Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: A potentially great lens with a high defect rate
Review: I bought this lens a few weeks ago and it consistently produces out of focus images at f/2.8 through f/4.0 Amazon was great to work with, and they sent a replacement which turned out to be defective as well. I've shot several hundred images on each, under various lighting conditions, using my 5D Mark II body. The two exaples I evaluated are very poor performers at f/4.0 and wider. One went back to Amazon as defective, another went to Canon for a warranty claim.I hope they can fix this lens, because I really want it to perform as well as some of the better examples of this product out there.If you buy the 70-200 f/2.8 L IS, be sure to test it at wide apperture values while you can still return it.Shame on Canon for a poor quality control process.
