Thank you for purchasing and using our products.

We would like to announce that a firmware update for the SIGMA 24-70mm F2.8 DG OS HSM | Art for SIGMA, Canon, and Nikon is now available.

This firmware update corrects the phenomenon that the Manual Override (MO) function will be disabled after adjusting the settings of focus mode switch on SIGMA Optimization Pro (Macintosh ver.).
For customers who own the SIGMA USB DOCK, please update the firmware via SIGMA Optimization Pro.
It is possible to update the firmware through either version (Macintosh / Windows) of SIGMA Optimization Pro.
Applicable product
SIGMA 24-70mm F2.8 DG OS HSM | Art SIGMA / Canon / Nikon
Benefit of this firmware update
It has corrected the phenomenon that the Manual Override (MO) function will be disabled after adjusting the settings of focus mode switch on SIGMA Optimization Pro (Macintosh ver.).

SIGMA Optimization Pro Download page
https://www.sigma-global.com/en/download/lenses/sigma-optimization-pro/

For further assistance please contact Sigma Imaging (UK) Ltd Service Department by emailing service@sigmauk.com or telephoning 01707 329 999

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