Sigma announced that a new firmware update for the SIGMA 17-70mm F2.8-4 DC MACRO OS HSM | Contemporary for Canon and SIGMA 18-200mm F3.5-6.3 DC MACRO OS HSM | Contemporary for Canon is now available.
This firmware allows compatibility with Canon’s in-camera Lens Aberration Correction function to enable correction matching the optical characteristics of each lens. It also corrects the phenomenon that abnormal images appear or operation errors occur when the function is enabled.
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https://www.dailycameranews.com/2018/11/sigma-released-17-70mm-f2-8-4-dc-macro-os-hsm-firmware-update-for-canon/
