Sigma 105mm F2.8 EX DG OS HSM review: A serious 100mm macro competitor?

First we’ll analyze the lens results when mounted on the Canon EOS 1Ds Mark III and on the Nikon D3x. Then we’ll measure the progress in terms of image quality by comparing the 2011 results with the earlier non-stabilized version, the Sigma 105mm F2.8 EX DG Macro, announced in June 2004.Finally, we’ll see how this lens stacks up against other macro lenses already tested, giving us an opportunity to revisit the overview of 100mm macros for full-frame cameras that we recently published on this site.The Sigma 105mm F2.8 EX DG OS HSM put through the DxOMark millThe