Pk-c Mount Lens Adapter Ring For Pentax K Pk Lens To C Mount 16mm Cctv Film Cinema Camera - Lens Adapter - AliExpress
Pixco P/K 16mm C Mount Lens Adapter Ring Suit For Pentax K Mount Lens to 16mm C mount Film Camera ring lens mount adapter|ring lens|lens adapter ringadapter ring - AliExpress
Sigma 8-16mm F4.5-5.6 DC HSM Lens For Pentax K Mount Specifications | Neocamera