Amazon.com : Pentax-A A SMC 50mm 50 mm 2 1:2 K : Electronics
Sigma 50mm f2.8 EX DG Macro lens for Pentax Digital and film SLR cameras: Amazon.co.uk: Electronics & Photo
Amazon.com : TTArtisan 50mm F1.2 APS-C Large Aperture Cameras Lens Manual Focus MF Compatible with L Mount Camera L Mount Leica T、TL、TL2、CL、Sigma FP : Electronics
Asahi Pentax SMC Pentax-M 1:2 2 50mm 50 mm für Pentax PK Bajonett: Amazon.co.uk: Electronics & Photo
Amazon.com : Pentax-A A SMC 50mm 50 mm 2 1:2 K : Electronics
TTArtisan APS-C 50mm F1.2-APS-C Lenses-TTArtisan Official Website
Pentax smc DA 16-50mm f/2.8 ED AL (IF) SDM Lens: Amazon.co.uk: Electronics & Photo