The Viltrox EF‑GFX II is an electronic adapter for using Canon EF and EF‑S lenses on Fujifilm GFX medium-format cameras. It transfers EXIF data, supports autofocus, electronic aperture control and lens stabilisation, and firmware can be updated through its USB port.
The Viltrox EF‑GFX II is an electronic adapter for using Canon EF and EF‑S lenses on Fujifilm GFX medium-format cameras. It transfers EXIF data, supports autofocus, electronic aperture control and lens stabilisation, and firmware can be updated through its USB port.

Canon EF on Fujifilm GFX
This electronic adapter connects Canon EF and EF‑S lenses to Fujifilm GFX cameras. It retains autofocus, aperture control, EXIF transfer and lens stabilisation, extending a GFX kit with existing EF lenses.
Metal electronic contacts and a data chip provide communication between lens and camera. Aperture, shutter speed and ISO remain controllable from the camera; supported lens stabilisation assists handheld work. The USB port is for firmware updates and ongoing compatibility.

The adapter is designed for Fujifilm GFX bodies including GFX100, GFX50R, GFX50S II and GFX50S. It measures 79 mm in diameter by 24 mm thick and weighs approximately 85 g without caps.
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