From Sigma:
Thank you for your patronage to SIGMA products.
We would like to announce that we are planning to release a firmware update for the SIGMA 150-600mm F5-6.3 DG OS HSM | Sports in Canon and Nikon mount, as well as the SIGMA 150-600mm F5-6.3 DG OS HSM | Contemporary in Canon and Nikon mount on Friday, March 11th, 2016.
The latest firmware update improves the AF algorithm of 150-600mm F5-6.3 DG OS HSM lenses and further enhances AF speed by optimizing HSM (Hyper Sonic Motor) drive control.
It is expected to increase autofocus speed by approximately 20%, to a maximum of 50%, during normal shooting as well as when using “Speed Priority” set through SIGMA Optimization Pro.
The firmware update requires the installation of the latest version of SIGMA Optimization Pro on your personal computer and the SIGMA USB DOCK accessory (sold separately).
Further details on this firmware update will be announced at a later date.
We appreciate your continued support for our company and products.
B&H carries the Sigma 150-600mm lenses and the USB Dock.
From Sigma:
Thank you for purchasing and using our products.
The Sigma Corporation is pleased to announce that the lens firmware update for the 150-600mm F5-6.3 DG OS HSM | Sports SIGMA, CANON and NIKON is available through SIGMA Optimization Pro, the dedicated software for the SIGMA USB DOCK.
The latest firmware enables the lens to offer improved Optical Stabilization in OS mode 2, which is optimized for panning photography. By taking advantage of the new OS algorithm in OS mode 2, it provides effective compensation, not only in horizontal direction, but also vertical and diagonal directions.
For those customers who own the following product, please update the firmware of the lens via SIGMA Optimization Pro.
[Product]
Should the version of SIGMA Optimization Pro not be updated to Ver. 1.2 yet, please be sure to update it before operating any lens firmware update.
You can download the latest version of the software from the following page;
http://www.sigma-global.com/download/en/
B&H carries the Sigma 150-600mm F5-6.3 DG OS HSM Sports lens.
From Sigma:
Canon Mount Firmware 1.03 – It has optimized the lens firmware for SIGMA TELE CONVERTER TC-1401 and TC-2001.
Note: Before upgrading the firmware of 120-300mm F2.8 DG OS HSM S013, please first update your SIGMA Optimization Pro to Ver1.2.0.
Download via Optimization Pro Software and install via Sigma's USB Dock.
B&H carries the Sigma 120-300mm F2.8 DG OS HSM Sports Lens.
From Sigma:
Thank you for purchasing and using our products.
We are pleased to inform you the SIGMA 120-300mm f/2.8 DG OS HSM F/CANON Firmware Update is now available.
This firmware update allows you to use the SIGMA USB DOCK with the SIGMA 120-300mm f/2.8 DG OS HSM F/CANON. If you have the products mentioned below, please start up SIGMA Optimization Pro and then operate lens firmware update.
Applicable products: SIGMA 120-300mm f/2.8 DG OS HSM S013 F/CANON
Benefits of this firmware update:
Please update to SIGMA Optimization Pro Ver1.2 before operating firmware update of SIGMA 120-300mm f/2.8 DG OS HSM S013 F/CANON.
SIGMA Optimization Pro Download Page
Note: Apparently, blogger/photographer JerseyShooter had a big hand in alerting Sigma to the need for this firmware update. Check out his blog for more info.
B&H carries the Sigma 120-300mm f/2.8 DG OS HSM lens and the Sigma USB Dock.