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Canon

Canon Mount Adapter EF-EOS R, Black

  • Based on 2,471 reviews
Condition: New
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Availability: In Stock.
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Arrives Monday, Mar 23
Order within 16 hours and 29 minutes
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Features

  • Standard Mount Adapter allows EF/EF-S lens compatibility with EOS RP, EOS R, EOS R6, and EOS R5 Cameras
  • 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.

Compatible Mountings: Canon RF


Aspect Ratio: 32


Photo Sensor Technology: Not Specified


Supported File Format: RAW


Image Stabilization: Digital


Maximum Focal Length: 105 Millimeters


Maximum Aperture: 20 Millimeters


Brand: Canon


Model Name: CANON MOUNT ADAPTER EF-EOS R


Maximum Webcam Image Resolution: 30.3 MP


Compatible Mountings: Canon RF


Aspect Ratio: 32


Sensor Type: Not Specified


File Format: RAW


Image stabilization: Digital


Maximum Aperture: 20 Millimeters


Photo Sensor Resolution: 30.3 MP


Photo Sensor Size: Full Frame (35mm)


Maximum Shutter Speed: 1 seconds


Minimum Shutter Speed: 1 Seconds


Exposure Control: Program (P) mode


Form Factor: Mirrorless


Effective Still Resolution: 30.3 MP


Special Feature: Lightweight


Color: Black


Screen Size: 3.15 Inches


Shooting Modes: Automatic


Item Weight: 0.24 Pounds


Video Resolution: 1080p


Viewfinder: Electronic


Flash Modes: Various flash modes supported


Camera Flash: no flash


Skill Level: Professional


Specific Uses For Product: Videography


Compatible Devices: Canon EF lenses


Continuous Shooting: 60 FPS


Aperture modes: f/22


Flash Sync Speed: 1/200


Video Capture Format: MP4


Self Timer: 10 Seconds


Connectivity Technology: USB


Wireless Technology: Wi-Fi


Total USB Ports: 1


Total Video Out Ports: 1


Display Type: LCD


Display Fixture Type: Fixed


Has Color Screen: Yes


Memory Slots Available: 1


Recording Capacity: 1 Minutes


Write Speed: Up to 8 fps or around 10-60 MB/s


JPEG Quality Level: Normal


Supported Image Format: RAW


Total Still Resolution: 30 MP


Maximum Focal Length: 105 Millimeters


Lens Type: Teleconverter


Zoom: Optical Zoom


Camera Lens: Canon EF-EOS R Mount Adapter


Minimum Focal Length: 20 Millimeters


Real Angle Of View: 12 Degrees


Focal Length Description: teleconverter


Brand: Canon


Model Name: CANON MOUNT ADAPTER EF-EOS R


Built-In Media: CANON MOUNT ADAPTER EF-EOS R, Camera Cover R-F-3, LENS DUST CAP RF, Soft Case


Are Batteries Included: No


Model Number: 2971C002


Remote Included: No


Model Series: EF-EOS R


Global Trade Identification Number: 86


UPC: 013803304886


Manufacturer: Canon


Warranty Description: 1 Year Manufacturer Limited Warranty


Item Type Name: Canon cameras us ef-eos r new mount adapter, black, full-size (2971c002).


Unit Count: 1.0 Count


Digital-Still: Yes


Movie Mode: Yes


Image Capture Type: Video


Night vision: No


Auto Focus Technology: Phase Detection


Focus Features: Phase Detection Autofocus


Focus Type: Fixed Focus


Focus Mode: Single-Servo AF (AF-S)


Autofocus: Yes


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Mar 23

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.

