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Canon Control Ring Mount Adapter EF-EOS R

Canon Control Ring Mount Adapter EF-EOS R

Q: What does the control ring get you that the basic adapter doesn't do?

They both adapt the lens to the RF mount, both use the same method to do so. Both have the same performance. The only difference is the control ring adds an additional control in the form of a dial that can be programmed to do several different things. This can be anything from changing the aperture, the shutter speed, ISO, exposure compensation (what I use it for), white balance, AF mode, and so on. It can only be one at any time, and you would set it up in the menu in the same way you would customize any other control. I would say if you have the R5, R6, or R3 then it is mostly not needed, mostly just a luxury that cost an additional 100 bucks. This is because those cameras have additional controls on them that can take the place of the ring. If you have the R or RP, then it might be a good idea to get the ring since they lack in the controls the other cameras have. Or, if you just want it, that is fine too. Otherwise, your lenses will behave exactly the same. If you would like more info about the adapter, you should check out the review I have on my profile. Here is a link. https://www.amazon.com/gp/customer-reviews/R27553TB7FWPCN?ref=pf_ov_at_pdctrvw_srp

Q: Does it work with ef-s 24mm f/2.8 stm lens?

It actually does, yes. The adapter allows the use of all EF and EF-S lenses. However, as that is a crop lens, it will place the camera into what is called "crop mode" to mimic the smaller sensor size the lens was made for. This means that only 40% of the sensor will be used, and that certain video modes will no longer be accessible. So this is more or less just a way to help users coming from the older crop systems (like the Rebel line) to the new full frame models, where unlike the EF full frame cameras you can actually use your crop lenses on them via this adapter. Older DSLR full frame cameras had a mirror that could impact the rear of the smaller lenses, and that is why they could not be used on them. The new RF models no longer have the drawback, but the lenses still have too small of a projection to fill a full frame sensor, and thus the sensor "crops" down the images to make it so it works normally. You do lose some of your resolution, 60% roughly. So 20mp becomes 8mp, 30mp becomes 12mp, and so on. While it will work, I wouldn't suggest it as a long term solution, but at some point Canon is going to release RF crop series cameras, and this lens will be just fine on those. Maybe sometime late in 2022, or early 2023. In the meantime, as long as you don't mind the crop mode, this lens will work, but if you want something that works fine without the crop mode, gives the same general framing, look at the following... EF 40mm F2.8 STM - also a pancake lens, its basically the full frame version of the 24mm, and is also pretty affordable. RF 35mm F2.8 IS STM Macro - Probably the best "cheap" 35mm lens for the RF system. Usually 500 USD new, but sometimes reduced to 400. Surprisingly good lens, and does not need the adapter to use on an RF camera, but will not work on EF cameras.

Q: If i buy the ef eos r adapter, do i need this control ring? tia

Technically no. They are both adapters for EF lenses to the RF mount, both perform the same function and they do it the exact same. However, this adapter cost twice as much, but adds an additional adjustment dial that can be set to change an individual setting. If you have and R3, R5, or R6, it really isn't much help, since they have three control dials. If you have the R, RP, R10, or R7, then it might be worth the extra 100 USD. For more info about the control ring adapter, check out the review on my profile. Here is a link. https://www.amazon.com/gp/customer-reviews/R27553TB7FWPCN?ref=pf_ov_at_pdctrvw_srp

Product ID: 157882252

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💧Dust & water-resistant durability

🔄EF/EF-S lens compatibility

⚙️Built-in customizable control ring

Frequently Bought Together

Canon Mount Adapter EF - EOS R, Compatible with EOS RP, EOS R, EOS R6, EOS R5

Canon EOS R6 Mark II Mirrorless Camera (Body Only), Full-Frame Camera, 24.2 Megapixel CMOS Sensor, Photo and Video Capabilities, Black

Canon Battery Pack LP-E6P

Description

🔗 Unlock your EOS R’s full potential with precision and style!

RUGGED RELIABILITY - Dust- and water-resistant design means your gear keeps up, rain or shine.
PRECISION ENGINEERING - Metal mounts on both ends ensure rock-solid, durable connections for professional use.
INSTANT FUNCTION CONTROL - Built-in control ring lets you tweak settings on the fly without breaking your flow.
SEAMLESS LENS VERSATILITY - Effortlessly attach any EF or EF-S lens to your EOS R for ultimate creative freedom.
OPTICAL INTEGRITY PRESERVED - No glass elements inside—maintain your lens’s original sharpness and autofocus performance.

The Canon Control Ring Mount Adapter EF-EOS R is a compact, lightweight adapter that enables full compatibility of EF and EF-S lenses with EOS R mirrorless cameras. Featuring a customizable control ring for quick access to camera functions, it maintains original lens optical quality with no added glass elements. Built with metal mounts and dust- and water-resistant materials, it offers professional-grade durability and seamless performance in challenging environments.

Specifications

Brand	Canon
Manufacturer	Canon, ‎Canon
Model	2972C001
Model Year	2018
Product Dimensions	7.37 x 7.37 x 2.29 cm; 130.41 g
Item model number	2972C001
Mounting Hardware	Mount Adapter
Number of items	1
Minimum diaphragm opening	1 f
Min Focal Length	1 Millimeters
Batteries Included	No
Batteries Required	No
Lens type	Standard
Actual viewing angle	1 arcmin
Does it contain liquid?	No
Has audio recording capabilities	No
Has Auto Focus	No
Manufacturer	Canon
Item Weight	130 g

Have a Question? See What Others Asked

With the added thickness of this converter on a full frame, is, for instance, a 50mm lens still a 50mm lens or more like a 60mm?

What does the control ring get you that the basic adapter doesn't do?

Does it work with ef-s 24mm f/2.8 stm lens?

If i buy the ef eos r adapter, do i need this control ring? tia

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