Super Takumar 2.4/105 yellowing affects image quality?? - PentaxForums.com
Amazon.com : Fotodiox Pro Lens Mount Adapters, Pentax 6x7 (P67) Mount Lenses to to Sony E-Mount Mirrorless Camera Adapter - for Sony Alpha E-Mount Camera Bodies (APS-C & Full Frame Such as
PENTAX Super Multi-Coated SMC Takumar 6x7 90mm F2.8 F/2.8 M42 Screw Mount MF Lens #55879 : Electronics - Amazon.com
Amazon.com : PENTAX Super Multi-Coated SMC Takumar 6x7 90mm F2.8 F/2.8 M42 Screw Mount MF Lens #55879 : Electronics
Asahi Super Multi-Coated Takumar 6x7 1: 4/200/1: 4 200 mm 200 mm for Pentax 6x7: Amazon.de: Electronics & Photo