Sigma 120-300mm F2.8 DG OS HSM | Sports (Canon EF mount)
firmware v1.02
Sigma · Released Oct 3, 2014 · First seen Jul 5, 2026
v1.02 is not the latest firmware for the Sigma 120-300mm F2.8 DG OS HSM / Sports (Canon EF mount): the current version is v2.02 (July 21, 2020). Go to v2.02
In short — summary by updatemystuff.com
Enables autofocus at any aperture when used with Canon EOS C100.
- Autofocus works at any aperture with Canon EOS C100
- Requires SIGMA Optimization Pro v1.2.0 before updating
Written from Sigma's release notes, which are printed in full below.
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What's in this update
Autofocus is supported at any aperture value when used with the Canon Digital Cinema Camera EOS C100. 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.
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