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

For Olympus Four Thirds System, flange focal distance (mm) is 38.67 mm; mount type is SLR; format is 4/3"; production years is 2003–2017, recorded from its source on 2026-08-13.

- **Mount name:** Olympus Four Thirds System
- **Flange focal distance (mm):** 38.67 mm _(verified: appears in the quote below)_
- **Mount type:** SLR _(verified: appears in the quote below)_
- **Format:** 4/3" _(verified: appears in the quote below)_
- **Production years:** 2003–2017 _(verified: appears in the quote below)_

## What the source says

> Four Thirds System | 38.67 mm | SLR | 4/3" | 2003–2017

## What briansmith.com says

> Olympus Four Thirds System | 38.67 mm | SLR |

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/).