Thank you for purchasing and using our products.

We would like to announce that a new firmware update for SIGMA’s interchangeable lenses for SIGMA SA mount listed below is now available.

For customers who own the SIGMA USB DOCK and applicable products listed below, please update the firmware via SIGMA Optimization Pro※.

※ Before updating the firmware using the SIGMA USB DOCK, please ensure to update SIGMA Optimization Pro to Ver. 1.5.0. or later for Windows / Ver. 1.5.1. or later for Macintosh.

[Applicable product]
・SIGMA 85mm F1.4 DG HSM | Art for SIGMA SA mount

[Benefits of the update]
・It has reduced the aperture drive noise when using the SIGMA MOUNT CONVERTER MC-21 SA-L.

[Applicable product]
・SIGMA 14-24mm F2.8 DG HSM | Art for SIGMA SA mount

[Benefits of the update]
・It has improved the AF performance when used in combination with the SIGMA MOUNT CONVERTER MC-21 SA-L.

[Applicable product]
・SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for SIGMA SA mount
・SIGMA 500mm F4 DG OS HSM | Sports for SIGMA SA mount

[Benefits of the update]
・It has optimized the operation of Mode 2 in Optical Stabilizer when used in combination with the SIGMA MOUNT CONVERTER MC-21 SA-L.

【SIGMA Optimization Pro Download page】
https://www.sigma-global.com/en/download/lenses/sigma-optimization-pro/

For further information, please contact your nearest authorized SIGMA subsidiary / distributor.
https://www.sigma-global.com/en/about/world-network/

We appreciate your continued support for our company and products.