Extending the range of compatible lenses, the Canon Control Ring Mount Adapter EF-EOS R is a unique lens adapter designed for attaching any EF or EF-S-mount lens to the EOS R mirrorless digital camera. This sophisticated adapter incorporates a customizable Control Ring, the same as that on native RF-mount lenses, for intuitively adjusting exposure settings, such as ISO, aperture, and exposure compensation. This ring provides tactile feedback when being turned, making it easy to recognize and control your settings adjustments. It also retains full autofocus and image stabilization capabilities and contains no optical components, thereby maintaining the original optical quality of the mounted lens. Additionally, it is dust- and water-resistant, making it suitable for use in harsh weather conditions.
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Key Features
- Canon EF/EF-S Lens to EOS R Camera
- Maintains AF and Image Stabilization
- Configurable Control Ring
- Dust- and Water-Resistant
Extending the range of compatible lenses, the Canon Control Ring Mount Adapter EF-EOS R is a unique lens adapter designed for attaching any EF or EF-S-mount lens to the EOS R mirrorless digital camera. This sophisticated adapter incorporates a customizable Control Ring, the same as that on native RF-mount lenses, for intuitively adjusting exposure settings, such as ISO, aperture, and exposure compensation. This ring provides tactile feedback when being turned, making it easy to recognize and control your settings adjustments. It also retains full autofocus and image stabilization capabilities and contains no optical components, thereby maintaining the original optical quality of the mounted lens. Additionally, it is dust- and water-resistant, making it suitable for use in harsh weather conditions.
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Canon 2972C002 Overview
UPC: 013803304893
Canon 2972C002 Specs
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| Electronic Communication | |
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Canon 2972C002 Reviews
Natural transition to RF from EF camera bodies
By c
Rated 5 out of 5
Date: 2026-09-15
I piled up the EF lenses (9) with some 5D2 then 5D4, so while the R52 body was pricey, I needed no lenses because of the adapter. And after a little research I bought the control ring and it is a dream. This is because I learned on film, with the aperture control on the lens, and that is what I have the ring set. Very natural in maual to roll the aperture with the left hand, shutter with the index finger, really a joy to use.
Nice and old-fashioned
By Mark
Rated 5 out of 5
Date: 2026-06-16
New RF body. Several favorite EF lenses. What's the dream? Aperture priority WITH aperture set from the barrel. Like way back in the film days. Do a control-ring setting, and assemble the adapter on the lens, and that pairing onto the body. Now, bracketing the aperture for the flower shot is hand-on-the-big ring. Shooting pictures has become old-fashioned fun again.
See any errors on this page?
Does the control ring mount adapter come with ...
Does the control ring mount adapter come with dusk covers for the RF and EF sides? Or are they separately purchased?
No dust covers
Date published: 2023-10-23
Will this adapter work in Video mode or just ...
Will this adapter work in Video mode or just Photo mode?
This adapter works in both Photo and Video mode.
Date published: 2021-03-16
Will this adapter work well with EF Canon 600mm ...
Will this adapter work well with EF Canon 600mm III lens ?
Yes, the Canon Control Ring Mount Adapter EF-EOS R can work with a Canon EF 600mm III Lens.
Date published: 2022-06-08
Is this adapter compatible with sigma art lenses ...
Is this adapter compatible with sigma art lenses and maintain all auto focus and servo features?
This adapter is made specifically canon lenses
Date published: 2022-04-06
Will this work with the Canon C70?
Will this work with the Canon C70?
No, it is used to connect Canon ef lenses to their mirrorless cameras Eos R,R5,R6
Date published: 2022-02-22
will this control ring adapter fit my canon lens ...
will this control ring adapter fit my canon lens EF 28-300mm?
The adapter should work with any EF type Canon lens.
Date published: 2021-05-20
The instructions say to mount the lens first to ...
The instructions say to mount the lens first to the adapter then the adapter to the camera and when removing, first detach the adapter from the camera. Is there a problem leaving the adapter on the camera when changing EF lenses?
Thee could be. Please follow the mounting and dismounting procedure outlined by the manufacturer to avoid any damage.
Date published: 2020-05-28
Will this adapter work to mount my canon EFS ...
Will this adapter work to mount my canon EFS 55-250 lens to my canon EOS 5dsr ? I don't see it in the compatibility list
This adapter is only for use with Canon EF-S and EF DSLR lenses being attached to Canon's EOS R mirrorless camera mount. There isn't a way to attach an EF-S lens to an EF mount.
Date published: 2021-08-29