The Sigma 50-100mm F1.8 DC HSM Art is an APS-C telephoto zoom for Sigma SA mount with a constant F1.8 aperture, the brightest zoom lens of its type, featuring 23 elements in 18 groups. It uses HSM autofocus and a 9-blade circular aperture. The lens belongs to Sigma's Global Vision Art line.
Product released: September 22, 2016
Latest firmware version
Version 1.01, released September 10, 2018
What's new in version 1.01
It has corrected the phenomenon that the AF performance occasionally becomes unstable when used via SIGMA MOUNT CONVERTER MC-11.