Adjustable M42 42mm Screw Mount Lens to Cannon EOS RF Mount Adapter, M42 RF Adapter, M42 Lens to EOS RF, Compatible with Canon EOS R Mirrorless Camera EOS R RP Ra R3 R5 R6 R7 R10

Fotasy Adjustable M42 42mm Screw Mount Lens to Cannon EOS RF Mount Adapter, M42 RF Adapter, M42 Lens to EOS RF, Compatible with Canon EOS R Mirrorless Camera EOS R RP Ra R3 R5 R6 R7 R10

Fotasy FD Mount Lens to Cannon EOS RF Mount Adapter, FD EOS R Adapter, FD RF, FD FL Classic Manual Lense Adapter, Compatible with Canon EOS R Mirrorless Camera EOS R RP Ra R3 R5 R6 R7 R10

Fotasy Copper PK Lens to Canon EOS RF Mount Adapter, Pentax K EOS R Adapter, Compatible with Pentax K Mount Lense & Canon EOS R Mirrorless Camera EOS R/RP/Ra / R5 / R6