing.
Pros: Great Optics, Great value, Professional Quality
Excerpt: I did a lot of research before I bought this lens. I read every review here on this website as well as some others. I took the chance and purchased it. This lens fits my personality. I really like that aperture and focus have to be done with your hand. A simple click of the aperture ring and then adjust focus. If you shoot in aperture priority mode, then you can choose aperture and just pay attention to focus.
Pros: Cost Efficient, Easy To Use, Very Good Quality
Excerpt: I wanted an in expensive lens since i would only be using it for glidecam shots. The lens is too wide, and gives a warp look on the edges. This is also a manual focus lens and I prefer shooting with auto focus.
Excerpt: After reading a lot of reviews and testing a lot of lenses. This is one of the very best options for Canon users to shoot sharp wide angle Milky Way photos at any price. I was amazed at how the stars were round, sharp, and had no comma. I compared to $ Zeiss 21mm, my very, very sharp Canon L 24-70 2.8 I, and many others. Nothing gave me that performance.It has a bit of distortion, but is less bothersome than my Zeiss 21.
Summary: The lens is a little hard to focus at f2.8. Close it to f4 and you're good to go. I kind of miss the fisheye distorition on my FF. Bought this one to replace the 8mm that I had for my cropped camera. If you want a wide angle with low distortion, this one is a good choice!