Horrible lens! Don't buy!
Lens stopped working during an important photo shoot. The quality is very bad for a Canon lens. Canon needs to recall these lenses and discontinue them. The 15-85mm USM IS is a better option/replacement.
April 6, 2013
Happy Camper
I bought this lens in 2005 when I bought my 20D. I use it as my everyday walk around lens and it has traveled with me around the world. Never a problem. Never a hiccup. The only reason I would change this lens is if they made the same lens in an "L" series. If I can tear myself away from it I am going to send it in to be cleaned so I can use it with my new 7D.
September 12, 2012
I expected better
This should be a great lens the 17-85mm range makes it great as a primary lens and while the 4-5.6 aperture is at times a bit slow, overall I was extremely happy with it for the first year. Since then auto focus fails intermittently and it doesn't take much of an Internet search to realize that this model has that problem and Canon should be addressing it.
August 17, 2012
A lot of defects, h.aberration, bad aperture, vignetting, bad colors reflecting.
June 12, 2012
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