Extending the range of compatible lenses while maintaining their original field of view, the Canon EF-EOS R Mount Adapter 0.71xpermits 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.

Open Box Products Have a Limited 1-Year Manufacturer Warranty    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 work with Canon r100

A: The Canon R100 is compatible with the EF-EOS R mount adapter.

Q: 2. will this work with the R3 ?

A: yes, the following adapter allows you to attach Canon EF/EF-S Lens to EOS R Camera body.

Q: 3. Does IBIS still work with the EF-EOS R adapter? Specifically will my Canon EF 400 5.6 have IS as a result of using it on a R7?

A: Yes, IBIS can still work when using this EF-EOS R adapter on the EOS R7 and a Canon EF 400mm f/5.6L lens.

Q: 4. For anyone who has purchased this. Do you regret not purchasing the one with the control ring?

A: The most typical usage for the version with the control ring is to use it to adjust ISO. As such, if you are not needing a ring for that then you are unlikely to regret getting the Canon Mount Adapter EF-EOS R (B&H# CAMAEFRF) instead of the Canon Control Ring Mount Adapter EF-EOS R (B&H# CAMAEFRFCR).

Q: 5. By adding adapter, will you lose an f stop in the process?

A: Short answer: f is not affected. The "original" (unadapted EF lens on a DSLR camera) focal length and opening of the lens are not changed. Long answer: The new RF lens mount has a shorter flange focal distance (distance between rear objective lens and camera sensor) of 20mm compared to the flange focal distance on the EF mount (44mm). The mount adapter is simply a metal tube or spacer that restores the 44mm flange focal distance, so that the EF lens can be used on the RF body.

Q: 6. 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: 7. Does the Tamron 28-300mm f/3.5-6.3 DI VC PZD (model A010) work with the mirrorless camera R6 mark ii using this adapter?

A: Yes, the following lens and adapter combo will work on a Canon R6.

Q: 8. 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: 9. Can I use this mount adapter with an EF teleconverter and EF lens?

A: As long as the Canon EF Extender you use is compatible for use with the Canon EF lens you own, yes, you may use your Canon EF mount lens and Canon EF extenders like the Extender EF 1.4x III on the Canon Mount Adapter EF-EOS R.

Q: 10. Will this work with the Red Raptor VV?

A: Yes, the RED DIGITAL CINEMA V-RAPTOR 8K VV + 6K S35 Dual-Format DSMC3 Camera (Canon RF, Black) supports the Canon Mount Adapter EF-EOS R. See the current lens compatibility list below: https://bit.ly/3Gtcusl