Pentax 17-70mm F4 vs Sigma 17-70mm Lenses

Three-way comparative review

By PF Staff in Review Announcements on Aug 6, 2012

We're happy to announce our latest review, which is a three-way comparison of the SMC Pentax-DA 17-70mm F4, Sigma 17-70mm F2.8-4 DC OS HSM Macro, and Sigma 17-70mm F2.8-4.5 DC Macro.  Originally meant to be just a two-lens comparison, we decided to initially hold off with publishing the review and instead expanded it to a three-way comparison to include both the old (F2.8-4.5) and new (F2.8-4) versions of the Sigma 17-70mm (as evidenced by the thumbnail above!).

17-70mm lenses offer a very versatile zoom range which we recently recommended in our Pentax K-30 lens guide.  So, which of the three 17-70mm lenses available for Pentax cameras is the best?

Continue reading the 17-70mm comparative review

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