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Commlite Electronic Autofocus Lens Mount Adapter for Canon EF or EF-S-Mount Lens to Canon RF-Mount Camera

BH #COCMEFEOSR • MFR #CM-EF-EOS-R
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Commlite Electronic Autofocus Lens Mount Adapter for Canon EF or EF-S-Mount Lens to Canon RF-Mount Camera
Key Features
  • EF/EF-S Lens to RF Camera
  • Enables Autofocus and Auto Exposure
  • Transfers Lens Exif Metadata to Camera
  • Tripod Foot with 1/4"-20 Threads
This Lens Mount Adapter from Commlite allows a Canon EF or EF-S-mount lens to be used on a Canon RF-mount camera. Electronic communication between an attached camera and lens is supported, enabling autofocus as well as auto exposure features. If an attached lens is capable of generating Exif metadata, this adapter is designed to transfer that information so that it can be saved with image files generated by the combined Canon EF or EF-S-mount lens and Canon RF-mount camera.
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$44.99
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Commlite CM-EF-EOS-R Overview

This Lens Mount Adapter from Commlite allows a Canon EF or EF-S-mount lens to be used on a Canon RF-mount camera. Electronic communication between an attached camera and lens is supported, enabling autofocus as well as auto exposure features. If an attached lens is capable of generating Exif metadata, this adapter is designed to transfer that information so that it can be saved with image files generated by the combined Canon EF or EF-S-mount lens and Canon RF-mount camera.

Constructed from aluminum alloy, this adapter is durable while remaining lightweight. To help reduce stress on the camera mount when placed on a tripod, the adapter includes a detachable tripod foot with 1/4"-20 threads.

  • Allows a Canon EF or EF-S-mount lens to be used on a Canon RF-camera
  • Supports electronic communication to enable autofocus as well as auto exposure features
  • Can transfer Exif data from lens to camera, saving aperture, speed, and time of capture information to image or video files
  • Detachable tripod foot with 1/4"-20 threads can be used to reduce stress on a connected camera's mount
  • Lightweight and durable metal construction

Commlite CM-EF-EOS-R Specs

Item Type
1x Lens Mount Adapter
Camera Compatibility
Canon RF Mount
Lens Compatibility
Canon EF/EF-S Mount
Electronic Communication
Yes
Included Shims
Mounting
Tripod Mount: 1/4"-20 Female Thread
Materials
Aluminum
Dimensions
Diameter: 2.6" / 66.04 mm
Depth: 1.1" / 27.94 mm
Weight
6.17 oz / 175 g
Packaging Info
Package Weight
0.52 lb
Box Dimensions (LxWxH)
4.3 x 3.9 x 2.3"

Commlite CM-EF-EOS-R Reviews

It does what I need it for.

By John
Rated 5 out of 5
Date: 2026-05-10

I purchased it for a 70-300mm lens with the adapter ef to rf and I tried to minimize the stress on my Canon R7 and it worked perfectly.

Good Enough

By Miguel
Rated 4 out of 5
Date: 2022-06-24

I can use all my EFS Lens

See any errors on this page?

Works with Red Komodo and EF lenses?

Works with Red Komodo and EF lenses?
Asked by: Carlos
The Commlite Electronic Autofocus Lens Mount Adapter for Canon EF or EF-S-Mount Lens to Canon RF-Mount Camera will work when adapting Canon EF mount lenses to the KOMODO's RF mount.
Answered by: Jonathan S
Date published: 2023-03-28

Considering that Canon R has full censor and EF-S ...

Considering that Canon R has full censor and EF-S Lenses are for CROP - how this combination will affect the resulted picture?
Asked by: Alexander
Aside from the cropping the image, using an adapted EF-S lens on an EOS R series camera will also result in a loss of resolution.
Answered by: Kirk R
Date published: 2020-01-08

Any advantage of this vs. Canon's $100 Mount ...

Any advantage of this vs. Canon's $100 Mount Adapter EF-EOS R?
Asked by: Chris
They are about the same, the Canon adapter will give you more responsive autofocus.
Answered by: Rob
Date published: 2020-07-20
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