NEEWER EOS EF to RF Lens Adapter

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Ends May 31, 2024 at 2:00 pm
The product discount will be automatically applied once you add it to the cart.
SKU: 66600897


All Neewer products carry a 2-Year Warranty and 45-day Return. Learn more at Warranty Policy.

Shipping Policy

Shipping from local warehouse based on your area, normally it takes 2~10 days for the delivery, Learn more at Shipping Policy.

Firmware & Manual

To download the product firmware or manual, please visit our Download Center.


Due to the impact of tariffs and logistics costs, prices vary by location.

WARNING:This product can expose you to chemicals including [Lead and Phthalates], which
is [are] known to the State of California to cause cancer. For more information go to


  • Expand compatibility- NEEWER NW-EF-EOSR ARC mount adapter enables you to use a full line of EF/EF-S lenses on your EOS R camera, including EOS R, EOS Ra, EOS RP, EOS R5, EOS R6, and EOS R3. Note: Our lens adapter does not support the AF-C in video mode. 2. A lens support bracket is needed when using a lens weighing more than 4.4lb/2kg
  • Customizable Built-in Control Ring- Use the built-in control ring to adjust shutter speed, aperture, ISO, and exposure compensation to your preference. The ergonomic knurls ensure smooth rotation for better control
  • Complete Functionality- Equipped with electrical contacts, the mount adapter retains autofocus and image stabilization capacities in your lens and transfers complete EXIF data from your camera
  • USB Firmware Updates- Firmware updates help you fix bugs for optimized performance. Download the update file to your PC from NEEWER’s official website, and connect the mount adapter to your PC with a micro USB cable (not included) for updating


  • Compatible Lenses: EF/EF-S lenses
  • Compatible Cameras: EOS R cameras (EOS R, EOS Ra, EOS RP, EOS R5, EOS R6, EOS R3)
  • Front Mount: EF mount
  • Rear Mount: RF mount
  • USB Connection: Micro USB
  • Front Mount Diameter: 2.56” / 65mm
  • Rear Mount Diameter: 2.64” / 67mm
  • Length: 1.26” / 32mm
  • Weight: 3.7oz / 105g

Package Contents

  • 1 x NEEWER NW-EF-EOSR ARC Mount Adapter
  • 1 x User Manual
  • 1 x Front Cap
  • 1 x Rear Cap