Sigma 17-70mm F2.8-4 DC MACRO OS HSM | Contemporary (Canon EF mount)
firmware v1.03
Sigma · Released May 17, 2017 · First seen Jul 5, 2026
v1.03 is not the latest firmware for the Sigma 17-70mm F2.8-4 DC MACRO OS HSM / Contemporary (Canon EF mount): the current version is v2.03 (October 21, 2021). Go to v2.03
In short — summary by updatemystuff.com
Improves autofocus for video and live view, reduces diaphragm noise during recording, adds Canon EOS C300 Mark II support.
- Enhanced autofocus performance for movies and live view on Canon DSLRs
- Quieter diaphragm operation during video recording
- Full compatibility with Canon EOS C300 Mark II
Written from Sigma's release notes, which are printed in full below.
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What's in this update
It has improved the AF performance when it is used with the SIGMA MOUNT CONVERTER MC-11 EF-E.
- For this update, it requires the firmware of the SIGMA USB DOCK for Canon mount to be ver. 1.02 or later.
- For this update, it requires the firmware of the SIGMA MOUNT CONVERTER MC-11 EF-E to be ver.1.05. It has reduced the operating sound of the lens diaphragm blades when attached with the SIGMA MOUNT CONVERTER MC-11 EF-E and used for shooting movies. It has improved the AF accuracy when the lens is used for shooting movies as well as Live View on EOS DIGITAL SLR cameras.*1 It has reduced the operating sound of the lens diaphragm blades when used for shooting movies on EOS DIGITAL SLR cameras.*1 It is fully functional with the Canon Digital Cinema Camera EOS C300 Mark II. ※1 The degree of improvement differs depending on the camera used.
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