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1KIND Photography: Complete 3rd Party Adapter List: Canon EF to EOS R (RF) Lens Mount Adapter Mirrorless Cameras
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Amazon.com : Canon Mount Adapter EF - EOS R, Compatible with EOS RP, EOS R, EOS R6, EOS R5 : Electronics
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Amazon.com : NEEWER EF to EOS R Mount Adapter with Drop in CPL Filter, Autofocus Lens Converter Ring Compatible with Canon EF/EF-S Lens to EOS R EOS Ra EOS RP EOS R5
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