These are samples from my past and present lenses. All lenses work with Pentax body.
MC Zenitar - K2,8/16mmTamron 17mm f/3.5 Adaptall SPPentax smc P-A 20mm f/2.8Pentax smc FA f:2.8 20mmPentax SMC FA* 24mm 1:2Carl Zeiss Distagon T* 2/28 ZKSMC Pentax 1:2.8/30SMC Pentax-FA 1:1,8 31mm LimitedSMC Pentax -M 1:2 35mmPentax DA 35mm 2.8Leica Summicron-R 1:2/35SMC Pentax-FA 1:1,9 43mm LimitedSMC PENTAX-A 1:1.2 50mmPentax SMC 1:1.2 50mmSMC Pentax-FA 1:1,4 50mmLeitz Summicron-R 1:2/50Pentax smc P-FA 50mm f/2.8 MacroPentax SMC P-DA* 55mm f/1.4 SDMLeitz 60mm f/2.8 Macro-Elmarit-RSMC Pentax-FA 1:1,8 77mm LimitedSMC Pentax-FA* 1:1.4 85mm IFVoigtlander 90/3.5 APO LantharLeitz 90mm f/2 Summicron-RVivitar Series 1 90mm 1:2.5 VMC MacroSMC Pentax-FA 1:2,8 100mm MACROMeyer-Optik Gorlitz Trioplan 100Carl Zeiss Sonnar T* 2.8/135Voigtlander 125/2.5 APO LantharSMC Pentax 1:2.5 135mmMeyer-Optik Gorlitz Orestor 2.8/135Leitz Elmarit-R 1:2.8/135Voigtlander 180/4 APO LantharSMC PENTAX 1:2.5 200mmLeitz Elmarit-R 1:2.8/180Sigma 17-50mm F2.8 DC Macro EX OS HSMPentax SMC DA 12-24mm f4.0Tamron SP XR Di 28-75 1:2.8 MacroCarl Zeiss Vario-Sonnar T* 3,3-4,0/28-85SMC DA* 50-135mm F2.8ED [IF] SDMLeica Vario-Elmar-R 1:4/80-200Sigma APO 70-200mm F2.8 II EX DG MACRO HSMTamron AF AD IF 24-135mm 1:3,5-5,6 MACROSigma EX APO IF 100-300mm 1:4Sigma 50-500mm F4.5-6.3 APO DG OS HSMSigma 300mm f2.8 APO DGSMC Pentax K 1:4,5/500mmLeitz 560mm f/6.8 Telyt-RCarl Zeiss Jena DDR Tevidon 2,8/70