Video Chat with a Photography Expert - Live

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
Commlite
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.
In Stock
$48.95
Save the Tax with the credit card. 
Protect your Gear
Add a protection plan from $5.99

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

Adapter
Camera MountCanon RF
Lens MountCanon EF/EF-S
Nikon Lens CompatibilityE-Type Lens (G-Type/Aperture Ring Lens Compatible)
Electronic CommunicationYes
Physical
MaterialAluminum
Tripod Mounting Thread1/4"-20 Female
Dimensionsø: 2.6 x D: 1.1" / ø: 6.5 x D: 2.9 cm
Weight6.17 oz / 175 g
Packaging Info
Package Weight0.52 lb
Box Dimensions (LxWxH)4.3 x 3.9 x 2.3"

Commlite CM-EF-EOS-R Reviews

Good Enough

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

I can use all my EFS Lens

Great adapter!

By Lyndon
Rated 5 out of 5
Date: 2021-07-02

This adapter for your EF or EF-S TO RF mount is superb! Fits nicely on your E mounts to use on your Mirrorless R cameras! No loss of quality with this Commlite adapter! There is a hack to file out the plastic to use a R mount extender on your EF mount zoom lens, say a EF 70/300 to make it a 420mm to get a little extra reach!! There are U-tube videos to follow along for this hack! Nice adapter, works as good as the Canon adapter!!

Good Option for EF to RF

By Derick
Rated 5 out of 5
Date: 2021-06-14

The Canon adapter was on backorder so I tried this Commlite EF to RF Mount. Score... Works great!

Inexpensive but good quality.

By Linda
Rated 5 out of 5
Date: 2021-02-09

Adapter is exactly what I needed to enable me to use older lens. Highly recommend.

Unusable for me

By Andy
Rated 1 out of 5
Date: 2020-10-28

I only bought these cause I needed one and Canon brand wasn't available. As I used it more and more, I noticed a light leak in my images when using in the studio. Couldn't figure out where it was coming from, I tried a canon adapter and the problem went away. I noticed this product fit much looser than the one made by canon. This product is unusable.

Stick with the original

By Gabe
Rated 2 out of 5
Date: 2020-08-23

Bought this only because the canon version was sold out everywhere. Build quality and packaging is good but as soon as I put it on, My EOS R and 24-70 f/2.8 had a hard time finding focus. This lasted about a day. The one issue that really bugged me was that when the lens was fixed to the camera and lens, the lens would jiggle, as if it wasn't a tight fit. If you grabbed the lens and the body you could feel some play between them. This ensured me that it was not a tight seal and could possibly get dust inside the body. I returned it and got the canon version when it was available.

Careful if using a monster prime

By Jim
Rated 4 out of 5
Date: 2022-04-11

I had my expensive (and huge) 500 F4 prime mounted with extender and this adapter to my EOS R. Worked great, but when lowering it to my side after a shot, I was horrified when it detached and dropped my expensive glass! Luckily it was only a short distance and landed hood side down in soft mud, so only resulted in cardiac stress but no lasting damage. There is a reason the larger glass comes with strap attachment points - the stress on the mount can be high with larger glass. The small screws had popped out. All good when I got it home and re-tightened them but something to be aware of for anyone just starting out with a big prime.

I'm so happy

By Mmabo
Rated 5 out of 5
Date: 2021-12-03

I love it wow

See any errors on this page? Let us know

YOUR RECENTLY VIEWED ITEMS

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
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
  • y_2023, m_1, d_26, h_22CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.34
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_2
  • loc_en_US, sid_1503268, prod, sort_[SortEntry(order=HAS_STAFF_ANSWERS, direction=DESCENDING)]
  • clientName_bhphotovideo