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Title: The second best zoom lens in Canon's lineup
Review: Excellent contrast, color, and sharpness. The f/4L IS offers a much more pleasing bokeh than the non-IS version, which I've used, due to the newer shape and positioning of the blades. This lens is only second to the 70-200mm f/2.8L IS mkII, and it's not far behind. Given the price and weight difference between this lens and the mkII, I'd say this is definitely the way to go unless you're shooting indoor sports or need super-bokeh.
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