Lens adapter compatibility

Four Thirds lenses on Fujifilm X-mount cameras

Can you use Four Thirds lenses on Fujifilm X-mount cameras? Yes, with a simple mechanical adapter (manual focus). The Four Thirds flange distance is 38.67 mm and Fujifilm X-mount is 17.70 mm, a difference of +20.97 mm.

+20.97 mm

Space for the adapter

38.67 mm

Four Thirds flange

17.70 mm

Fujifilm X-mount flange

Verdict: Yes — a simple 21.0 mm adapter keeps infinity focus.

What to expect#

Aperture control: lenses with a manual aperture ring work directly; electronically controlled lenses (no ring) need a smart adapter or one with a built-in aperture lever.

Focus: use focus peaking and magnification in the viewfinder. Exposure metering works normally because the camera meters through the lens at working aperture.

Crop factor: on a 1.5× crop Fujifilm X-mount body a 50 mm Four Thirds lens frames like 75 mm. A focal reducer (“speed booster”) can bring back some width and gain about a stop of light.

Four Thirds lenses you could adapt#

Fujifilm X-mount cameras#

Other systems for Four Thirds lenses#

Sony E-mount Canon RF Nikon Z Micro Four Thirds L-Mount Canon EF-M Fujifilm G-mount Hasselblad XCD Nikon 1 (CX)Pentax Q

Frequently asked questions#

Will Four Thirds lenses autofocus on Fujifilm X-mount?

No — adapted lenses are manual focus on this combination.

Does a Four Thirds to Fujifilm X-mount adapter affect image quality?

A glass-free adapter is just a precisely machined spacer, so image quality is unchanged when it is built to the right thickness. Cheap adapters can be slightly too thin or thick, which shifts the infinity mark.

Last updated October 03, 2026 · How we calculate · Sources