NEEWER EOS EF to RF Lens Adapter

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SKU: 66600897
3 in stock


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

Why choose NEEWER?

👍Committed to Quality.

Quality is not just a slogan for us; NEEWER genuinely adheres to this principle. As a company that integrates research, design, production, and sales, all of our products undergo rigorous testing. Unlike other brands that offer a one-year warranty, we provide a two-year warranty. This confidence in our products stems from our unwavering commitment to quality.

🏆Amazon Best Seller

NEEWER products have become Best Sellers across multiple categories on Amazon, consistently achieving ratings of 4.8 and above. With a history spanning 13 years, our brand has been chosen by over 41.6 million users worldwide, boasting a repurchase rate of over 32%. Choosing NEEWER is a decision you won't regret!

🚛Local Warehouse Shipping

Logistical efficiency is crucial for enhancing customer purchasing experience. To reduce delivery times, we have established warehouses in various countries around the world. When you place an order, it will be shipped directly from a local warehouse. Typically, the entire process from order placement to delivery is completed within 3 to 7 business days.

⭐️5 Star Service

We offer multiple contact methods including online chat, email, phone, and multiple social media platforms ensuring a 100% response rate with a maximum response time of two business days. If you need any assistance, please feel free to contact us. We are committed to providing you with a satisfactory solution.