Amazon.com : Rokinon 35mm F/1.4 AS UMC Wide Angle Lens for Pentax RK35M-P : Camera Lenses : Camera & Photo
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File:Vintage Asahi Pentax Spotmatic 35mm SLR Film Camera With Super Takumar 1.4 Lens, Made In Japan, Circa 1964 - 1967 (35210653374).jpg - Wikimedia Commons
Amazon.com : Sigma 35mm F1.4 ART DG HSM Lens for Pentax : Camera Lenses : Camera & Photo
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Rokinon 35mm f/1.4 AS UMC Lens for Pentax K RK35M-P B&H Photo
Sigma 35mm f/1.4 DG HSM Art Lens for Pentax K 340109 B&H Photo
Pentax K-1 with 35mm f/1.4 Sigma Art lens review - YouTube