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Firmware v1.90 released for Fringer EF-FX (Pro) II adapters

A new firmware has been released for our award winning products EF-FX Pro II and EF-FX II.

In addition to adding some lenses to the tested and optimized lens list, we also have fixed a couple of compatibility issues with the X-Trans IV cameras. Please check the details below.

Version 1.90

  1. Added following lenses to the tested and optimized lens list:
    • EF 400mm f/2.8L IS II USM
    • EF 400mm f/2.8L IS II USM + 1.4X
    • EF 400mm f/2.8L IS II USM + 2X
    • EF 70-210/3.5-4.5 USM
  2. Fixed PDAF issues for some lens of the following models: Lens didn’t get recognized by the adapter due to different lens firmware version.
    • Sigma 24-105/4 ART
  3. Fixed a compatibility issue with X-T3 firmware 4.0: under certain circumstances, contrast AF may fail. This issue may also affect other cameras like X-T4 and X-S10.
  4. Fixed camera freeze issue on cameras equipped with X-Trans IV CMOS. When
    • In bright environment,
    • Adapting telephoto, ultra-fast or macro lenses,
    • Aperture is NOT wide open,
    • Subject is far away from current focus point and is so blur that phase detection doesn’t work,

Auto focus may fail. Sometimes, especially when using AF-ON button or touch screen to AF, it may freeze the camera. Even the power switch doesn’t work.

This problem has been fixed. Affected cameras include X-T3 (firmware 2.0 or later), X-T30, X-T4, X-Pro3, X-S10.

As the bug fixes are important, upgrading is highly suggested.

Please visit our website to download the new firmware and its release notes. Follow the instructions in the release notes to upgrade your adapter.