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M39 Lens Mount to Canon RF Camera Mount

Explore new combinations
Rated 5.0 out of 5
Based on 2 reviews

Combine any M39 mount lens with any Canon RF mount camera body.

$89 CAD

Combine any M39 mount lens with any Canon RF mount camera body.

$89 CAD


Experiment with new lens combinations and pair any M39 mount lens with your Canon RF mount camera.

Our M39-RF Lens Mount Adapter is manual so most automatic functions – aperture, autofocus, AE metering and image stabilization – must be adjusted manually. Exposure settings need to be set manually too.


  • 2.51kg CO2 created

  • 307.5kg CO2 sequestered

  • 600x positive impact

To find out more information about the impact of this Urth product, view our Life Cycle Analysis (LCA) report here


Free standard shipping within Canada.

Standard shipping: 3-7 days.
Express shipping: 1-3 days.

Please allow an extra 2 days for regional areas.


30-day returns.

Shop with confidence knowing you can return products within 30 days of purchase.

Sale items are non-refundable unless faulty.

M39 Lens Mount to Canon RF Camera Mount

New combinations

Utilise different lenses.

Snug fit

Our consciously designed adapters have no light leakage and a secure connection.

Clever details

Anti-reflection matte black finish.

Lifetime warranty

Quality made to last.

M39 Lens Mount to Canon RF Camera Mount


M39 Lens Mount to Canon RF Camera Mount

Hardened aluminium

Clever design, durable materials guaranteed for life.

M39 Lens Mount to Canon RF Camera Mount

Perfect fit

Designed for a safe, snug fit every time.

M39 Lens Mount to Canon RF Camera Mount

Infinity focus

Manual focus through full range to infinity.

How to Use

M39 Lens Mount to Canon RF Camera Mount


Set your camera to manual
1. Go to Menu > Camera Function > Menu No. 5 and select 'Release shutter w/o lens' ON. 2. Press 'MODE' button on top of the camera and select either Manual "M", or Aperture Priority Mode "AV".
M39 Lens Mount to Canon RF Camera Mount


Connect to lens
Carefully align threads until screwing clockwise flows easily and effortlessly. Tighten until snug.
M39 Lens Mount to Canon RF Camera Mount


Connect to camera body
Consciously align the red dot on the adapter with the white dot on the camera body. Place your connected lens and adapter inside your camera body and rotate clockwise.
M39 Lens Mount to Canon RF Camera Mount


Remove from camera
Tenderly press your camera's lens release button and rotate adapter and lens counter-clockwise.
M39 Lens Mount to Canon RF Camera Mount


Remove from lens
Definitively unscrew lens from adapter by rotating counter-clockwise.

Want some more in-depth info?


How to Use a Lens Adapter

An informative lesson explaining when and how to use a lens adapter on your ...


Frequently Asked Questions

Can I change my aperture when using this lens mount adapter?

Only if your lens has a manual aperture control ring.

If you use a lens with electronic aperture and no manual control ring, because this lens mount adapter is fully manual, your aperture would remain at its maximum aperture (lowest f-stop).

What is a lens mount adapter?

A lens adapter allows you to attach a different brand of lens to your camera body, letting you use an otherwise incompatible lens with your camera.

How do I find the right lens adapter for my lens and camera?

Find your lens mount and your camera mount.

The easiest way to find and confirm your lens mount is to know the mount of the camera it was used on originally. A quick internet search of the camera model followed by lens mount is a sure way to confirm what lens mount you need. For example if you have an old Nikon lens and you know it was used on a Nikon FM2, you can easily find that the lens has a Nikon F-mount. This is particularly useful for lenses that are made for different mounts i.e Sigma and Tamron bring out the same lens with different mounts including EF, F, E so knowing the camera the lens was used on is a good shortcut.

If you have an old second hand lens and you are unsure of the camera it was made for, take all the known details of the lens and search the web.

Why buy a lens mount adapter?

To utilise quality old lenses with your new camera, or match a different make of lens to your camera.

There are countless creative experiments to be explored by mixing different brands of lenses with your camera body. Lens adapters can also help your existing collection of lenses go further with any new cameras you collect. So you can invest in a new camera and make the most of your favourite lenses.

How do you use a lens mount adapter?

Find a detailed how to for each filter at the base of its product page.

In summary, attach your lens to the adapter, and then your adapter to your camera body. Put all settings on your lens and camera into manual mode, and select ‘shoot without lens’ in your camera settings.

When should I use a lens mount adapter?

Whenever you want to use a different make of lens with your camera body.

Because you need to use your camera in full manual mode, you may need to familiarise yourself with this before shooting. You’ll soon work out which lenses you enjoy using with your camera. Analogue lenses can provide professional quality glass at a fraction of the cost of modern lenses so lens adapters can help you shoot with better lenses for less.

average rating 5.0 out of 5
Based on 2 reviews
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100% of reviewers would recommend this product to a friend
Customer photos and videos
2 Reviews
Reviewed by Frank H.
Verified Buyer
I recommend this product
Years Experience
  • Documentary
  • Studio
  • Fashion
  • Video
  • Travel
Rated 5 out of 5
Review posted

Very pleased

Solid, well-made, works as intended and was shipped quickly. Thank you!

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Reviewed by Diederik W.
Verified Buyer
I recommend this product
Years Experience
  • Lifestyle
  • People
  • Studio
  • Outdoor
Rated 5 out of 5
Review posted

I can finally use my Jupiter on infinity!

I once bought an M39 adapter for my EF fitted camera and could only use my Jupiter (and other lenses) from a 50mm distance to the subject. Fun for insects but not much for portraits.

Now, with my Urth M39 to RF adapter, I witnessed the beauty that is the bokeh of the Jupiter for the first time on infinity focus and I’m stoked!!!

The Urth products look slick, feel well and work even better. And the fact that they help you help the planet is a very nice big bonus to that!

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