Sigma released a new firmware update for the Sigma 24-70mm f/2.8 DG OS HSM Art lens that fixes overexposure problems when used with Nikon Z6/Z7 mirrorless cameras (see previous Sigma updates for Nikon Z):
Operating conditions of the Nikon “Z 6” and SIGMA’s interchangeable lenses for Nikon F mount, and firmware update for SIGMA 24-70mm F2.8 DG OS HSM | Art for Nikon F mount
We would like to announce that the operating conditions of SIGMA’s interchangeable lenses for NIKON F mount on the Nikon “Z 6” and their “Mount Adapter FTZ” are the same as when they are used in combination with the Nikon “Z 7” and their “Mount Adapter FTZ” that we announced on October 26th, 2018.
Furthermore, we would like to announce that a new firmware update for SIGMA 24-70mm F2.8 DG OS HSM | Art for NIKON F mount improves on the phenomenon particular to the lens when it is used in combination with the Nikon “Z 7” or “Z 6” and their “Mount Adapter FTZ”.
For customers who own the SIGMA USB DOCK and applicable product listed below, please update the firmware via SIGMA Optimization Pro (before updating the firmware using the SIGMA USB DOCK, please ensure to update SIGMA Optimization Pro to Ver. 1.5.0 or later).
- Applicable product: SIGMA 24-70mm F2.8 DG OS HSM | Art for NIKON F mount
- Benefit of the update: When the lens is used in combination with the Nikon “Z 7” or “Z 6” and their “Mount Adapter FTZ”, it has corrected the phenomenon whereby it may occasionally show overexposure when narrowing down the aperture from F5.6 while shooting.
- SIGMA Optimization Pro Download page: https://www.sigma-global.com/en/download/lenses/sigma-optimization-pro/