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Title: Doesn't focus
Review: After using that lens for 2 years, I had to sell it. It simply doesn't focus properly, and this is for all the lenses, not just the one I bought, as I checked others in the store afterwards. Simply zoom in onto your picture you will notice that what looked to be focused is not. I bought another one from another manufacturer, and make comparison over a month trial, and indeed the lens doesn't have a very accurate focus. Plus the range doesn't exist in my other manufacturers because it's not easy to build a high quality lens for a cheap price with such a high range.
