Marking a new chapter in the history of EOS, the EOS R system is built for imagemakers who demand high-performance capture, a full-frame sensor and excellent ergonomics. A 54mm diameter lens mount enables RF lenses to have large rear elements, while a mirrorless design brings them closer to the sensor for bright, sharp and compact lens designs. A 12 pin electronic connection delivers fast communication between the camera and the lens, facilitating a versatile and powerful system. Plus, with a variety of mount adapter options, it’s easy to incorporate your EOS R system into an EOS system and expand your creative opportunities.
- RF Mount
- Canon Full-frame
54mm Large Diameter and Short Back Focus
The large diameter and decreased distance between the rear lens element and sensor enable a compelling combination of image quality, performance and compact lens design. The RF mount retains the same, large 54mm diameter as the current Canon EF mount, but thanks to the EOS R and EOS RP cameras’ mirrorless structure, the rear lens element can be much closer to the image plane. This combination opens up a number of possibilities. The rear element of RF lenses can be larger in diameter, improving image quality at the corners and outer edges of the frame. Larger rear elements mean front elements can be smaller, meaning less strong refracting and bending of light rays within the lens, enhancing optical performance. Most importantly, the EOS R system opens the door to the future. It unlocks more freedom and flexibility in lens designs, allowing faster lenses with increased optical performance in more compact forms than before.
© Lindsay Adler,
Canon Europe Ambassador
20mm Flange Focal Distance
The RF mount is mounted just 20mm from the image sensor. This provides flexibility for future lens designs and the durability needed for professional, real-world operation, even when using super telephoto lenses.
Data Transmission through 12 pin Electrodes
A 12 pin connection between the camera and lens means communication at a higher speed with larger amounts of data transfer, enabling incredibly fast AF, high IS and image optimization. It’s a system designed to expedite operations that’s ready for future expansions.
Compatibility with EF/EF-S Lenses
with EF/EF-S Lenses
Take full advantage of the EOS system by using any EF/EF-S lens with the EOS R and EOS RP cameras by way of three optional mount adapters, including one featuring a customizable control ring and another allowing you to drop in a circular polarizing or variable ND filter.
Mount Adapter EF-EOS R
EF 100–400mm f/4.5-5.6L IS II USM
Mount Adapter EF-EOS R
EF 11–24mm f/4L USM
Mount Adapter EF-EOS R
Lightweight and compact, the Mount Adapter EF-EOS R connects EF and EF-S lenses to the EOS R and EOS RP cameras, exponentially expanding the list of compatible lenses.
Control Ring Mount Adapter EF-EOS R
The Control Ring Mount Adapter EF-EOS R adds a control ring like those found on RF lenses, providing the same level of control to your EF and EF-S lenses and supporting the same setting configuration regardless of the lens.
Drop-in Filter Mount Adapter EF-EOS R
The Drop-in Filter Mount Adapter EF-EOS R enables compatibility with EF and EF-S lenses and includes drop-in filter capability for use with circular polarizing filters or variable ND filters (from ND3 to ND500 - equivalent to 1.5 to 9 f-stops).** This enhancement enables compatibility with numerous lenses regardless of their front diameter, and makes filter use possible with lenses like the ultra wide EF 11–24mm f/4L USM lens or the tilt-shift TS-E 17mm f/4L lens which cannot accept a filter on the front.
© Jimmy Chin, Canon Explorer of Light
EOS FULL-FRAME POWER
Not only can Canon’s full-frame sensors capture a tremendous amount of information at a full 24 x 36mm, but they can also capture large individual pixels for great quality of detail and low noise.
High Range of Sensitivities
Full-frame sensors excel in low light, as their physical size helps ensure high light sensitivity. This means superb, clean and detailed images at high ISOs, plus impressive handheld performance in a variety of situations.
Shallow Depth of Field
Full-frame sensors offer shallow depth of field by design, making it easy to define depth of focus through aperture choice. These sensors deliver gorgeous and soft out-of-focus areas when shooting with large apertures.
Effective Focal Length
Thanks to full-frame sensors, cameras like the EOS R and EOS RP can take advantage of RF, EF* and EF-S* lenses at their original focal length for impressive wide-angle performance and rendition across the image plane.
* Optional Mount Adapter EF-EOS R is required when using EF/EF-S lenses with an EOS R series camera.
** When the solid white line on the adjustment dial is no longer visible (ND250 or above), a blue tinge or density irregularity may occur.