OM System E-300 firmware v1.5

OM System · Released Nov 20, 2007 · First seen Jul 5, 2026

v1.5 is the latest firmware for the OM System E-300, released November 20, 2007.

What's in this update

E-300 Firmware Ver1.5 has incorporated the following upgrade. [Notice​] If the firmware is updated to version 1.5, the settings except date will be cleared an​d returned to the factory default. [Modification]

  • Improved the focusing accuracy when using the EC-20 Teleconverter.

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