There are many things to like about the Sigma 17-70mm f/2.8-4 DC Macro OS HSM lens. Its high quality optics, built-in image stabilization, fast f/2.8-f/4 maximum aperture, affordable $499 price tag, and... built-in macro. To me, having macro on an already terrific all-around enthusiast lens feels like a luxury. So I decided to test its capability, just to make sure I wasn't getting excited about, well, nothing. Fortunately, I wasn't. I mounted the Sigma zoom on a Canon 60D and played with different close up settings. The maximum reproduction ratio is 1:2.8, but it felt tighter than that. Maybe...
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