Lens review
2007-09-23
Canon EF-S 17-55 mm f/2.8 IS USM
10. Autofocus
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The Canon 17-55 mm is equipped with a quiet, fast and flawlessly working USM mechanism. In this category we have nothing bad to say about the lens - in test conditions it failed in 3% of cases, which is a great score.
We did not notice any problems with front or back focusing, which can be seen on the pictures below.




