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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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PK - Nik F For Pentax K mount lens Nikon F camera D750 D850 Mount Adapter Ring KA KAF KAF2 AI Correction Glass Focus to infinity - AliExpress
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Amazon.com : Fotodiox Pro Lens Mount Adapter Compatible with Pentax K AF (KAF) Lenses to Nikon F-Mount Cameras : Electronics
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