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Pixco Pentax 67 lens to Pentax PK K mount adapter Pentax K 3, K 50, K 5 II, K 30, K 01, K 5, K r, K x, K 7, K m, K20D, K200D, K1|Lens Adapter| - AliExpress
Urth Nikon F (G type) to Sony E Lens Mount Adapter | Urth International
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Mamiya 645 M645 Lens to Pentax PK Mount Adapter PK K1 K3 K32 K52 KR KS KS2 K1000 | eBay
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Amazon.com : Urth Lens Mount Adapter: Compatible for Nikon F Lens to Pentax K Camera Body : Electronics
