News
Firmware update for L-Mount lenses
Support, Firmware
2026.03.18
Thank you for using Sigma products.
We are pleased to announce that the download of firmware for Sigma's L-Mount is now available.
The changes in this firmware are as follows:
【Applicable product and version】
- Sigma 14mm F1.4 DG DN | Art Ver1.2 for L-Mount
- Sigma 35mm F1.2 DG II | Art Ver1.1 for L-Mount
- Sigma 35mm F2 DG DN | Contemporary Ver1.5 for L-Mount
- Sigma 35mm F2 DG | Contemporary (Black & Silver) Ver1.5 for L-Mount
- Sigma 45mm F2.8 DG DN | Contemporary Ver1.7 for L-Mount
- Sigma 45mm F2.8 DG | Contemporary (Black & Silver) Ver1.7 for L-Mount
- Sigma 50mm F2 DG DN | Contemporary Ver1.3 for L-Mount
- Sigma 50mm F2 DG | Contemporary (Black / Silver) Ver1.3 for L-Mount
- Sigma 135mm F1.4 DG | Art Ver1.1 for L-Mount
- Sigma 200mm F2 DG OS | Sports Ver1.1 for L-Mount
【Benefit of the update】
- Added the ability to assign specific functions to the focus ring during AF.*
- Added the option to change the rotation direction of the focus ring during MF.*
- Added the option to display the aperture value as a T-stop during video recording.*
【How to update】
■For those who update the firmware in-camera
Please select the applicable product from the following page, go to the download page, click "L-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=l-mount
■For those who own the SIGMA USB DOCK UD-11
Connect the lens to your computer via the SIGMA USB DOCK UD-11 (sold separately), then open SIGMA Optimization Pro*. If the firmware isn't the latest version, the following message will appear: "The latest lens firmware is available." Click "Yes" to update.
*Before updating lens firmware via the SIGMA USB DOCK UD-11 for L-mount, please ensure that you have updated to the latest version of SIGMA Optimization Pro
【SIGMA Optimization Pro Download page】
https://www.sigma-global.com/en/support/software/sigma-optimization-pro/
For further information, please contact your nearest authorized SIGMA subsidiary / distributor.
https://www.sigma-global.com/en/world-network/
We appreciate your continued support for our company and products.