Canon EF-EOS R Mount Adapter
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. 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.
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. 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.
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. 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.
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. 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.
in 49 offers
The lowest price for Canon EF-EOS R Mount Adapter right now is $92.96 at Unique Photo, compared across 32 retailers.
The all-time low was $79.00 on 6 Mar 2026 — today's price is 18% above the lowest ever. That's a little above the best price we've seen.
Prices last updated 29 Sept 2026.
Last updated at 29/09/2026 22:10:40
Lens Adapter, AF Adapter for Canon EF/EF-S Series Lenses to Canon EOS-R Cameras Including EOS RP R3 R5 R6 R6MarkII R7 R8 R10 R50 R100, Fast AF,
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Used Canon EF-EOS R Mount Adapter - Good
Delivery $42.94
EF-EOS R Lens Adapter, Auto Focus Mount Adapter for Canon EF/EF-S Lens to RF Mou
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
EF-EOS R Adapter for Canon EF/EF-S Lenses and Canon EOS R, RP, R5, R6, R7, R8, R10, R50, R100 Cameras
Delivery between 4–9 Oct $41
Canon EF-EOS R Mount Adaptor
Free delivery
Canon EF - EOS R Mount Adaptor
Delivery between 7–12 Oct $8.95
Canon Mount Adapter EF-EOS R
Free delivery between 7–14 Oct
Canon EF-EOS R EF Lens to RF Mount Adapter (Canon Malaysia)
Canon EF to EOS R Mount Adaptor at Etoren
Delivery $43
Canon EF-EOS R Mount Adapter for EF & EF-S Lens (Australian Stock)
Delivery between 1–13 Oct $13.25
originally posted on bhphotovideo.com
The Canon EF to RF adapter is extremely well made. The connection with the body as well as with the lens is securely tight. Before this, I was using the Viltrox EF to RF adapter as I had no choice since the Canon one was sold out everywhere for months. The difference is night and day. When I was using the Viltrox, there were many communication issues. The OS on my Sigma 150-600mm may or may not come on. If it didn't, I would have to toggle the switch between OS and off again. Likewise for shooting distance, I had to specify the range because FULL would not work. Eventually, after a few months of use the connection with the lens even became loose and it was giving me error readings. And now? The moment I put on the Canon adapter, my Sigma 150-600mm has been working ... MoreThe Canon EF to RF adapter is extremely well made. The connection with the body as well as with the lens is securely tight. Before this, I was using the Viltrox EF to RF adapter as I had no choice since the Canon one was sold out everywhere for months. The difference is night and day. When I was using the Viltrox, there were many communication issues. The OS on my Sigma 150-600mm may or may not come on. If it didn't, I would have to toggle the switch between OS and off again. Likewise for shooting distance, I had to specify the range because FULL would not work. Eventually, after a few months of use the connection with the lens even became loose and it was giving me error readings. And now? The moment I put on the Canon adapter, my Sigma 150-600mm has been working perfectly ever since. So, my advice is don't risk it with the 3rd party adapters, always go with Canon! And B&H has been absolutely excellent and lightning fast with the shipping. Hope that helps.
originally posted on bhphotovideo.com
This canon adapter has made it possible for me to use all of my lenses I have on my mirrorless camera body. The adapter firmly slides and connects to the RF mount on the canon body. The EF/EF-S lenses also attached pretty firm and snug, I haven't had any extra movement in my lenses while they are attached the the adapter. I haven't had any problems of communication between all of the camera and the lenses either. This adapter is definitely worth getting if people plan to upgrade cameras but don't plan to upgrade their lenses to the next gen RF mount.
originally posted on bhphotovideo.com
I recently purchased the Canon EOS R5 and wanted to wait to purchase the right RF lenses, so I purchased the adapter to use my current EF & EF-S glass in the meantime. When comparing this basic mount adapter to the adapter with the control ring, I chose to keep it simple. I decided I didn't need all the bells and whistles this time around, and I am very happy with the simplicity of this adapter. I plan on purchasing RF glass from here on out anyhow, and I would rather invest in the lenses than the upgraded adapter with a control ring. If you are someone who has a large collection of EF glass, then you may benefit from the control ring; however, if you are looking to spend less, the basic adapter is perfect and will compliment your needs just fine. It is easy to ... MoreI recently purchased the Canon EOS R5 and wanted to wait to purchase the right RF lenses, so I purchased the adapter to use my current EF & EF-S glass in the meantime. When comparing this basic mount adapter to the adapter with the control ring, I chose to keep it simple. I decided I didn't need all the bells and whistles this time around, and I am very happy with the simplicity of this adapter. I plan on purchasing RF glass from here on out anyhow, and I would rather invest in the lenses than the upgraded adapter with a control ring. If you are someone who has a large collection of EF glass, then you may benefit from the control ring; however, if you are looking to spend less, the basic adapter is perfect and will compliment your needs just fine. It is easy to attach to both the lens and camera mount, and it is lightweight. I also received this lightning fast; shipping through B&H is always so impressive! I ordered my camera body through Canon, and the next day I realized that I needed the adapter and CFexpress cards. I went online to B&H to order the card and adapter, and I received both in time before my camera arrived. I love this company, and I always have an absolutely positive experience with all my purchases.
