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Canon

Canon Mount Adapter EF-EOS R, Black | Allows -S Lens Compatibility with the R CameraExterior

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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Aug 13
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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: 10.5 centimeters


Maximum Aperture: 20 millimeters


Expanded ISO Minimum: 100


Metering Description: Evaluative


Brand: Canon


Compatible Mountings: Canon RF


Aspect Ratio: 32


Sensor Type: Not Specified


File Format: RAW


Image stabilization: Digital


Maximum Aperture: 20 millimeters


Expanded ISO Minimum: 100


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


Effective Still Resolution: 30.3 mp


Special Feature: Lightweight


Color: Black


Screen Size: 3.15 inches


Shooting Modes: Automatic


Item Weight: 3.84 ounces


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 frames_per_second


Aperture modes: f/22


Viewfinder Magnification: 0.76x


Flash Sync Speed: 1/200


Video Capture Format: MP4


Connectivity Technology: USB


Wireless Technology: Wi-Fi


Video Output: USB


Total USB 3.0 Ports: 1


Total USB Ports: 1


Total Video Out Ports: 1


Display Type: LCD


Dots Per Screen: 175


Display Fixture Type: Fixed


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


Bit Depth: 14 Bit


Total Still Resolution: 30 mp


Maximum Focal Length: 10.5 centimeters


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


Number of Diaphragm Blades: 9


Metering Methods: Evaluative


White Balance Settings: Auto


Self Timer: 10 seconds


Crop Mode: 32


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


Model Number: 2971C002


Model Series: EF-EOS R


Global Trade Identification Number: 86


Generation: 1


Number of Items: 1


UPC: 013803304886


Unit Count: 1 Count


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


Manufacturer: Canon


Manufacturer Part Number: 2971C002


Warranty Description: 1 Year Manufacturer Limited Warranty


Digital Scene Transition: false


Image Capture Type: Video


Auto Focus Technology: Fixed Focus


Focus Features: Phase Detection Autofocus


Autofocus Points: 80


Focus Type: Fixed Focus


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


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Aug 13

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.

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Top Amazon Reviews

    • Reliable Adapter with Excellent Fit and Compatibility
I purchased this lens adapter and I am satisfied with its overall performance and build quality. It fits securely between the camera and lens, creating a stable connection without looseness or installation issues. The construction feels solid and durable, and I like that it maintains a clean design that matches the camera setup well. It allows existing lenses to be used conveniently while preserving functionality, making it a practical addition for photography equipment. Overall, it is a dependable and well-built adapter that provides good compatibility and value for photographers looking to expand lens options. ... show more
Reviewed in the United States on July 2, 2026 by Jorge enriquez
    • Works perfect
Works flawlessly with my canon EOS R and my EOS R7 for my ef L lenses. Autofocus is fast and sharpness is still amazing.
Reviewed in the United States on July 29, 2026 by James F
    • Best of the three Canon adaptor versions IMO! And cheapest!
Review Image by 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
    • Works well for EF lens owners
Actually ordered the programmable ring version first but realized it's completely unnecessary. And when grabbing the lens you might accidentally turn the ring. The non programmable on works fine. Solid, adds some length to your lens but optically it's excellent since there's no glass
Reviewed in the United States on June 22, 2026 by M. Chen
    • Works great for my dental photography setup
Review Image by Coffee Connoisseur
Recently made the switch from DSLR to mirrorless (Canon R7) for dental photography. From what I saw, my existing 100mm macro EF lens was just about as good as the RF version, so I opted for this adapter and had no issues using my existing EF lens. Everything works great and was super easy to install. It did make the overall lens longer of course, but the RF 100mm macro lens would have been longer anyway, so all in all it didn't really make too much of a difference. ... show more
Reviewed in the United States on April 12, 2026 by Coffee Connoisseur
    • 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
    • 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
    • Fit and quality good
👍👍👍👍👍👍 100%
Reviewed in the United States on July 18, 2026 by Natoechie 23

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