# B4 2/3″ TV bayonet mount — Camera mount flange focal distance and adapter feasibility

For B4 2/3″ TV bayonet mount, flange focal distance (mm) is 48.00 mm; mount type is TV; format is 2/3″ 3-CCD, verified against its source on 2026-08-13.

- **Mount name:** B4 2/3″ TV bayonet mount _(verified: appears in the quote below)_
- **Flange focal distance (mm):** 48.00 mm _(verified: appears in the quote below)_
- **Mount type:** TV _(verified: appears in the quote below)_
- **Format:** 2/3″ 3-CCD _(verified: appears in the quote below)_

## What the source says

> B4 2/3″ TV bayonet mount | 48.00 mm | TV | 2/3″ 3-CCD

## Source

- 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/).