Used Canon Mount Adapter EF-EOS R

SKU: US1956951 MFR: 2971C002
$120.00
New: $139.00
Used Savings: $19 (14%)
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  • This used item comes with a free 180-day warranty. ?
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Reviews about this item

Review Summary

2025-05-29T20:00:00

Rated 5 out of 5

Love this piece!

Decent price for just the adapter, love the versatility it adds to EOS R camera line, being able to use the high-quality EF lens I have on this camera is absolutely amazing!

N A.

2025-03-20T06:05:29

Rated 5 out of 5

Does exactly what it promises

Does exactly as promised, allows you to use EF glass on RF mount cameras. Tried it with Canon, Tamron and Sigma lenses on my R5 Mark II and all lenses worked exactly as they did on my old 90D, even autofocus. Very inexpensive compared to other mount adapters. A must-have for RF mount owners - it opens up a world of EF lenses to use.

GUY I.

2025-03-19T13:19:42

Rated 5 out of 5

Buy several!

Works like a charm! Great to use my EF lenses and saving on all new glass!

CHARLES L.

2025-03-09T06:04:22

Rated 5 out of 5

Awesome

It works perfectly and is a real asset so I can continue to use my EF lenses.

RICK G.

2025-01-19T03:52:50

Rated 5 out of 5

No issues at all!

Brand new and no issues. Super fast shipping!

Wes C.

2025-01-07T07:07:05

Rated 5 out of 5

Works Well

using te adapter wit EF lenses. Works great with no loss of IQ

TOM T.

2024-12-18T09:03:55

Rated 5 out of 5

Exactly as advertised

Extremely fast shipping. Arrived well-packed, and completely as advertised. Highly recommend Adorama.

SCOTT Y.

2024-12-17T19:00:00

Rated 5 out of 5

Works great

Works perfectly, I just wish it wasnt so long but I understand they had a reason.

Thomas W.

2024-11-24T19:00:00

Rated 5 out of 5

Great adaptor.

Well made. Great interface between the EOS lenses and R Bodies. I have one on my R and my R5.

Grayden A.

2024-10-04T08:59:19

Rated 5 out of 5

Perfect

Works perfectly

luiz l.

2024-09-25T11:57:43

Rated 5 out of 5

Great.

Worked as expected.

DORINDA P.

2024-09-11T20:00:00

Rated 5 out of 5

Ref Mount Adapter EF-EOS R

Refurbished product but works great. Item is in great shape

Nash

2024-08-18T20:00:00

Rated 1 out of 5

Piece of plastic connecting my R5 to heavy EF lens :(

Movement with heavy lens is concerning. Lots of plastic and the wiggle in connection concerns me, especially since I shoot action. But if this is what it takes to use my old EF lens then will make do. Not happy that their is no third party options for RF... Not all of us can afford $2000/$3000 glass.

Boogey

2024-06-13T16:29:46

Rated 5 out of 5

Works

Works fine.

MICHAEL T.

2024-06-07T20:00:00

Rated 5 out of 5

EF to R lens adapter - OK EF, not Tamron

A mount adapter that permits long-tern Canon camera users to use those EF lens's, some that are excellent and quite expensive, with your new R5 camera body. A simple job to do, and it seems to work OK with my EF lens, but my nice Tamron ultra-wide angle lens is not usable due to strong vignetting.

photon

2024-03-25T15:10:07

Rated 5 out of 5

Adapter Is Multipurpose - Lenses and Scopes

Since I was upgrading to the R series from my old Rebel, I wanted to be able to use some of my older lenses. This adapter adds a bit of extra length to the whole thing, but it works great! I mostly have one telephoto zoom that I will be using it for, but it was far less expensive than buying the same lens in the R mount. Maybe someday. I also have a Celestron spotting scope that I wanted to be able to shoot through, since I have an adapter for Canon that only supports the EF lenses. By adding this adapter to it, I can mount the R8 onto the scope just fine.

Laura K.

2024-03-19T08:33:24

Rated 5 out of 5

Now all my older glass works with my new camera

This is a lifesaver for me since I've upgraded to Mirrorless. I have lots of expensive lenses for my DSLR and I was worried that upgrading to mirrorless would force me to have to buy all new lenses. This works great. Communication between EF lenses and EOS R lenses is quick. No loss of Autofocus or lens controls.

Rebecca R.

2024-03-14T14:20:17

Rated 5 out of 5

You need it if you want to use your EF lenses on the R mirrorless cameras

Works just fine.

Joseph M.

2024-01-22T13:33:23

Rated 4 out of 5

Works good for EF to RF lens

It works as advertised.

Gregory S.

2024-01-22T07:37:51

Rated 5 out of 5

The Canon Mount Adapter works as described.

It works seamlessly with my EF lenses. There is no conceivable lag in the AF responsiveness.

WARD F.

