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Amazon.com : Opteka 500mm/1000mm f/8 Manual Telephoto Lens Compatible with Canon EF-Mount EOS 90D, 80D, 77D, 70D, 60D, 60Da, 1Ds, Mark III II 7D, 6D, 5D, 5DS, Rebel T8i, T7i, T7s, T7,
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Amazon.com : Lens Mount Adapter Compatible with Canon EF/EF-S Lens to L Mount Cameras Leica SL SL2/Panasonic S1 S1R S1H S5/Sigma FP : Electronics
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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 : Opteka 58MM 0.35x Fisheye Wide Angle Lens Compatible with Canon DSLR Cameras Including Macro Close Up Attachment : Camera Lenses : Electronics
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