Foleto M42 Lens Adapter AF Confirming Ring to for canon M42-EOS Mount With 3.0 Chip 500D 600D 40d 50D 60D 5D2 Black Silver - AliExpress
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Amazon.com : 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