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Amazon.com : Urth Lens Mount Adapter: Compatible for Nikon Z Camera Body to Pentax K Lens : Electronics
Amazon.com : K&F Concept Lens Mount Adapter Compatible with Nikon Lens to Pentax K PK Mount Adapter with Glass for Pentax : Electronics
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Amazon.com : Fotodiox Lens Mount Adapter, Pentax K (PK) to Micro 4/3 Olympus PEN and Panasonic Lumix Cameras : Electronics
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Nikon Nikkor F Mount D/SLR Lens to Pentax K (PK) Mount SLR Camera Body Pro Mount Adapter – Fotodiox, Inc. USA
Amazon.com : K&F Concept PK/DA to FX Adapter, Manual Lens Mount Adapter with Aperture Control Ring for Pentax K AF PK DA A Mount Lens Compatible with Fujifilm Fuji X Mirrorless Cameras :
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