# Sony E-mount — Camera mount flange focal distance and adapter feasibility

For Sony E-mount, flange focal distance (mm) is 18.00 mm; mount type is Mirrorless; format is 24×36 mm; production years is 2010–, recorded from its source on 2026-08-13.

- **Mount name:** Sony E-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:** 24×36 mm
- **Production years:** 2010– _(verified: appears in the quote below)_

## What the source says

> Sony E-mount | 18.00 mm | Mirrorless | APS-C | 2010–

## Sources disagree

More than one authority states this, and they do not state the same
thing. Both are reproduced with the source each came from.

### Format

en.wikipedia.org says format is **24×36 mm**, as of 2026-08-13.

> Sony E-mount | 18.00 mm | Mirrorless | APS-C | 2010–

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

briansmith.com says format is **24X36 mm / APS-C**, as of 2026-08-13.

> Sony E-mount | 18.00 mm | Mirrorless | 24X36 mm / 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/).