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Protect your purchase for longer.
Your camera ships with 6 months of coverage included. Extend it if you want professional photographer peace of mind.
Units sold for parts do not qualify for extended warranty.
View warranty terms and conditionsThe Canon Control Ring Mount Adapter EF-EOS R lets you mount any EF or EF-S mount lens on your EOS R series mirrorless camera. Its customizable control ring offers intuitive and direct handling, similar to native RF lenses, for quickly and conveniently adjusting parameters such as aperture, shutter speed, or exposure compensation.
This second-hand adapter has been inspected and comes with the Camera Market warranty, ensuring reliable operation. It is the perfect solution to take advantage of your EF/EF-S lens collection on Canon's mirrorless system, maintaining image quality and autofocus performance. For all technical details and exact compatibility, we recommend checking the manufacturer's specifications.
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The Canon Control Ring Mount Adapter EF-EOS R is a mount adapter designed to attach any EF or EF-S mount lens to Canon's EOS R system mirrorless cameras. This accessory maintains full electronic communication between the camera body and the lens, enabling autofocus, aperture control, and EXIF data transmission without any loss of optical quality.
Key Features
- Mount adapter for EF and EF-S lenses to EOS R (RF) camera bodies.
- Includes a customizable control ring for adjusting aperture, shutter speed, exposure compensation, or ISO.
- Maintains full electronic communication: autofocus, stabilization, and EXIF data.
- Robust metal construction with bayonet mounts on both sides.
- Compatible with all EF and EF-S lenses, including L-series and third-party lenses with Canon mount.
Ideal for
Photographers transitioning to the EOS R system who want to continue using their EF or EF-S lenses with full electronic functionality. It is also useful for those seeking more tactile exposure control via the control ring, without needing to change lenses.
Condition
Second-hand product inspected by Camera Market. Includes standard 6-month warranty and 24-48h shipping from Barcelona.
Which lenses are compatible with this adapter?
This adapter is designed to mount Canon EF and EF-S mount lenses on EOS R series mirrorless cameras. It is compatible with most EF and EF-S lenses, both autofocus and manual.
Does the adapter affect image quality or autofocus?
The adapter maintains electronic communication between the camera and lens, so autofocus and stabilization (if the lens has it) work normally. It introduces no optical elements, so it does not degrade image quality.
What is the control ring and what is it for?
The control ring is a rotating ring on the adapter that you can customize to quickly adjust parameters such as aperture, shutter speed, exposure compensation, or ISO, according to your preferences. It works similarly to the control ring on native RF lenses.
Does this adapter work with EF-S lenses?
Yes, the adapter is compatible with EF-S lenses. When mounting an EF-S lens on an EOS R camera, the adapter maintains the focal length and angle of view, although the camera may automatically crop the image to fit the smaller image circle of the EF-S lens.
Full condition scale
Each unit is inspected at 28 points and graded honestly. Here's how we translate each level so you know what to expect:
Barely any signs of use. Almost flawless aesthetics and perfect operation.
Light marks from normal use. Optically clean and fully functional.
Visible signs of use (scuffs, marks, brassing). Works perfectly.
Not guaranteed for use: sold for parts or repair.
Why buy used?
Depreciation is already absorbed: the same gear for much less than new.
Many classics and discontinued gems only exist today on the used market.
28-point inspection and 6-month warranty included on every unit.
Extending the life of a camera avoids manufacturing and transporting a new one.
