Sigma 35mm F1.2 DG DN | Art (Sony E-mount) firmware v03

Sigma · Released Dec 17, 2020 · First seen Jul 5, 2026

v03 is not the latest firmware for the Sigma 35mm F1.2 DG DN / Art (Sony E-mount): the current version is v05 (August 22, 2024). Go to v05

In short — summary by updatemystuff.com

Fixes rare autofocus failures in Continuous AF mode

  • Resolved occasional focus failures in AF-C mode

Written from Sigma's release notes, which are printed in full below.

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What's in this update

Improved the phenomenon that the focus does not w​ork on rare occasions when the focus mode is set to AF-C (Continuous AF). SIGMA 35mm F1.2 DG DN | Art for Sony E-moun​t firmware Ver.03 is available for update at the following site.

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Other versions for this product

See the full firmware history for the 35mm F1.2 DG DN | Art (Sony E-mount)