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Customer Reviews

Canon Control Ring Mount Adapter EF-EOS R

Canon Control Ring Mount Adapter EF-EOS R Adapts Canon EF/EF-S DSLR lenses to EOS R mirrorless cameras

MFR # 2972C002

5.0 out of 5 stars
6 reviews
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Canon Control Ring Mount Adapter EF-EOS R

Daniel from Canton, MO on 7/3/2023

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Works great and great price from Crutchfield openbox.

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0 of 0 found this helpful

Perfect accessory for my RF camera bodies

Stephen from Boxborough, MA on 6/7/2023

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I elected to continue using my Canon 300mm f 2.8 EF lens with my Canon R5 camera bodies. (The newly-announced RF 100-300 f 2.8 lens is a bit heavier and longer and costs $9.5K!) So, I needed an adapter mount to use the Ef lens with the RF body. I make use of the control rings on my set of RF lenses, so this adapter was the perfect combination, and the price was great!

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0 of 0 found this helpful

Canon Control Ring Mount Adapter EF-EOS R

Jennifer from Jacksonville, FL on 6/21/2022

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Upgraded from a Canon 6D to an R6. This control ring has allowed me to continue fully utilizing my existing EF lenses. Worth it to spend this amount vs. buying all new RF lenses ($$$).

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Crutchfield response on

1 of 1 found this helpful

Good quality.

Crutchfield customer from La Mirada, CA on 12/4/2021

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Works like it is supposed to, seamlessly.

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1 of 1 found this helpful

Canon Control Ring Mount Adapter EF-EOS R

Crutchfield customer from Beaverton, MI on 11/8/2021

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Verified employee review (What's this?)

The mount and electronics is the main function and that all is just as it should be perfect. I chose this adapter for the control ring. It allows one to set a camera function to a simple location for quick changes. EF glass works perfect.

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Crutchfield response on

1 of 1 found this helpful

Must-have accessory

Crutchfield customer from Kirtland, OH on 8/27/2020

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Verified employee review (What's this?)

This is a must-have accessory if you own EF/EL lenses. It's worked with every lens I've tried (Canon and non-Canon). You can't even tell that your using an adapter (other than having the convenience of the control ring).

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Crutchfield response on

1 of 1 found this helpful

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