Firmware update for L-Mount lenses

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 40mm F1.4 DG HSM | Art Ver1.2 for L-Mount
・Sigma 105mm F1.4 DG HSM | Art Ver1.2 for L-Mount

【Benefit of the update】
・The operational stability has been improved.

【Applicable product and version】
・Sigma 16-28mm F2.8 DG DN | Contemporary Ver1.2 for L-Mount
・Sigma 28-70mm F2.8 DG DN | Contemporary Ver1.3 for L-Mount

【Benefit of the update】
・We have fixed an issue where autofocus would stop working properly on some cameras.

【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.