# Nikonos — Camera mount flange focal distance and adapter feasibility

For Nikonos, flange focal distance (mm) is 39.00 mm; mount type is underwater; format is 24x36 mm; production years is 1963-2001, verified against its source on 2026-08-13.

- **Mount name:** Nikonos _(verified: appears in the quote below)_
- **Flange focal distance (mm):** 39.00 mm _(verified: appears in the quote below)_
- **Mount type:** underwater _(verified: appears in the quote below)_
- **Format:** 24x36 mm _(verified: appears in the quote below)_
- **Production years:** 1963-2001 _(verified: appears in the quote below)_

## What the source says

> Nikonos | 39.00 mm [ 13 ] | underwater | 24x36 mm | 1963-2001

## 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.

### Flange focal distance (mm)

en.wikipedia.org says flange focal distance (mm) is **39.00 mm**, as of 2026-08-13.

> Nikonos | 39.00 mm [ 13 ] | underwater | 24x36 mm | 1963-2001

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

briansmith.com says flange focal distance (mm) is **28 mm**, as of 2026-08-13.

> Nikonos | 28 mm | Underwater | 24X36 mm

Source: https://briansmith.com/flange-focal-distance-guide/


### Mount type

en.wikipedia.org says mount type is **underwater**, as of 2026-08-13.

> Nikonos | 39.00 mm [ 13 ] | underwater | 24x36 mm | 1963-2001

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

briansmith.com says mount type is **Underwater**, as of 2026-08-13.

> Nikonos | 28 mm | Underwater | 24X36 mm

Source: https://briansmith.com/flange-focal-distance-guide/


### Format

en.wikipedia.org says format is **24x36 mm**, as of 2026-08-13.

> Nikonos | 39.00 mm [ 13 ] | underwater | 24x36 mm | 1963-2001

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

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

> Nikonos | 28 mm | Underwater | 24X36 mm

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/).