Firmware update for SIGMA 35mm F1.2 DG DN | Art for L-Mount

Thank you for purchasing and using our products.

We would like to announce that a new firmware update for SIGMA 35mm F1.2 DG DN | Art for L-Mount is now available.

[Applicable product]
・SIGMA 35mm F1.2 DG DN | Art for L-Mount

[Benefits of the update]
・The lens has become compatible with focus ring adjustment functionality.
・Improved the quality of aperture operation and AF tracking in movie shooting.
・ It has improved AF performance when shooting a distant view

[How to update]
※ For those who update the firmware in-camera, please refer to the following page for firmware updates

※ For customers who own the SIGMA USB DOCK UD-11
Connect the lens to a computer via the SIGMA USB DOCK UD-11 (sold separately), then open SIGMA Optimization Pro*. If the lens 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 using the SIGMA USB DOCK UD-11, please ensure you update SIGMA Optimization Pro to the latest version.

【SIGMA Optimization Pro download page】

For further assistance please contact Sigma Imaging (UK) Ltd Service Department by email: or telephone: 01707 329 999

We appreciate your continued support for our company and products.