| Is discontinued by manufacturer | No |
| Product dimensions | 7.11 x 7.11 x 2.29 cm; 110.56 Grams |
| Country of origin | Taiwan |
| Form factor | Mirrorless |
| Effective still resolution | 30.3 MP |
Lens Adapter, AF Adapter for Canon EF/EF-S Series Lenses to Canon EOS-R Cameras Including EOS RP R3 R5 R6 R6MarkII R7 R8 R10 R50 R100, Fast AF,
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Used Canon EF-EOS R Mount Adapter - Good
Delivery $42.94
EF-EOS R Lens Adapter, Auto Focus Mount Adapter for Canon EF/EF-S Lens to RF Mou
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
EF-EOS R Adapter for Canon EF/EF-S Lenses and Canon EOS R, RP, R5, R6, R7, R8, R10, R50, R100 Cameras
Delivery between 4–9 Oct $41
Canon EF-EOS R Mount Adaptor
Free delivery
The Canon EF to RF adapter is extremely well made. The connection with the body as well as with the lens is securely tight. Before this, I was using the Viltrox EF to RF adapter as I had no choice since the Canon one was sold out everywhere for months. The difference is night and day. When I was using the Viltrox, there were many communication issues. The OS on my Sigma 150-600mm may or may not come on. If it didn't, I would have to toggle the switch between OS and off again. Likewise for shooting distance, I had to specify the range because FULL would not work. Eventually, after a few months of use the connection with the lens even became loose and it was giving me error readings. And now? The moment I put on the Canon adapter, my Sigma 150-600mm has been working ... MoreThe Canon EF to RF adapter is extremely well made. The connection with the body as well as with the lens is securely tight. Before this, I was using the Viltrox EF to RF adapter as I had no choice since the Canon one was sold out everywhere for months. The difference is night and day. When I was using the Viltrox, there were many communication issues. The OS on my Sigma 150-600mm may or may not come on. If it didn't, I would have to toggle the switch between OS and off again. Likewise for shooting distance, I had to specify the range because FULL would not work. Eventually, after a few months of use the connection with the lens even became loose and it was giving me error readings. And now? The moment I put on the Canon adapter, my Sigma 150-600mm has been working perfectly ever since. So, my advice is don't risk it with the 3rd party adapters, always go with Canon! And B&H has been absolutely excellent and lightning fast with the shipping. Hope that helps.
This canon adapter has made it possible for me to use all of my lenses I have on my mirrorless camera body. The adapter firmly slides and connects to the RF mount on the canon body. The EF/EF-S lenses also attached pretty firm and snug, I haven't had any extra movement in my lenses while they are attached the the adapter. I haven't had any problems of communication between all of the camera and the lenses either. This adapter is definitely worth getting if people plan to upgrade cameras but don't plan to upgrade their lenses to the next gen RF mount.
I recently purchased the Canon EOS R5 and wanted to wait to purchase the right RF lenses, so I purchased the adapter to use my current EF & EF-S glass in the meantime. When comparing this basic mount adapter to the adapter with the control ring, I chose to keep it simple. I decided I didn't need all the bells and whistles this time around, and I am very happy with the simplicity of this adapter. I plan on purchasing RF glass from here on out anyhow, and I would rather invest in the lenses than the upgraded adapter with a control ring. If you are someone who has a large collection of EF glass, then you may benefit from the control ring; however, if you are looking to spend less, the basic adapter is perfect and will compliment your needs just fine. It is easy to ... MoreI recently purchased the Canon EOS R5 and wanted to wait to purchase the right RF lenses, so I purchased the adapter to use my current EF & EF-S glass in the meantime. When comparing this basic mount adapter to the adapter with the control ring, I chose to keep it simple. I decided I didn't need all the bells and whistles this time around, and I am very happy with the simplicity of this adapter. I plan on purchasing RF glass from here on out anyhow, and I would rather invest in the lenses than the upgraded adapter with a control ring. If you are someone who has a large collection of EF glass, then you may benefit from the control ring; however, if you are looking to spend less, the basic adapter is perfect and will compliment your needs just fine. It is easy to attach to both the lens and camera mount, and it is lightweight. I also received this lightning fast; shipping through B&H is always so impressive! I ordered my camera body through Canon, and the next day I realized that I needed the adapter and CFexpress cards. I went online to B&H to order the card and adapter, and I received both in time before my camera arrived. I love this company, and I always have an absolutely positive experience with all my purchases.
