# Canon EF-M-mount — Camera mount flange focal distance and adapter feasibility

For Canon EF-M-mount, flange focal distance (mm) is 18.00 mm; mount type is Mirrorless; format is APS-C; production years is 2012–, verified against its source on 2026-08-13.

- **Mount name:** Canon EF-M-mount _(verified: appears in the quote below)_
- **Flange focal distance (mm):** 18.00 mm _(verified: appears in the quote below)_
- **Mount type:** Mirrorless _(verified: appears in the quote below)_
- **Format:** APS-C _(verified: appears in the quote below)_
- **Production years:** 2012– _(verified: appears in the quote below)_

## What the source says

> Canon EF-M-mount | 18.00 mm | Mirrorless | APS-C | 2012–

## What briansmith.com says

> Canon EF-M-mount | 18.00 mm | Mirrorless | APS-C

Source: https://briansmith.com/flange-focal-distance-guide/

## Source

- https://en.wikipedia.org/wiki/Flange_focal_distance
- https://briansmith.com/flange-focal-distance-guide/

Last verified: 2026-08-13. Review by: 2028-08-12.
Part of [Camera mount flange focal distance and adapter feasibility](https://referencesource.org/camera-lens-body-adapter-compatibility/).