Excerpt: I am quite impressed with the quality of this lens, both opticaly and build. I use this lens a a general walk around lens and is very usefull for this. The only thing I don't like about this lens is the manual focus operation. Since it's focus by wire you have to half press the shutter button and then you can turn the focus ring to change focus. If there's no movement of the focus ring for 5 seconds you have to half press the shutter button again to continue focusing.
Summary: I have used this lens on my full frame 6D and crop 60D cameras and am impressed I that I spent so little money for such a great performer. It is small and the focus is slow-ish but it gets great results!
Excerpt: Put this little guy on my 7D2 and it performs real well.. So light yet stays balanced and comfortable.. Sharp images and nice bokeh.. Only used it for a few shots, but so far it performs very well.. Nice to have in you pocket if you're on a long walk with a telephoto and need this kind of lens...
Pros: Consistent Output, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Nice Bokeh
Excerpt: Combine this lens with Canon 6D and you have a full frame compact that shoots 4.5 FPS and has an insane ISO. Files are sharp, colors true, focus is accurate. I do not think that anything touches this combination in the marketplace whether it is from image quality, size or price stand point. What a great lens.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight