For lovers of macro photos as well as of quality portraits, Sigma added a 70mm F2.8 EX DG Macro to its pro (EX) line in 2006.
Let’s just see how this 70mm performs on our tests when compared to some of its direct competitors —specifically, the Canon EF-S 60mm f/2.8 Macro USM and the Nikon AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED. But first, let’s look the 70mm’s standalone DxOMark results.
|Strong points||Weak points|
|High resolution||Only so-so transmission|
|Very weak vignetting|
|Controlled chromatic aberrations|
Now let’s compare the Sigma lens DxOMark results against the APS-C-format test results for two of its direct competitors.
The Sigma achieves very good results, putting it in second place ahead of Canon 60mm f2.8 Macro USM, which it beats in every category except for chromatic aberration. Its very-well-corrected vignetting is its principal strong point with respect to the Canon — and with respect to the Nikon as well. Globally, however, it stays below the somewhat more expensive Nikon 105mm, which has better resolution and better-controlled chromatic aberrations.