Extending the range of compatible lenses while maintaining their original field of view, the Canon Mount Adapter EF-EOS R 0.71x permits attaching EF-mount lenses to RF-mount cine and mirrorless cameras. 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, reducing the effects of a full-frame to Super 35 crop factor and increasing the maximum aperture performance by one stop. Electric contacts are also incorporated into the adapter's design and maintain full communication between the camera and lens, as well as support metadata transmission and use of Dual Pixel AF with select Canon EF lenses. Also, the adapter has been specifically designed for the EOS C70 cinema camera and features four screws and a split locking collar to ensure a secure attachment.

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

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:

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

Related Questions and Answers

Q: 1. Will this adapter work with the original (Mark 1) version of the Canon EF 100-400mm zoom on the R7 body?

A: The Canon Mount Adapter EF-EOS R will work with the original Canon 100-400mm lens and the Canon R7.

Q: 2. Will this work with the C70?

A: Yes, it will work with the C70.

Q: 3. Will this adapter work on my 75-300 lense that I use to use on my Canon Rebel XTi camera?

A: Yes it is compatible with the Canon 75-300mm lens.

Q: 4. This adapter is compatible with Canon EF lens, what about USM macro lenses?

A: EF/EF-S and USM are part of the same "system" but mean completely different things. EF/EF-S pertains to the mount (which is principally the requirement for the lens to work with this adapter), while the other pertains the type of autofocus motor (and has nothing to do with mounting the lens to a camera). To answer the question though, all of the EF/EF-S macro lenses with USM work with this adapter.

Q: 5. I have a EF mount. Can this be used on that to use my efs lenses?

A: This adapter allows you to use a EF lens on a RF mount. There are no adapters for using a EF-S lens on a Full frame EF. You can use EF-S lenses on a APS-C EF mount without an adapter.

Q: 6. will this work with the eos r5 and the sigma 60-600?

A: Yes, the Canon EF-RF mount adapter will facilitate the EOS R5 and Sigma 60-600mm combination well.

Q: 7. Does this adapter fit and remove easily from different lenses?

A: No issues with the attachment of removal of lenses.

Q: 8. Does the adapter change the focus range of the lens?

A: This adapter does not change the focus range of the lens.

Q: 9. Does it works on a 6D mark II?

A: No, the Canon Mount Adapter EF-EOS R, B&H # CAMAEFRF, is not compatible for use with the Canon EOS 6D Mark II DSLR camera. The Canon EOS 6D Mark II DSLR camera is, by design, already compatible for use with EF lenses, and no lens adapter is required to connect an EF lens onto the Canon EOS 6D Mark II DSLR camera. The Canon Mount Adapter EF-EOS R is designed to connect EF-mount lenses onto the RF-mount lens mount used on Canon's mirrorless digital cameras, such as the Canon EOS R Mirrorless Digital Camera and the Canon EOS RP Mirrorless Digital Camera.

Q: 10. Will a Canon E mount lens work with this?

A: This adapter will only work with Canon EF-Mount lenses.