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Amazon.com : Fotodiox Lens Mount Adapter - Contax/Yashica (C/Y CY) SLR Lens to Nikon Nikkor F Mount Digital Cameras : Camera Lens Adapters : Electronics
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Amazon.com : K&F CONCEPT Lens Mount Adapter Contax Yashica C/Y Lens to EF Adapter, for 1D, 1DS, Mark II, III, IV, 5D, Mark II, 7D, 30D, 40D, 50D, 60D, 70D, Digital Rebel
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