Video Chat with a Photography Expert - Live

Commlite Electronic Autofocus Lens Mount Adapter for Canon EF-Mount Lens to EF-M-Mount Camera

BH #COCMEFEOSM • MFR #CM-EF-EOSM
Print
Commlite Electronic Autofocus Lens Mount Adapter for Canon EF-Mount Lens to EF-M-Mount Camera
Key Features
  • EF Lens to EF-M 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-mount lens to be used on a Canon EF-M-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-mount lens and Canon EF-M-mount camera.
More Details
Temporarily Out of Stock
No Store Display
$38.00
Ask an Expert
800-606-6969

Commlite CM-EF-EOSM Overview

This Lens Mount Adapter from Commlite allows a Canon EF-mount lens to be used on a Canon EF-M-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-mount lens and Canon EF-M-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-mount lens to be used on a Canon EF-M-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-EOSM Specs

Item Type
1x Lens Mount Adapter
Camera Compatibility
Canon EF-M Mount
Lens Compatibility
Canon EF Mount
Electronic Communication
Yes
Included Shims
Mounting
Tripod Mount: 1/4"-20 Female Thread
Materials
Aluminum
Packaging Info
Package Weight
0.61 lb
Box Dimensions (LxWxH)
4.4 x 3.8 x 2.4"

Commlite CM-EF-EOSM Reviews

COMMlite Electronic Auto focus Lense Mount Adapter for Canon

By Parish
Rated 5 out of 5
Date: 2025-04-01

Commlite Electronic Autofocus Lens Mount Adapter for Canon EF-Mount Lens to EF-M-Mount Camera really help me with the Canon M50 Camera am using it simply help with all type of lenses that i have especially the Zoom lenses i couldn't use with it before.

Worth the money

By Carleton
Rated 4 out of 5
Date: 2022-06-14

Bought this to adapt an EF 28-135 USM lens to my Canon M50 mark ii. The lens worked well. The aperture and auto focus worked. They registered in the camera and everything. The auto focus was much slower than my EF-M native lenses. Not sure if that's due to the adapter or the EF lens. But it wasn't so slow that I found it unusable I won't be using the auto focus to capture rapidly moving subjects so its ok. The adapters build quality it awesome. Full metal. Great lock up and lens retention. The tripod base is removable which is great otherwise it wouldn't fit with my Small Rig M50 Cage on the camera body. Overall very pleased with this purchase and while I really wanted a speed booster, I feel that the adapter was very worth the money; And I won't miss the extra stop of light.

See any errors on this page?

Does it work with ef-s lenses?

Does it work with ef-s lenses?
Asked by: S
Yes
Answered by: Shalom
Date published: 2020-08-05

Can i apply Canon 600D lens on Canon eos M100 ...

Can i apply Canon 600D lens on Canon eos M100 camera with this adapter? Do i need any accesories else?
Asked by: Valid
The Commlite Electronic Autofocus Lens Mount Adapter for Canon EF-Mount Lens to EF-M-Mount Camera is designed to work with all Canon EF lenses. Actual performance will vary based on the specific lens. Commlite does not have a list of tested lenses, so it is not possible to say which lenses would definitely work. To adapt the lens one would only need the adapter, no other accessories are necessary.
Answered by: Yaakov
Date published: 2021-07-28

Does this product fit a Canon EOS RP camera for a ...

Does this product fit a Canon EOS RP camera for a 16-35mm f2.8 ultrasonic lens?
Asked by: Garrett
If you're looking to adapt an EF lens to an RF Camera like the Canon EOS RP, you would need something like the Canon Mount Adapter EF-EOS R (https://bhpho.to/2wL8wZY)
Answered by: Kevin
Date published: 2020-07-23
  • y_2026, m_6, d_4, h_10CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.46
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_3
  • loc_en_US, sid_1504272, prod, sort_[SortEntry(order=HAS_STAFF_ANSWERS, direction=DESCENDING)]
  • clientName_bhphotovideo
Whatever You Need, We've Got It