Sigma 120-300mm F2.8 DG OS HSM | Sports (Nikon F mount) firmware v1.03

Sigma · Released Aug 5, 2016 · First seen Jul 5, 2026

v1.03 is the latest firmware for the Sigma 120-300mm F2.8 DG OS HSM / Sports (Nikon F mount), released August 5, 2016.

In short — summary by updatemystuff.com

Fixes underexposure issue when used with TC-1401 or TC-2001 teleconverters on Nikon D500.

  • Corrects underexposure phenomenon with TC-1401 and TC-2001 teleconverters on Nikon D500
  • Requires SIGMA Optimization Pro Ver1.3.0 to be installed before updating lens firmware
  • Becomes incompatible with older APO TELE CONVERTER 1.4x EX DG and 2x EX DG models

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

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What's in this update

It has corrected the phenomenon that it shows some underexposure when it is attached wit​h TELE CONVERTER TC-1401 or TC-2001 on a Nikon D500.

Note: Before upgrading the firmware of 120-300mm F2.8 DG OS HSM S013, please first update your SIGMA Optimization Pro to Ver1.3.0.Note: Updating the lens firmware to the latest version wil​l optimize the lens for the 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 (Nikon F mount)