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Viltrox EF-R3 0.71 Speed Booster Adapter for Canon EF-Mount Lens to Canon RF-Mount Camera

SKU: EF-R3 Brand:

16,499 incl. GST

2,517 GST Input (18%) Claimable with B2B Billing.
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  • Canon EF Lens to Canon RF Camera Body
  • Maintains Autofocus, Image Stabilization
  • 0.71x Optical Multiplier
  • Supports Exif Data Transfer
  • Removable Tripod Foot with 1/4″-20 Mount
  • Micro-USB Port for Firmware Upgrades

In the Box: Viltrox EF-R3 0.71 Speed Booster Adapter for Canon EF-Mount Lens to Canon RF-Mount Camera, Front Cap, Rear Cap, Hex Wrench

Ready to Ship

This EF-R3 0.71 Speed Booster Adapter from Viltrox allows a Canon EF-mount lens to be used on a Canon RF-mount camera body and select cine bodies. A 0.71x optical multiplier is built into the unit, and electronic communication between the camera and lens is supported, enabling autofocus, image stabilization, and Exif data transfer. With some lenses, maximum focusing range maybe affected as the distance from the lens to the camera’s sensor is slightly changed, and there is a 1-stop increase for the camera over the lens’s aperture range. Additionally, the functions of some lenses are not fully available depending on the camera body. A micro-USB Port is provided for firmware upgrades, and the adapter features a removable foot with a 1/4″-20 tripod socket for easy mounting.

  • Compatible RF-Mount Cine Cameras
  • EOS C70
  • Red Komodo 6K
Packaging Weight 0.4 kg
Packaging Dimensions 12 × 10 × 7 cm

7.4 oz / 209 g


ø: 28.3 x H: 32.3 x W: 11.0" / ø: 72.0 x H: 82.0 x W: 28.0 cm

Camera Mount Type

Canon RF



Lens Mount

Canon EF

Optical Design

4 Elements in 4 Groups

Tripod Mounting Thread

1/4"-20 Female

Electronic Communication





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GTIN: 778469116623