I imagine Zeiss must gnash their collective teeth quite strongly. They invented the Otus series which was supposed to prove that, for a quite astronomical price, you can produce an optically outstanding lens practically without any flaws. Meanwhile Sigma presented their 85 mm device which is not only able to win a duel with the Otus 1.4/85 in the most important categories but also breaks the resolution record of the Otus 1.4/28 on the sensor of the Canon EOS 5D Mark III. Mind you it is over three times cheaper. Nothing to add I suppose – a fully deserved Lenstip Editor’s Choice award.
The build quality is fantastic, with the brass lens mount and sober all-black design adding to the high-quality feel, and Sigma have also included a very good petal-shaped lens hood and padded case with strap. It is undeniably a large and heavy lens, though, alomst rivalling the infamous Zeiss Otus 85mm in these respects. Auto-focusing was fairly quick and quiet on the Canon EOS 5DS R that we tested the lens with, and manual focus over-ride at any time is a great feature, with large and well-damped focusing ring proving a pleasure to use.