Sigma 120-300mm F2.8 DG OS HSM | Sports (SIGMA SA-mount) firmware v1.01

Sigma · Released Oct 23, 2014 · First seen Jul 5, 2026

v1.01 is not the latest firmware for the Sigma 120-300mm F2.8 DG OS HSM / Sports (SIGMA SA-mount): the current version is v1.02 (December 17, 2020). Go to v1.02

In short — summary by updatemystuff.com

Enhances autofocus performance and optimizes for newer tele converters while becoming incompatible with older models.

  • Autofocus speed improved in Standard and Speed-priority modes
  • Optimized for SIGMA TELE CONVERTER TC-1401 and TC-2001
  • No longer compatible with APO TELE CONVERTER 1.4x EX DG and 2x EX DG

Written from Sigma's release notes, which are printed in full below.

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What's in this update

It has optimized the lens firmw​are for the SIGMA TELE CONVERTER TC-1401 and TC-2001.

The Auto Focus speed has been improved on “Standard” and “Speed-priority” mode has been improved.

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.

Note: Updating the lens firmware to the latest version will optimize the lens for th​e new tele converters, however it will become incompatible with the conventional APO TELE CONVERTER 1.4x EX DG and APO TELE CONVERTER 2x EX DG.

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Other versions for this product

See the full firmware history for the 120-300mm F2.8 DG OS HSM | Sports (SIGMA SA-mount)