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Key Features
- 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
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.
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Where would you screw that side support into?! ...
Where would you screw that side support into?! I’m looking for the Komodo 6K
Certain companies like Bright Tangerine have designed their cages with screw holes to support various lens adapters, this one included. It allows you to attach to Komodo without that play in the lens mount.
Date published: 2021-10-03
When it says that it makes the lens a stop ...
When it says that it makes the lens a stop faster, like f/4 to f/2.8... does that mean it makes it how f/2.8 looks on full frame or how f/2.8 looks on Super 35?
To give the same DOF as on a FF camera, you need to be one stop faster with the focal reducer. So f2.8 on FF will have the same DOF as f2 on a super 35 with this focal reducer. Why? Physics. Because the physical iris on the lens doesnât change of course. You are gaining one stop of light not because the iris of the lens is larger but because you gather more light via the focal reducer.
Date published: 2023-12-11
What are the three Canon EF lenses that receive ...
What are the three Canon EF lenses that receive full function support with dual-pixel autofocus?
They are the:
EF 16-35mm f/2.8L III USM
EF 24-70mm f/2.8L II USM
EF 24-105mm f/4L IS II USM
Date published: 2021-05-09
how does it work for a Sigma Art 20mm 1.4 on EOS ...
how does it work for a Sigma Art 20mm 1.4 on EOS R6 ? I have a Metabones speedbooster EF-R and have severall issues : The AF does not work. It automatically crops, cannot override it. Can only use at f/1.4, cannot close, cannot boost. weird. So I am currious to see if the Canon speedbooster performs well also on 3rd party lenses, especially the ones with AF ?
You will be able to adapter and use the Sigma 20mm f/1.4 DG HSM Art Lens for Canon EF, BH #SI2014C, with this adapter as it is a Full Frame EF Mount lens. However only Canon EF Auto Focus lenses work perfectly with the Dual Pixel CMOS AF while using an adapter. When using a 3rd party lens your performance will vary from lens to lens.
Date published: 2021-03-03
Would this be ideal to work with Zeiss CP.2 full ...
Would this be ideal to work with Zeiss CP.2 full frame lenses that have the EF mount back?
Yes, this will be compatible with Full Frame EF mount lenses.
Date published: 2021-03-11
Is there electrical communication with this ...
Is there electrical communication with this adapter to change the aperture of an Otus EF lens with the camera's controls?
Yes, electronic communication is passed through native Canon EF lenses to Canon cameras with an RF-mount.
Date published: 2021-04-05
V-Raptor S35
V-Raptor S35
The Canon Mount Adapter EF-EOS R 0.71x will work with the RED V-Raptor S35 camera. However, RED Camera has published the following about the adapters used with the V-Raptor cameras:
RED SAYS:
Certain RF lenses or adapters have larger protruding rear elements than others, below is a list of lenses that while compatible do cause slight abrasions to the sensor cover mask on V-RAPTOR 8K VV's with Optional Flare Guard Installed and V-RAPTOR 8K S35. This does not have any impact to the function of the mask other than cosmetically.
• CANON MOUNT ADAPTER EF-EOS R 0.71X
Date published: 2024-12-23
It is true you lost 20% of the area dual pixel ...
It is true you lost 20% of the area dual pixel autofocus (80% to 60%) whit this adaptor?
Yes that is correct, your AF area will decrease to 60% of the sensor, which is not a problem is almost all filming situations.
Date published: 2022-01-26