Canon Control Ring Mount Adapter EF-EOS R

The Canon Control Ring Mount Adapter EF-EOS R allows Canon EF and EF-S lenses to be used on Canon EOS R-series full-frame mirrorless cameras, preserving full compatibility with autofocus, image stabilization, and electronic aperture control. What sets this adapter apart from the standard version is its built-in customizable control ring, which can be assigned to adjust aperture, ISO, or exposure compensation directly from the adapter itself, adding a useful manual control point for lenses that lack their own dedicated control ring. The adapter maintains the same flange focal distance as Canon’s standard EF-EOS R adapter, ensuring no change to a lens’s native optical performance or focusing range. Its metal construction and Canon RF and EF mount contacts provide a secure, reliable connection between body and lens. This adapter is a practical option for photographers transitioning to the EOS R system who want to continue using their existing EF or EF-S lens collection.

– Compatibility: Canon EF and EF-S lenses to Canon RF-mount (EOS R series) bodies
– Control ring: customizable, assignable to aperture, ISO, or exposure compensation
– Electronic contacts: full communication for autofocus, image stabilization, and aperture control
– Construction: metal mount with weather-sealed gasket
– Optical elements: none (adapter only, no glass in light path)
– Flange focal distance: matches Canon’s standard EF-EOS R adapter
– Tripod mount: not included on this version (control ring version)