https://www.photographyblog.com/ ... f1_4_dg_hsm_review/
essential
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. |