# Micro Four Thirds System — Camera mount flange focal distance and adapter feasibility

For Micro Four Thirds System, flange focal distance (mm) is 19.25 mm; mount type is Mirrorless; format is 4/3"; production years is 2008–, verified against its source on 2026-08-13.

- **Mount name:** Micro Four Thirds System _(verified: appears in the quote below)_
- **Flange focal distance (mm):** 19.25 mm _(verified: appears in the quote below)_
- **Mount type:** Mirrorless _(verified: appears in the quote below)_
- **Format:** 4/3" _(verified: appears in the quote below)_
- **Production years:** 2008– _(verified: appears in the quote below)_

## What the source says

> Micro Four Thirds System | 19.25 mm | Mirrorless | 4/3" | 2008–

## Source

- https://en.wikipedia.org/wiki/Flange_focal_distance

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/).