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Canon Mount Adapter EF-EOS R

BH #CAMAEFRF • MFR #2971C002
Canon Mount Adapter EF-EOS R
Key Features
  • Canon EF/EF-S Lens to EOS R Camera
  • Maintains AF and Image Stabilization
  • Dust- and Water-Resistant
Extending the range of compatible lenses, the Canon Mount Adapter EF-EOS R is a lightweight, compact lens adapter designed for attaching any EF or EF-S-mount lens to the EOS R mirrorless digital camera. This simple adapter retains full autofocus and image stabilization capabilities and contains no optical components, thereby maintaining the original optical quality of the mounted lens. It is also dust- and water-resistant, making it suitable for use in harsh weather conditions.
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$99.00
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Canon 2971C002 Overview

Extending the range of compatible lenses, the Canon Mount Adapter EF-EOS R is a lightweight, compact lens adapter designed for attaching any EF or EF-S-mount lens to the EOS R mirrorless digital camera. This simple adapter retains full autofocus and image stabilization capabilities and contains no optical components, thereby maintaining the original optical quality of the mounted lens. It is also dust- and water-resistant, making it suitable for use in harsh weather conditions.

UPC: 013803304886

Canon 2971C002 Specs

Adapter
Camera MountCanon RF
Lens MountCanon EF, Canon EF/EF-S
Physical
Dimensionsø: 2.8 x H: 0.9" / ø: 71.2 x H: 24.0 mm
Weight3.88 oz / 110 g
Packaging Info
Package Weight0.57 lb
Box Dimensions (LxWxH)5.4 x 4.7 x 3.3"

Canon 2971C002 Reviews

Adaptador de montura Canon EF-EOS R

By Alejandro
Rated 5 out of 5
Date: 2022-09-22

adaptador

Keeping Your EF Lenses

By Edward
Rated 5 out of 5
Date: 2022-09-15

It is an adaptor that clearly does its job. Keeping your EF lenses aligned with a Canon R body while also maintaining all electronic communications between the lens and the body. It has delivered seamless performance and with no moving parts will probably last forever.

Must have if you already invested in EF lineup!

By Robert
Rated 5 out of 5
Date: 2022-09-15

Works flawlessly with numerous EF mount lenses if have used. Adds very little weight or length to the camera when using.

Smooth connection!

By Angela
Rated 5 out of 5
Date: 2022-09-14

I'm working my way into Canon Mirrorless, and this piece will allow me to utilize the lenses I've acquired over the years with Canon DSLR systems.

Increase len options for EOS R5

By Zach
Rated 5 out of 5
Date: 2022-09-13

This adapter increased my lens options for the EOS R6. Worked great!

EF-EOS R

By William
Rated 5 out of 5
Date: 2022-09-12

Works great

Thanks Canon

By Scott
Rated 5 out of 5
Date: 2022-09-22

Thanks to Canon for providing an adaptor that prevents the obsolescence of the EF system. The adaptor works well for the 100-400 L II and the Tamron 150-600 G2.

Works 100%

By Marcos Paulo
Rated 5 out of 5
Date: 2022-09-16

Works 100%

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What is the difference between this mount ...

What is the difference between this mount converter and the Control Ring Mount Adapter?
Asked by: Katie
One has the control ring which is useful but not necessary, and one is without.
Answered by: Kenneth
Date published: 2021-10-10

Is there any rotational play/wiggle/slack with EF ...

Is there any rotational play/wiggle/slack with EF lenses with this adapter, or is the adapter tight and doesn't have any play?
Asked by: Thatcher
ABSOLUTLEY NOT! On multiple lenses from 16-35mm ef to my 400mm f2.8. I bought 2 since I have a lot of L series Ef lenses! Image quality up to 24-36 enlargement does not seem affected.
Answered by: Gerold
Date published: 2022-04-23

I have a EF mount. Can this be used on that to ...

I have a EF mount. Can this be used on that to use my efs lenses?
Asked by: Matt
Yes. EFS lenses mount just fine and work great on the EOS R.
Answered by: Dale
Date published: 2020-08-07

Will a Canon E mount lens work with this?

Will a Canon E mount lens work with this?
Asked by: KEITH
This adapter is meant to be used with Canon "EF" and "EF-S" mount lenses, including third party lenses (Sigma, Tamron etc.). FYI - "E" mount is associated with Sony's mirrorless l cameras.
Answered by: Ranjit
Date published: 2022-09-11

Will this Adapter be compatible with the R5 R6 & ...

Will this Adapter be compatible with the R5 R6 & EF L lenses?
Asked by: Anonymous
Yes, I use it on an EOS and it works great. Canon also makes additional adapters for EF lease on the EOS R cameras, one that adds a control dial and one that allows for drop-in filters.
Answered by: Kevin
Date published: 2020-08-21

will this work with the R3 ?

will this work with the R3 ?
Asked by: Sherman
Yes
Answered by: Erich
Date published: 2021-08-04

Can I use this adapter on a Canon mark 5d iv to ...

Can I use this adapter on a Canon mark 5d iv to mount Canon RF 35mm f/1.8 IS Macro ?
Asked by: karla
No. You are not able to adapt RF lenses to EF cameras due to the significant difference in flange focal distance. This adapter is for the reverse (EF lenses to RF cameras).
Answered by: Jeremy
Date published: 2021-10-31

The EF Sigma 35mm 1.4 Art is loose when attached ...

The EF Sigma 35mm 1.4 Art is loose when attached to this adapter. There is some play when handling the lens while it is attached. Is this an isolated issue or is this an issue with all EF lenses when attached to this adapter?
Asked by: Tarik
The adapter was designed to mount the Canon EF lenses on it with a close tolerance so there would me no movement between the lens and the adapter. Each manufacturer will have a "different" tolerance than what the Canon tolerance will be and that could be the problem. You might try your other "third party EF mounts" and see if they have the same "looseness" as your Sigma 35mm f1.4 Art lens. If they are tight then it is the lens and not the EF-EOS R adapter.
Answered by: Robert
Date published: 2021-03-23
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