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Black Canon EF-EOS R 0.71x mount adapter with metal lens mount and electronic contacts

Canon

Canon Mount Adapter EF-EOS R 0.71x camera accessory

SKU CH-VAFM-0G4NK

Converts Canon EF lenses to RF-mount bodies, expanding angle of view by 0.71x for Super 35 sensors

  • Product colorBlack
  • Wider field of view with 0.71x optical factor
  • Brighter exposure by one aperture stop
  • Full-frame EF lenses fit RF-mount bodies
  • Super 35 coverage on EOS C70 camera
  • Optical corrections retained for sharp results

Adapter for EF lenses on EOS C70

The Canon Mount Adapter EF-EOS R 0.71x connects Canon EF lenses to the RF mount on the EOS C70 cinema camera. It adapts full-frame lenses to the Super 35 sensor format, giving a wider field of view and a brighter aperture.

For C70 owners using EF glass

Videographers and photographers who own EF lenses and want to use them on the C70 with a wider angle and faster aperture will benefit. Users without EF lenses, or who need native RF mount performance, should look at other options.

0.71x focal reduction factor

The adapter reduces the focal length by a factor of 0.71x, effectively increasing the angle of view by 35 percent and gaining one aperture stop. This single specification determines whether the adapter matches the creative and technical needs of the shoot.

How it compares

Measured against everything we stock in Camera Extras & Accessory Packs, at today’s prices. Recalculated every night.

Price $586.99
Pricier than about 90% of the 2,266 comparable items (median $39.99).

Specifications

Product
Brand nameCanon
Model nameNot Available
Product typeOther
Product colorBlack

Questions about this item

Which Canon RF-mount camera body is required to use this EF-to-RF 0.71x adapter?

It is designed for the EOS C70 Super 35mm cinema camera, adapting full-frame EF lenses to that specific RF-mount body.

Will my existing full-frame EF lenses cover the Super 35 sensor when mounted through this 0.71x adapter?

Yes, the 0.71x optical element compresses the full-frame image circle to match the Super 35 format, increasing the angle of view compared to a standard adapter.

How can I confirm the adapter is communicating aperture data correctly after attaching an EF lens to the C70?

Check that the camera displays the lens aperture value and that the iris responds smoothly when you adjust the iris ring or camera control.

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