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Title: With my 450D
Review: Pros:* Very sharp* Auto-focus is smooth and responsive* F2 helps a lot with low-light (but see cons)* Not a white lens so you're not as noticeableCons:* On a crop frame like my 450D, you're effectively at about 218mm. Without any IS, it can be difficult to hold steady in low-light situations, even at F2.EDIT (2012-12-13): Three and a half years later, and now on a 7D, this is still one of my favorite lenses.
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