Sigma ELECTRONIC FLASH EF-630 (Canon EF mount)
firmware v1.02
Sigma · Released Dec 22, 2017 · First seen Jul 5, 2026
v1.02 is not the latest firmware for the Sigma ELECTRONIC FLASH EF-630 (Canon EF mount): the current version is v1.05 (August 5, 2021). Go to v1.05
In short — summary by updatemystuff.com
Fixes distance display unit switching and unintended flash triggering via Sync Terminal.
- Distance display can now switch between meters and feet in custom mode
- Eliminated occasional unintended flashing when using Sync Terminal
Written from Sigma's release notes, which are printed in full below.
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What's in this update
It corrects the phenomenon that the distance display cannot be switched between meters and feet in custom mode. It corrects the phenomenon that it occasionally flashes unintentionally when the Sync. Terminal is used.
- Please ensure to update SIGMA Optimization Pro to Ver1.4.1 for Windows, and Ver1.4.0 for Macintosh before updating the firmware.
- It takes about 3 minutes to update the firmware.
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