17-70mm F2.8-4 DC MACRO OS HSM | Contemporary (Canon EF mount) firmware v1.01
Sigma · Released Sep 20, 2013 · First seen by GearPulse Jul 5, 2026
What's in this update
It has improved the stability of the Optical Stabilizer’s operation.It has refined the AF algorithm to reduce the operating noise. * Please update to SIGMA Optimization Pro Ver1.2 before operating firmware update of 17-70mm F2.8-4 DC MACRO OS HSM C013.
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