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Did Leica just veto the Sigma MC-21 Canon EF adapter for L-mount? So much for an alliance! – EOSHD.com – Filmmaking Gear and Camera Reviews
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Sony A7iii + Sigma MC-11 Lens Adapter Review - Extremely affordable and better than Metabones?! - YouTube
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Amazon.com : Sigma MC-11 Mount Converter Lens Adapter (Sigma EF-Mount Lenses to Sony E Cameras) with Altura Photo Essential Accessory Bundle : Electronics
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New Sigma MC 11 Lens Adapter Converter for Canon EOS EF lens to Sony E mount Camera A9 A7R3 M3 R2|Lens Adapter| - AliExpress
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