Quote Originally Posted by peety3


Check lensrentals.com - this lens has "made their list" of problematic lenses. Not too bad, but definitely some issues.
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Well it depends. The list could be "biased" - what I really mean by that is, if this lens is rented say 100 times a month, while the other lenses only say 40 times per month, there is obviously more chance to find a problem in this lens (the 17-55). Also, since so many people are using this lens, the chances are even higher - you don't know what the lens is going through while people are using it.


I guess Roger Cicala could shade some more light on this issue and help us understand it a bit better.