Thank you for purchasing and using our products.

We would like to announce that a new firmware update for SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for CANON EF mount 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 100-400mm F5-6.3 DG OS HSM | Contemporary for CANON EF 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 EF-L.

【SIGMA Optimization Pro Download page】

https://www.sigma-global.com/en/download/lenses/sigma-optimization-pro/

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

We appreciate your continued support for our company and products.