What I like: Ultra wide angle with no fisheye distortion Sharp with great color reproduction Continuous F2.8 aperture Amazing build quality - smooth focus across the range Almost $1,000 less than the Canon 16-35 f2.8What I dislike: Despite the excellent build quality, this lens is heavy. I called him "Big Daddy". That being said, I carried it, 2 bodies and 2 other lenses through the woods for several hours so that's not a problem. Sigma has a real winner here! This is the first Sigma lens I've put in my bag and I'm glad I did. an indispensable thing for my landscape photography!
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