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Top Amazon Reviews

    • Best of the three Canon adaptor versions IMO! And cheapest!
Review Image by Destiny Marie Destiny Marie
I just upgraded to an R6ii from a 5Diii, and needed this adaptor to use my EF-L lenses with the new camera. I was nervous my lenses would have a loss in quality, but on the contrary they are actually performing better than ever. A lot of that has to do with the camera, because the R6ii is incredibly fast, but it's amazing to have an adaptor that gives no loss in quality and just flawlessly connects the EF lenses to the R system. I have had ZERO issues with connection, everything connects just like a lens connects straight to the camera. I have two L lenses, so I just keep the adaptor on the camera body and swap out the lenses to the adaptor as if they were connecting straight to the camera. The adaptor does add length, obviously, but the weight isn't that significant. If you're like me and have a heavy 70-200 lens, it works perfectly, but because of the extra length on an already long and heavy lens, I am careful when carrying because I don't want it just dangling on the adaptor/camera. The adaptor does connect tightly with no wiggle though, so it is safe if you do let the camera hang to your side with the lens, I'd just take precaution. Better to be safe than sorry. Honestly, I couldn't be happier. For the price, this is truly a great deal. $100 to make my expensive L lenses work with the new camera? Perfect! Definitely beats having to upgrade to even more expensive lenses right now. I did a lot of research on the three different Canon brand adaptors, and out of the three, this one was the best choice for me and was the cheapest as well which was a plus! If you're on the fence between the three different adaptors, I'd really recommend this one. Unless you really need an extra control ring (that's awkwardly placed), or drop in filters (that are very expensive), this is such a great price and works flawlessly! ... show more
Reviewed in the United States on July 24, 2023 by Destiny Marie Destiny Marie
    • Fits like a glove!
Works great to transfer my EF lens onto my mirrorless camera. It has contacts so my lens motors work for AF.
Reviewed in the United States on January 10, 2026 by James
    • Perfect Solution for My EF Lens on R7
I recently bought a lens for my Canon R7 without realizing it wasn’t compatible — rookie mistake. Thankfully, this Canon EF-EOS R adapter saved the day. Once I attached it, the lens worked flawlessly, with fast autofocus and full functionality. The build quality is solid, and it feels like a native part of the camera once mounted. No lag, no issues, just smooth performance. If you’re transitioning to the R series and want to keep using your EF lenses, this is a must-have. 10/10 — highly recommended! ... show more
Reviewed in the United States on July 28, 2025 by José Rodríguez
    • Works perfectly
Had an off brand adapter that worked fine between my old EF lens and my R8 just to try it. But, before my trip to France I bought an EF 70-300 IS II USM for my R8 and bought this to make absolutely sure I would not have any adapter problems ruining my photos. It works. And though it is more expensive that the off brands, the peace of mind was worth it to me. ... show more
Reviewed in the United States on September 17, 2025 by Jason
    • Perfect fit for my new camera R5
Ordered new EF-EOS adapter it was opened and missing and with wrong back cap on the back instead of RF back cap it had EF probably the one who had it put the wrong cap adapter itself was fine and looked like new, returned and asked for a replacement, it came few days later that was new as it should with the correct adapter rear cap for RF and little bag for ef adapter itslef and brand new very happy with it, test it wil all my EF lenses it worked great, fast autofocus, compatible with my sigma 35 mm and 70-200 plus all EF canon lenses, its a great option so I dont need to buy other RF lenses. The only downsize i would say is that is made in Taiwan, I wish it was made in Japan since they tend to have higher quality but still under Canon so it should be ok. Make sure once you order to have all accessories since some are returns even though they advertise as new, make sure you have EF front cap with canon sign and RF back cap so it will fit when you pack, as well should have am adapter bag wraped in plaastic with canon manual and USA warranty on it, if you find all these you are good to go. Dont buy other adapters this is kind of cheap and is good quality and value using it with your EF lenses. Highly Recommended ... show more
Reviewed in the United States on June 8, 2024 by Leftian
    • Essential for those moving from DSLR EF lenses to mirrorless cameras.
I was gifted a Canon R7 mirrorless camera and have a lot of EF lenses. This is a great adapter to allow me to use my pre-existing lenses on the new camera body. It fits perfectly, it is seamless and easy to use. Picture quality has been excellent and it is a good size that is not too bulky. For the price, it adds a great value for what I have already. Autofocus is quick and the weight is minimal. I am very pleased with its performance. ... show more
Reviewed in the United States on February 16, 2025 by Eagle Vision
    • Good quality lens adapter
Works well and does it's job. Fitting is a bit tighter than it should be but it works.
Reviewed in the United States on October 30, 2025 by Prem Acharya
    • Simple and Reliable Adapter
This adapter is one of those pieces of gear you slap on, use for a week, and stop thinking about entirely, which is honestly the best compliment. It feels sturdy, locks in with a satisfying click, and your EF lenses just… work. Autofocus behaves like it always did (sometimes even better on newer R bodies), stabilization is fine, and image quality is untouched since there’s no glass inside. The only time you really notice it is when the setup gets a little longer and front-heavy with bigger lenses, and yeah, paying this much for what’s basically a well-made spacer can sting. Occasionally an older lens might hunt a bit in dim light, but it’s rare and usually not a dealbreaker. If you already own EF lenses and are moving to EOS R, this adapter doesn’t feel like a compromise, it feels like Canon quietly letting you keep your old gear without drama. ... show more
Reviewed in the United States on January 30, 2026 by Vanessa Montalvo

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