Canon EF-EOS R Speed Booster Adapter 0.71x

$55 / day
$70 / weekend
$100 / week

Quantity: 4

The Canon 0.71x Mount Adapter enable you to mount Canon EF lenses on EOS-R mirrorless cameras. The adapter retains the wide-angle of lenses, while adding roughly a stop of light.

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The Canon Mount Adapter EF-EOS R 0.71x permits attaching EF-mount lenses to RF-mount cine and mirrorless cameras. Extending the range of compatible lenses while maintaining their original field of view.  Intended for cameras featuring a Super 35 sensor size. This adapter also incorporates an optical system to increase the effective angle of view by 0.71x. Thus reducing the effects of a full-frame to Super 35 crop factor. In addition, it increases the maximum aperture performance by one stop.

The EF-EOS R 0.71x adapter has electric contacts . Thus maintaining full communication between the camera and lens. In addition, the mount communicates metadata and Dual Pixel AF. This enables auto-focus with select Canon EF lenses. Finally, the adapter mounts seamlessly with the EOS C70 cinema camera. Thus featuring four screws and a split locking collar to ensure a secure attachment.

Canon Lens Compatibility

This adapter physically supports working with any Canon EF-mount lens. However, select lenses can maintain full Dual Pixel autofocus support and metadata transmission between the lens and camera, including:

  • 16-35mm f/2.8L III USM Canon EF-mount
  • 24-70mm f/2.8L II USM Canon EF-mount
  • 24-105mm f/4L IS II USM Canon EF-mount


Key Features of the Canon 0.71x Mount Adapter:

  • Canon EF Lens to Canon RF-Mount Body
  • Designed for EOS C70 Cinema Camera
  • Adapt Full-Frame Lens to Super 35 Body
  • Increases Angle of View by 0.71x
  • Increases Maximum Aperture by 1 Stop
  • Electric Contacts Support DPAF and Data
  • Includes Secure-Attachment Mount