The Control Ring Mount Adapter EF-EOS R lets you expand your lens compatibility when using the EOS R camera, but with an added control ring for additional customization.

Mount Specification: Canon EF mount (camera side); Canon RF mount (lens side)

Usable Lens: Canon EF lenses; Excludes RF lenses, EF-M lenses, CN-E lenses (EF cinema lenses)

Usable Camera: Canon EOS R camera

Dust- & Water-resistance: Provided (rubber ring)

Dimensions: Φ2.93 x 0.94 in. / Φ74.4 x 24mm (adapter only)