Reviews and Problems with Sigma 24-70mm F2.8 IF EX DG HSM
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Sigma 24-70mm f2.8 IF EX DG HSM
14 July 2010
Excerpt: Sigma has quietly been strengthening its professional lens range with new models aimed at full-frame DSLRs. Not only has the company added a number of pro-worthy large-aperture primes but they’ve also taken the opportunity to revisit the constant-aperture zooms.