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Canon EF lens mount - Wikipedia
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Minolta MD/MC/SR SLR Lens to Canon EOS Mount SLR Camera Body Adapter – Fotodiox, Inc. USA
Viltrox EF-EOS M Lens Mount Adapter for Canon EF or EF-EOS M B&H
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K&F Concept M13131 Canon FD Lenses to Canon EOS EF Lens Mount Adapter with Optic Glass - KENTFAITH
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About Canon RF Lenses and the RF Mount
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Vello Minolta MD Lens to Canon EF/EF-S-Mount Camera LA-CEF-MD