# B4-mount — Camera mount flange focal distance and adapter feasibility

For B4-mount, flange focal distance (mm) is 48.00; mount type is TV; format is 2/3" 3-CCD (9.6×5.4 mm); production years is 1992–, verified against its source on 2026-08-13.

- **Mount name:** B4-mount _(verified: appears in the quote below)_
- **Flange focal distance (mm):** 48.00 _(verified: appears in the quote below)_
- **Mount type:** TV _(verified: appears in the quote below)_
- **Format:** 2/3" 3-CCD (9.6×5.4 mm) _(verified: appears in the quote below)_
- **Production years:** 1992– _(verified: appears in the quote below)_

## What the source says

> B4-mount | 48.00 mm | TV | 2/3" 3-CCD (9.6×5.4 mm) | 1992– | | | | | Mount was in use since at least 1978, wasn't officially standardized until 1992. |

## 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/).