Firmware update for Canon RF Mount lenses
Support, Firmware
2026.06.25
AWARD
2026.04.17
Thank you for using Sigma products.
We are pleased to announce that the download of firmware for Sigma's Canon RF Mount is now available.
The changes in this firmware are as follows:
【Applicable product and version】
- Sigma 17-40mm F1.8 DC | Art Ver.1.0.2 for Canon RF Mount
【Benefit of the update】
- Fixed an issue where the monitor would rarely black out and freeze during shooting when combined with the Canon EOS R6 Mark III.
【How to update】
Please select the applicable product from the following page, go to the download page, click "Canon RF mount", read "Before updating" prior to updating the firmware and follow the update procedure
https://www.sigma-global.com/en/support/firmware/?category=lenses&mount=canon_rf
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