Published: July 5, 2017
Sigma has issued MC-11 Firmware Update 1.07 that adds 14mm F1.8, 24-70mm F2.8 Art Lens Support – unfortunately still no update for Sony a9 AF Support.
Official text
This firmware update allows compatibility with the SIGMA 14mm F1.8 DG HSM | Art, SIGMA 24-70mm F2.8 DG OS HSM | Art, Cine Lens 14mm T2 FF EF mount and 135mm T2 FF EF mount from FF High Speed Prime Line.
For customers 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 the 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.
SIGMA Optimization Pro Download page
https://www.sigma-global.com/en/download/lenses/sigma-optimization-pro/
Applicable product
• SIGMA MOUNT CONVERTER MC-11 EF-E
Benefits of this firmware update
• It has become compatible with the SIGMA 14mm F1.8 DG HSM | Art and SIGMA 24-70mm F2.8 DG OS HSM | Art.
• It has become compatible with the FF High Speed Prime Line SIGMA 14mm T2 FF (EF) and the SIGMA 135mm T2 FF (EF).
For further information, please contact your nearest authorized SIGMA subsidiary / distributor.
http://www.sigma-global.com/en/about/world-network/
Order Sigma Mount Converter MC-11 for Sony E-mount from B&H Photo | Amazon
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