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Sigma Corporation would like to announce a firmware update for the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for Canon and SIGMA MOUNT CONVERTER MC-11 EF-E is now available.

By updating the firmware, the lens will offer improved AF performance. Also, the latest firmware of the SIGMA MOUNT CONVERTER MC-11 EF-E will not only offer improved AF performance, but also enables the OS mechanism to start operating faster than before.

For customers who own the SIGMA USB DOCK, please update the firmware via SIGMA Optimization Pro. For those who own the SIGMA MOUNT CONVERTER MC-11 EF-E, please update the firmware via SIGMA Optimization Pro by connecting it to a computer using a supplied USB Cable.
Before updating the MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.4.1 or later for Windows, and ver. 1.4.0 or later for Macintosh from the following download page.

Applicable product
SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for Canon

Benefits of this firmware update
– It has improved the AF performance.
– When attached to the SIGMA MOUNT CONVERTER MC-11 EF-E (ver. 1.06), it offers not only the improved AF performance, but also enables the OS mechanism to start operating faster than before.

Applicable product
SIGMA MOUNT CONVERTER MC-11 EF-E

Benefit of this firmware update
– It has become compatible with the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for Canon (ver. 1.01).

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.