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Extended holiday returns
FREE refund/replacement until Jan 31, 2026 Learn more
FREE refund/replacement until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
Only 1 left in stock, order soon!
Arrives
Thursday, Dec 25
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Features
- Standard mount adapter allows EF/EF-S Lens compatibility with the EOS R camera system, including the EOS R, EOS RP, EOS R5, and EOS R6
- Built-in control ring provides quick access to camera functions
- Exterior design matched to EF lenses
- Dust- and water-resistant
- Metal mount on both Lens and camera sides provides rugged flexibility
Description
The new Canon standard mount Adapter allows for EF/EF-S lens compatibility with the new EOS R mirrorless Digital Camera system.
Product Dimensions: 2.9 x 2.9 x 0.9 inches
Item Weight: 4.6 ounces
Item model number: 2972C001
Is Discontinued By Manufacturer: No
Date First Available: September 4, 2018
Manufacturer: Canon Cameras US
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Dec 25
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Allows use of all your EF lenses on your RF mount camera. Seamless function, no degradation of image.
Reviewed in the United States on December 15, 2025 by Bryan B.
I’ve been using the Canon EOS to RF lens converter (EF-EOS R Mount Adapter) for a several months now, and it’s been an absolute blessing. As someone with a collection of high-quality EF glass, I wasn’t ready to part with my lenses when upgrading to a mirrorless camera (and I mean buying all new mirrorless lenses to replace them would be pretty pricy). This adapter made it so I didn’t have to!! The adapter works seamlessly. There’s no noticeable loss in image quality, autofocus remains fast and accurate, and all lens functions seem to carry right over . Using the old lenses on an mirrorless is actually a bit of an unexpected treat with the advanced functions of the newer camera. The only con I have is that it adds a bit of length to the build but otherwise totally worth the reasonable price.
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Reviewed in the United States on July 8, 2025 by Lynn C
Nice adapter. Now I can save money on lenses without sacrificing too much if any quality. It's not that noticeable but looks good. It fits on camera perfect. The control ring is placed a little odd but still useful. I like to assign ISO to it. Saves time and money what more could you ask for?
Reviewed in the United States on November 28, 2025 by Mohan1
It arrived in perfect condition. It is a quality Canon product, that is made of metal instead of some cheap feeling plastic that some 3rd party clones use, and feels quite beefy. It seats firmly on both the camera mount side, and on the lens mount side. ALL of my EF Canon L series lenses and Sigma Art lenses, work flawlessly. The focus is fast, and tack sharp. The integrated control ring works fine. When turning it, it is detented in function. So you feel each little click as it turns. I have programed it via the camera menu to function as an ISO adjustment, and as an exposure compensation adjustment.
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Reviewed in the United States on May 15, 2024 by James L Wilkinson
Fantastic. Works great and lets me use all my EF lenses with my R5. Built solidly and works with no interference in photo quality. Highly recommend.
Reviewed in the United States on November 19, 2025 by Adam H
Love this adapter. I wanted to go out of my way and get the more expensive option for the lens adapter when getting my Canon R5 to use my L series EF lenses. The performance is awesome and the added control ring feature (completely customizable) is AWESOME. I know it's pricey guys, but if you're going to be using EF lenses on your RF mount, just do yourself a favor and get the best quality option so you can at least have the closest thing to an actual RF lens. If it's not necessary for you, I get it, but I have so many friends who use off brand adapters, and it just ruins the performance of the lenses. Not to mention, this adapter looks so DOPE on my R5... it doesn't even feel like I'm using an adapter, it genuinely feels like an extension of my camera! :)
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Reviewed in the United States on February 24, 2024 by KalebThurman
Reasoning for the 4 instead of 5 stars will be at the end of the review. This adapter is awesome. I recently purchased a canon r7. With the r7 being a asp-c sensor camera there aren't a large amount of ef mount lenses designed for crop sensor cameras. This adapter opens up a whole new world of lenses for any crop sensor user. Sigma has numerous lenses made for asp-c sensors. The reasoning I gave 4 stars is that with the sigma 70-200 f2.8 lens (heavy lens) their isn't 100% complete stability. If I grab my camera body and out a hand on my lens, I can every so slightly wiggle the lens back and forth on the mount. (Mind you when I say slightly it's legit like minimal movement, but there is still movement) unsure if it's the mount I get or if they all would do this. But besides that great product.
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Reviewed in the United States on July 6, 2024 by Logan Thomas Dane Logan Thomas Dane
This is a well built, well fitting, well made adapter so you can use cheaper lenses. It weighs nothings and works with RF mount. Compatible with EF and EFs lenses. Was tempted to buy third party ones but thankfully I stuck to the canon. Would recommend
Reviewed in the United States on November 21, 2025 by Godslove Godslove