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Black Canon EF-EOS R lens mount adapter, compact cylinder, matte finish

Canon

Canon Mount Adapter EF-EOS R 2971C002

SKU CH-DSV5-CR6G4

Attach Canon EF and EF-S lenses to EOS R cameras with full autofocus and image stabilisation

  • Product typeLenses Accessories
  • Product colorBlack
  • Compatible withCanon EOS
  • Enables use of existing EF and EF-S lenses on EOS R cameras
  • Maintains original optical quality with no glass elements in the adapter
  • Provides full autofocus and image stabilisation support for adapted lenses
  • Lightweight and compact design adds minimal bulk to the kit
  • Canon EOS R system compatibility expands your lens options instantly

Canon EF-EOS R Adapter — What It Is

The Canon Mount Adapter EF-EOS R connects existing EF and EF-S lenses to EOS R series mirrorless cameras. It contains no optical elements so the original lens performance is preserved. The adapter maintains full autofocus and image stabilisation functions. Photographers who have invested in Canon DSLR glass can continue using it on the new system.

Installation and Common Issues

Mounting the adapter is straightforward: align the red dots, twist until it clicks, then attach the EF or EF-S lens to the adapter's front mount. The unit is lightweight and compact, adding minimal bulk to the kit. The most frequent issue is forgetting to update the lens firmware for optimal communication with the EOS R body. Third-party EF-mount lenses may exhibit slower AF speeds or hunting compared to native RF lenses.

Who Should Buy — And Who Should Not

This adapter suits Canon shooters transitioning to EOS R who want to keep their current EF or EF-S lens collection. It is ideal for professionals and enthusiasts who rely on specific DSLR optics not yet replicated in the RF lineup. Buyers who want a smaller native RF lens kit should look at dedicated mirrorless options instead. Photographers needing electronic contacts for features like lens aberration correction on unsupported third-party glass may find limited functionality.

How it compares

Measured against everything we stock in Interchangeable Camera Lenses, at today’s prices. Recalculated every night.

Price $97.99
Cheaper than about 90% of the 2,570 comparable items (median $546.49).

Specifications

Product
Brand nameCanon
Model name2971C002
Product typeLenses Accessories
Product colorBlack
Compatibility
Compatible withCanon EOS

Questions about this item

How do I verify the adapter maintains full autofocus and image stabilisation with my EF lens after mounting it on the EOS R?

Attach an EF or EF-S lens, half-press the shutter and confirm focus locks without hunting; engage IS and check the viewfinder for steady framing during handheld shots.

Does the package include any EF or EF-S lenses, or must they be purchased separately?

Only the adapter is supplied; compatible EF or EF-S lenses are sold separately and must be sourced before use.

Is the 2971C002 the only version available, or are there alternative adapter models to consider?

The 2971C002 is the standard EF-EOS R adapter; other variants such as the control-ring or drop-in filter versions are separate products with different features.

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