2024-01-10T11:06:50

Rated 5 out of 5

Exactly what's needed for EF glass.

Does exactly what I need it to. Very high quality and its never left my camera. I would eventually toss it or hardly use it if I ever invest in RF glass, but it never leaves my body and serves its purpose.

Drake B.

2024-01-03T19:00:00

Rated 5 out of 5

Works fine

I was gifted an R7 to replace my 77D. I don't have the funds currently to buy new lenses so I bought the adapter so that I could use what I have. I haven't used it much, shot some wildlife photos while on vacation. It worked fine for that.

CM757

2024-01-02T19:00:00

Rated 5 out of 5

Rf-Ef adapter

Easy to use. Works as it should. Allows me to use my EF glass on my R50

Dee D.

2023-12-21T09:20:36

Rated 5 out of 5

It just works!

Works fine allowing me to use all of my EF lenses on my R5.

Gary P.

2023-12-15T05:22:01

Rated 4 out of 5

Good product

It does what it is supposed to do and seems to be sturdy and dependable.

MATT A.

2023-12-14T05:46:35

Rated 5 out of 5

It does what it should

Everything works as it should. Seamless.

JOSH P.

2023-11-13T06:10:05

Rated 5 out of 5

Adorama... my go to for anything photography

Made mistake of buying non-Canon connector and had issues with AF. Adorama has been my store since the early 2000's. Always go back for professional advice and great deals.

GRETCHEN F.

2023-11-01T20:00:00

Rated 5 out of 5

Keep your current lens collection, upgrade to mirrorless

Once you align the correct dots, it fits snug and secure.

Dwayne P.

2023-10-01T20:09:34

Rated 5 out of 5

One for each lens

I have three EF lenses left in my bag and an EF-EOS R adapter on each one. I do not have to swap or remember to bring one.

PETER P.

2023-09-28T10:12:18

Rated 5 out of 5

works well

the adaptor works seemlessly with the canon L series and sigma sport lenses I've tried it with. it doesn't seem to have any impact on their speed.

ASHLEY J.

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About Canon Mount Adapter EF-EOS R

FEATURED REVIEWS

My EF lenses are better than ever!

By BDP

This works great with my EF lenses, and except for the added length they feel like native RF glass. The only lens I felt compelled to replace was the V1 of the 70-200 IS 2.8 L - because the RF version is lighter and shorter and sharper (and the adapter makes the EF even more front heavy). Since I am currently using a 5d IV for a backup this will allow me to use the rest of my lenses until I jump into mirrorless with both feet.

R Mount Works well with EF Lenses

By Billy I.

R Mount to EF works Great. Ive had no problems at all.

Canon Mount Adapter EF-EOS R

While the Canon EOS R mirrorless system already comes with four stellar lenses, having the ability to use all the other Canon lenses in your arsenal is the best way to take full advantage of the EOS R mirrorless camera. To help you expand the number of compatible lenses for Canon’s first full-frame mirrorless workhorse, the Mount Adapter EF-EOS R facilitates a seamless connection between any EF or EF-S lens and the new RF lens mount. This lightweight and highly compact adapter, which offers the same dust and weather sealing as the L-series lenses, allows for limitless creativity with your EOS R by giving you full access to the plethora of EF and EF-S lenses available on the market.

MOUNT ADAPTER EF-EOS R

Lightweight and compact, the Mount Adapter EF-EOS R connects EF and EF-S lenses to the EOS R camera, exponentially expanding the list of compatible lenses.

MOUNT ADAPTER EF-EOS R

Explore the limitless potential of your Canon EOS R camera with the high-quality Mount Adapter EF-EOS R. This durable and reliable adapter is designed to seamlessly connect EF and EF-S lenses to the EOS R camera system, significantly broadening your lens compatibility options.

Engineered for optimal performance, this versatile adapter maintains full communication between the camera and lens, allowing you to control aperture, shutter speed, and other critical settings. Whether you're using your EF-200-400L 1.4x, 24-70L, or 70-200L lens, this adapter ensures flawless operation, as testified by numerous satisfied users.

Ideal for full-frame mirrorless cameras like the Canon EOS R, this adapter is not just a connector, but a gateway to a wider range of photographic possibilities. With its compact and lightweight design, it's easy to carry along on any shoot, making it a must-have accessory for every Canon EOS R camera owner.

Choose the Mount Adapter EF-EOS R for its compatibility with a wide range of Canon lenses and its ability to enhance your EOS R camera system's functionality. Experience the difference in your photography with this reliable, high-quality adapter.

Canon Mount Adapter EF-EOS R Features

  • Mount Adapter Allows EF/EF-S Lens Compatibility with the EOS R Camera.
  • Exterior Design Matched to EF Lenses.
  • Dust- and Water-resistant.
  • Metal Mount on Both Lens and Camera Sides Provide Rugged Flexibility

Warranty Information

This used item has a FREE 180-day warranty. See details.