Of course this item is very necessary to be able to utilize my EF lenses with my RF camera. But I am pleased it works so well. My lenses have never rendered like they do with these new mirrorless cameras. As always, B&H does a wonderful job on getting the item out and to you safely. Receive something from Amazon, maybe a piece of bubble wrap. Receive a package from B&H like it was your grandmother's ashes. It's a win, win, even for a UPS driver. Thanks B&H.
I bought this converter to go with my R6 Mk II. I've used it with my Sigma 150-600 contemporary mounted on it and it all works great! I have two lenses that I really wanted to make sure I was able to use when I switched to mirrorless. The Sigma and my Canon f2.8L 70-200 IS USM (original flavor). Yeah, they're both heavy and there are newer options, but they are also pretty expensive things to swap out for a hobbyist, and I'm emotionally attached to them. This converter does the job totally. Focus, metering, everything is just great. And still fast.
The Canon EF-EOS R lens adapter is the best adapter for EF lenses to mirrorless systems. OK, maybe that's just hyperbole but, RF has been better than other systems in getting their cameras to make the most out of EF lenses. I've been adapting E-mount and Micro Four Thirds for years and it wasn't til trying them on RF that I've been happy with their performance. Even on a budget RP camera, the performance of EF lenses is on par with my EOS DSLRs, if not better. On the flip side, I also have a 3rd party adapter, and this one has the drop-in ND filters, and I got it for the same price as this one, and its performance is damn near identical, if not so. Does this mean praise should be heaped on the system rather than the adapters? I don't care. This adapter works like a ... MoreThe Canon EF-EOS R lens adapter is the best adapter for EF lenses to mirrorless systems. OK, maybe that's just hyperbole but, RF has been better than other systems in getting their cameras to make the most out of EF lenses. I've been adapting E-mount and Micro Four Thirds for years and it wasn't til trying them on RF that I've been happy with their performance. Even on a budget RP camera, the performance of EF lenses is on par with my EOS DSLRs, if not better. On the flip side, I also have a 3rd party adapter, and this one has the drop-in ND filters, and I got it for the same price as this one, and its performance is damn near identical, if not so. Does this mean praise should be heaped on the system rather than the adapters? I don't care. This adapter works like a charm and I'm so glad I got one. There are cheaper options out there, but that doesn't affect my satisfaction with this product.
There's not much to the Mount Adapter's design. It's a short metal tube, built to similar specifications as the EOS R. The exterior is metal and the adapter protects your camera and lens from dust and splashes. It doesn't have a tripod foot, which is a concern if you plan on using large, heavy lenses which don't include their own tripod mount. But none of Canon's adapters have a tripod socket.It measures 0.9 by 2.8 inches (HD), weighs 3.9 ounces, and is finished in basic black. The rear connects to an RF-mount camera, the same as an RF lens, and the front accommodates an EF or EF-S SLR lens. While EF-S lenses don't cover a full-frame sensor, they are handy for video with the EOS R, as its 4K system uses only a small area of its image sensor.The adapter works ... MoreThere's not much to the Mount Adapter's design. It's a short metal tube, built to similar specifications as the EOS R. The exterior is metal and the adapter protects your camera and lens from dust and splashes. It doesn't have a tripod foot, which is a concern if you plan on using large, heavy lenses which don't include their own tripod mount. But none of Canon's adapters have a tripod socket.It measures 0.9 by 2.8 inches (HD), weighs 3.9 ounces, and is finished in basic black. The rear connects to an RF-mount camera, the same as an RF lens, and the front accommodates an EF or EF-S SLR lens. While EF-S lenses don't cover a full-frame sensor, they are handy for video with the EOS R, as its 4K system uses only a small area of its image sensor.The adapter works without issue or any additional effort, and without limiting autofocus speed or accuracy. I can't think of a better thing to write about an adapter—transparency in operation is what you want when using non-native lenses with a mirrorless system.At just less than $100, the Mount Adapter EF-EOS R is a no-brainer purchase for photographers buying the EOS R. If you already have an investment in EF lenses, it will let you use them without any drawbacks with an RF camera body. If you don't already own the lenses, but you've decided on the EOS R, it makes it possible to supplement the rather limited selection of lenses currently available. Either way, it's an almost essential accessory for the EOS R.There are other adapters to consider. The $200 Control Ring Mount Adapter EF-EOS R is essentially the same device, but with a programmable control ring, just like you find on RF lenses. If you love the feature, you may find it worth the additional cost.
