The Sigma 135mm F1.8 DG HSM Art is a full-frame telephoto portrait prime for Canon EF mount featuring 13 elements in 10 groups and a fast F1.8 aperture that produces exceptionally smooth bokeh. It uses HSM autofocus and a 9-blade circular aperture. The lens belongs to Sigma's Global Vision Art line.
Product released: March 16, 2017
Latest firmware version
Version 2.03, released December 17, 2020
What's new in version 2.03
It has optimized the exposure during viewfinder shooting when used in combination with the EOS 90D and the EOS-1D X Mark III.