The Canon EF-EOS R Drop-In Circular Polarizer Mount Adapter enables EF-mount lenses to be used with RF-mount mirrorless cameras such as the EOS R / EOS RP. Key features include:

• Adapts EF / EF-S mount lenses to RF mount cameras.
• Drop-In CP Filter allows use with lenses without filter threads.
• Dust- and water-resistant.
• Maintains optical quality of lens while retaining autofocus / IS capabilities (if featured)