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 1.6× crop Canon EF-M body a 50 mm Micro Four Thirds lens frames like 80 mm. A focal reducer (“speed booster”) can bring back some width and gain about a stop of light.
Micro Four Thirds lenses you could adapt#
- Laowa 17mm f/1.8 C-Dreamer
- Laowa 7.5mm f/2.0
- Laowa 9mm f/2.8 Zero-D
- OM System 12-100mm F4.0
- OM System 12-45mm F4.0
- OM System 20mm F1.4
- OM System M.Zuiko Digital ED 40-150mm F4.0 PRO
- Olympus M.Zuiko Digital 14-42mm f/3.5-5.6 II
- Olympus M.Zuiko Digital 17mm f/1.8
- Olympus M.Zuiko Digital 17mm f/2.8 Pancake
- Olympus M.Zuiko Digital 25mm f/1.8
- Olympus M.Zuiko Digital 45mm f/1.8
- Olympus M.Zuiko Digital ED 12-100mm f/4.0 IS Pro
- Olympus M.Zuiko Digital ED 12-200mm f/3.5-6.3
- Olympus M.Zuiko Digital ED 12-40mm f/2.8 Pro
- Olympus M.Zuiko Digital ED 12-45mm f/4.0 Pro
- Olympus M.Zuiko Digital ED 12-50mm f/3.5-6.3 EZ
- Olympus M.Zuiko Digital ED 12mm f/2.0
Canon EF-M cameras#
Other systems for Micro Four Thirds lenses#
Frequently asked questions#
Will Micro Four Thirds lenses autofocus on Canon EF-M?
No — adapted lenses are manual focus on this combination.
Does a Micro Four Thirds to Canon EF-M 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