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Canon Mount Adapter EF-EOS R

BH #CAMAEFRF • MFR #2971C002
983 reviews
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Canon Mount Adapter EF-EOS R
Key Features
  • Canon EF/EF-S Lens to EOS R Camera
  • Maintains AF and Image Stabilization
  • Dust- and Water-Resistant
Extending the range of compatible lenses, the Canon Mount Adapter EF-EOS R is a lightweight, compact lens adapter designed for attaching any EF or EF-S-mount lens to the EOS R mirrorless digital camera. This simple adapter retains full autofocus and image stabilization capabilities and contains no optical components, thereby maintaining the original optical quality of the mounted lens. It is also dust- and water-resistant, making it suitable for use in harsh weather conditions.
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Canon 2971C002 Overview

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From Manufacturer

Extending the range of compatible lenses, the Canon Mount Adapter EF-EOS R is a lightweight, compact lens adapter designed for attaching any EF or EF-S-mount lens to the EOS R mirrorless digital camera. This simple adapter retains full autofocus and image stabilization capabilities and contains no optical components, thereby maintaining the original optical quality of the mounted lens. It is also dust- and water-resistant, making it suitable for use in harsh weather conditions.

UPC: 013803304886

Canon 2971C002 Specs

Item Type
1x Lens Mount Adapter
Camera Compatibility
Canon RF Mount
Lens Compatibility
Canon EF/EF-S Mount
Electronic Communication
Yes
Included Shims
Materials
Metal
Dimensions
Diameter: 2.8" / 71.12 mm
Depth: 0.9" / 22.86 mm
Weight
3.88 oz / 110 g
Packaging Info
Package Weight
0.6 lb
Box Dimensions (LxWxH)
5.4 x 4.7 x 3.3"

Canon 2971C002 Reviews

Great for EF lens

By Ching
Rated 5 out of 5
Date: 2026-05-19

This great to use some of my older EF lens. It does add about 1.5 length oto my lens, but it is worth to be able to use my EF "L" lens with full function.

Works great. I haven't noticed any degradation in the photos

By Donal
Rated 5 out of 5
Date: 2026-04-29

Using this with my RM6.

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