Sigma 17-70mm F2.8-4 DC MACRO OS HSM | C
Announced Sep 17, 2012 •
Zoom lens | Canon EF, Nikon F (DX), Pentax KAF3, Sony Alpha, Sigma SA
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Hello. I am looking to broaden my horizons past my 18-200 VR lens. In my research, I've been looking into the Sigma 17-70 f2/8-4. But there seem to be two different lenses called the same thing. In the lens comparison table, they look different and have some elements that are different, as well. Am I right about that? How can you tell what lens is which? Are both for sale? Has one replaced the other? Can somebody clear up what I'm sure is really a very simple question, but one which has me...