Title: F1.4 autofocus problems
Review: When this lens works it is fantastic. Beautiful pictures, great performance even in lower light. Unfortunately, it hs died on me twice (autofocus). The first time Canon fixed it under warranty, mentioning something about a cracked housing or something. The lens has been well taken care of so I don't know what that's about. Recently, it started having the same autofocus problem again. It starts by not being able to focus on close objects. Now it just won't focus at all, not even manually. The lens weighs a lot more than the 1.8, but I don't think that translates to better quality components. Everything is plastic inside with relatively loose tolerances. I probably would have just gotten the 1.8 if I knew I was getting a short-lived lens. Very disappointing. Anyone considering buying this lens may want to reconsider.
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