Player One M54M-M48M 2mm Adapter

Overview

The Player One M54M-M48M 2mm Adapter is a machined threaded coupler that joins an M54×0.75 male fitting to an M48×0.75 male fitting while adding 2 mm to the optical path. It is a purely mechanical part with no glass and no electronics, made from aluminum 6061-T6.

Who It's For

This is a good match if you are stepping an M54 connection down to an M48 connection in an imaging train, or need a short, fixed 2 mm spacer between M54 and M48 components.

Key Features & Design

• M54 to M48 thread conversion: M54×0.75 male on one side, M48×0.75 male on the other.
• 2 mm optical length: adds a fixed 2 mm between the connected components.
• Aluminum 6061-T6 body: light, corrosion-resistant, and dimensionally stable.
• Fully mechanical: no optical elements and no electrical connection.

Recommended Uses

Use it to bridge an M54-threaded section of an imaging train to an M48-threaded section, and where 2 mm of added length helps reach a target backfocus.

Compatibility & Accessory Notes

The adapter fits standard M54×0.75 and M48×0.75 threads. Because it is a fixed-length coupler, include its 2 mm in your total backfocus calculation. If you are not sure how it fits your imaging train, send us your camera, filter, and spacer setup and we will work out the numbers with you.

Good to Know Before You Order

• Mechanical adapter only: it carries no optical elements and passes no electronic signal.
• Male on both sides: both ends are male threads, so the mating components need matching female threads.
• Fixed 2 mm length: the spacing it adds is set and not adjustable.

Frequently Asked Questions

Is it difficult to set up?

No — it threads directly onto standard M54 and M48 fittings by hand and needs no tools or adjustment.

What is it best used for?

Joining an M54 male fitting to an M48 male fitting and adding a fixed 2 mm to the optical path.

Does it contain any optics?

No. It is a bare mechanical coupler with no lenses or coatings.

Will it change my backfocus?

Yes — it adds 2 mm, which you should include in your spacing total.

Bottom Line

In short: a compact aluminum M54-male to M48-male coupler that adds a fixed 2 mm to the optical path, for cleanly bridging M54 and M48 sections of an imaging train.