The Jupiter EF-RF Adapter from Sirui allows Canon EF-mount lenses to be attached to Canon RF-mount digital cameras. It is precision constructed from aluminum alloy to be lightweight and durable and allows a desired lens to be adapted with no loss in image quality. It features a built-in female 1/4"-20 tripod mount socket designed to keep the camera and lens setup in balance.

NOTE: This is a manual lens adapter and does not provide any electronic communication between the lens and camera body.

Canon EF Lenses to Canon RF Cameras    Compatible with Jupiter Series Lenses    Precision Aluminum Construction    Integrated 1/4"-20 Tripod Socket

Related Questions and Answers

Q: 1. When I use this adapter, I don't see aperture data on the viewfinder and am unable to take any photos. I've worked with it with three EF mount lenses on my R6, and the camera refuses to take any photos. Is it defective, or am I doing something wrong?

A: You need to enable “release shutter without lens” settings. This adapter does not transmit electronic data so it is normal not to see the information in the finder. You can change the aputure in camera or if using a camera with an aperture ring you can change using it on the lens.

Q: 2. can this adapter works for ef-m to RF?

A: No, EF/EFS-RF, does not work with EF-M.

Q: 3. this works for the blackmagic 6k g2 (Ef mount)?? or what model will allow me to use an RF mount lens on this Ef mount body?

A: The Sirui Jupiter EF-RF Adapter for Canon EF Lenses to Canon RF Cameras is not compatible with the Blackmagic 6k g2 (Ef mount). Currently there are no adapters that would allow an RF lens to be used on an EF camera.

Q: 4. 2. And if it works on photo mode, any problem with that such as autofocus etc?

A: The Meike 0.71x Locking Speedbooster Adapter for EF Lens to Canon RF Mount Cameras supports autofocus and all camera-to-lens communication in photo mode.

Q: 5. Is this canon ef or canon rf it says ef/rf but the mounts aren't the same?

A: The Nine Volt AirCap (Canon EF/RF) will fit both Canon EF and Canon RF camera bodies.

Q: 6. Does b&h tasted this adapter?? Any thoughts?

A: B&H has not posted a review of the Vello Auto Lens Adapter for Canon EF/EF-S Lens to Canon RF-Mount Camera on our website. However, I have used and do own Vello products, and do recommend them. Do note that you have 30 days from the date of purchase of the lens adapter to ensure it will work for your usage needs. If you test it and it does not work for your personal needs, you may return the lens adapter for an exchange or a refund.

Q: 7. can i use sigma ef 18-35 and sigma ef 50-100 with this adapter on S35 Red Komodo and FF Canon C70, Canon R6?

A: No, adapter can only be used on Canon RF-Mount camera bodies.

Q: 8. Does it support autofocus?

A: The Vello Canon EF Lens to Canon EOS RF Camera Lens Adapter does not have electronic connections and will not support auto focus.

Q: 9. Does this cover full frame?

A: Yes, the Sirui Jupiter PL-E Adapter for PL Mount Lenses will support full frame lenses.

Q: 10. Does it work on photo mode well?

A: Yes, the Meike 0.71x Locking Speedbooster Adapter for EF Lens to Canon RF Mount Cameras can be used to adapt lenses for taking photos.