I purchased this adapter after having issues with an adapter my local camera shop sold me to connect my new camera with older glass. The other adapter worked fine for about two or three weeks but after using that adapter on the daily, the lens and the camera had trouble talking to each other. I could feel a wobble, loose connection between the lens and the camera, when I held the camera on it's back and slightly wiggled the body, the lens would rock a tiny bit, causing the lens and the camera connection to break contact slightly. After purchasing the Canon Mount adapter, the connection felt strong, no wiggle. I have not used the new adapter on the daily for more than two weeks because my new lens arrived and my need for the adapter wasn't necessary.To be fair, I ... MoreI purchased this adapter after having issues with an adapter my local camera shop sold me to connect my new camera with older glass. The other adapter worked fine for about two or three weeks but after using that adapter on the daily, the lens and the camera had trouble talking to each other. I could feel a wobble, loose connection between the lens and the camera, when I held the camera on it's back and slightly wiggled the body, the lens would rock a tiny bit, causing the lens and the camera connection to break contact slightly. After purchasing the Canon Mount adapter, the connection felt strong, no wiggle. I have not used the new adapter on the daily for more than two weeks because my new lens arrived and my need for the adapter wasn't necessary.To be fair, I had the original adapter on the camera 100% of the time, with the lens attached constantly. After all, why would I disconnect the lens adapted when I expected to use the exact same setup the next time I needed the camera for a shoot? With gear stuffed into the bag and transported to different locations daily, the treatment wasn't gentle, but not rough. I expected the adapted to be able to withstand daily use.The Cannon adapter seems much more solidly built. I wish I could report the canon adapter stood up to constant abuse, but with my new lens, RF 14-35mm, the adapter is just not as neccessary. But I do feel much more confident having the Canon mount adapter in my bag.
I own two Canon R5 cameras. I love the fact that I can use all of my EF mount lenses with them and that, by buying lens adapters containing polarizers or variable neutral density filters, I can use one set of filters to fit all of my EF lenses without regard to the size of their objective lenses.However, I resented Canon's charging $100 for its unfiltered EF-EOS R adapter, when other companies were offering similar devices for considerably less. Hence, I ordered one by Canon and one by a competitor to compare their quality and performance. At first both seemed to work flawlessly, and I congratulated myself on saving $40.00.A few months latter the off-brand one would no longer mate seamlessly with my lenses and camera. It was still working, despite significant ... MoreI own two Canon R5 cameras. I love the fact that I can use all of my EF mount lenses with them and that, by buying lens adapters containing polarizers or variable neutral density filters, I can use one set of filters to fit all of my EF lenses without regard to the size of their objective lenses.However, I resented Canon's charging $100 for its unfiltered EF-EOS R adapter, when other companies were offering similar devices for considerably less. Hence, I ordered one by Canon and one by a competitor to compare their quality and performance. At first both seemed to work flawlessly, and I congratulated myself on saving $40.00.A few months latter the off-brand one would no longer mate seamlessly with my lenses and camera. It was still working, despite significant gaps, but I was confident that, before long, I would have to replace it. In the mean time, were I to go on using it, it would likely fail at an inconvenient time.I should have known: One gets what he pays for. I wish I had bought two of these to begin with. The way it was, I had to wait for B&H to get more of the Canon adapters in stock, before I could replace the third party substitute.Don't make my mistake, $100 is a small price to pay for Canon's quality!
I have had a 3rd-party adapter ring on my R5 since I bought it in September 2021. The camera exhibited a wide range of weird behavior during this time, including heavy battery drain even when turned off, lock-ups that could only be cleared by removing the battery, etc. I had a crazy idea that maybe the adapter ring was the culprit, so I bought the Canon ring just to give it a try.Bingo. All the problems went away immediately. The Canon ring works perfectly, the images are sharp, and now the camera is working properly as well. Lesson learned: no more 3rd-party adapter rings!
| Is discontinued by manufacturer | No |
| Product dimensions | 7.11 x 7.11 x 2.29 cm; 110.56 Grams |
| Country of origin | Taiwan |
| Form factor | Mirrorless |
| Effective still resolution | 30.3 MP |
