The Sigma 135mm F1.8 DG HSM Art is a full-frame telephoto portrait prime for Nikon F mount featuring 13 elements in 10 groups and a fast F1.8 aperture. It uses HSM autofocus and a 9-blade circular aperture producing smooth bokeh. The lens belongs to Sigma's Global Vision Art line.
Product released: March 16, 2017
Latest firmware version
Version 1.02, released September 17, 2020
What's new in version 1.02
It has improved the start-up time after the Nikon D6 power is turned on.It has fixed an issue where the autofocus did not work when used on a Nikon D6.