Thank you for purchasing and using our products.

Sigma Corporation would like to announce a firmware update for the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for Nikon is now available. By updating the firmware, the lens will offer improved AF performance.
For customers who own the SIGMA USB DOCK, please update the firmware via SIGMA Optimization Pro.

 

【Applicable product】
SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for Nikon

【Benefits of this firmware update】
- It has improved the AF performance.

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

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

We appreciate your continued support for our company and products.