Canon · Canon EF → Canon EF-M adapter
Canon EF-EOS M — Canon EF → Canon EF-M adapter
Canon's adapter from EF / EF-S onto the EOS M (EF-M) APS-C mirrorless line. Discontinued in spirit as Canon shifted M-line to RF-S in 2023.
At a glance
- Vendor
- Canon
- Release year
- 2012
- Body-side contacts
- 11 pins
- Flags
- firmware-updatable —weather-sealed —requires glass —
What this adapter preserves
Compatibility for Canon EF lens on a Canon EF-M body (computed from the lensmount dataset — open the Canon EF to Canon EF-M adapter page for the full verdict, flange clearance, and adapter caveats).
- Focus: Full AF
- IS: IS / IBIS preserved
- Aperture: Electronic aperture
- Infinity focus: Reaches infinity
Format note: Lens covers full-frame; body is APS-C — 1.5× crop factor applies relative to the lens's native image circle. No vignetting; the body uses the centre of the lens.
What it does
Full AF, IS, and electronic aperture; 1.6× crop on every M body.
Common questions
- Will Canon keep selling the EF-EOS M adapter?
- Canon discontinued the EOS M body line in 2023 in favour of RF / RF-S, and adapter stock is gradually drying up at retail. Second-hand availability remains plentiful.
- Do EF-S lenses retain full AF on EOS M bodies through the adapter?
- Yes — both EF and EF-S lenses preserve full AF, IS, and electronic aperture on every EOS M body. A 1.6× APS-C crop applies because every M body is APS-C.
- Can I move my EF lenses to a Canon RF body later?
- Yes — buy a Canon EF-EOS R adapter for RF bodies. The EF-EOS M is EOS-M-specific and won't physically mount on an RF body.
Mounts on either side
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More from Canon
Same lens-side mount (Canon EF)
- Canon EF-EOS R — onto Canon RF · 2018
- Sigma MC-11 — onto Sony E · 2016
- Sigma MC-21 — onto L-Mount · 2019
- Metabones EF-E Mark V — onto Sony E · 2017
- Metabones Speed Booster ULTRA 0.71× EF-E — onto Sony E · 2014
- Viltrox EF-EOS R5 (autofocus EF-to-RF) — onto Canon RF · 2024
- Viltrox EF-NEX IV (EF-E) — onto Sony E · 2018
- Fringer EF-FX Pro II — onto Fujifilm X · 2020
- Fringer EF-GFX Pro — onto Fujifilm GFX · 2019
- Fotodiox Pro EF-NEX — onto Sony E · 2018
- Kipon Baveyes EF-FE 0.7x — onto Sony E · 2017
- Kipon Baveyes EF-FX 0.7x — onto Fujifilm X · 2017
- Commlite CM-EF-NEX HS — onto Sony E · 2018
- Commlite CM-EF-EOS R — onto Canon RF · 2019
- Viltrox EF-M2 II — onto Micro Four Thirds · 2018
- Fotodiox Vizelex ND Throttle EF-NEX — onto Sony E · 2014
- Fringer EF-NZ II — onto Nikon Z · 2023
Keep exploring
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