Pentax 50mm f/1.4 Super-Takumar Manual Focus Lens for M42 Screw Mount {49} at KEH Camera
Amazon.com : K&F Concept FD to M4/3 Lens Mount Adapter Ring Compatible for Canon FD Lens to Micro Four Thirds M43 Olympus Pen and Panasonic Lumix Cameras with Matting Varnish Design :
Amazon.com : Asahi SMC Takumar 50mm 1:1.4 1.4 50 mm - M42 M 42 : Electronics
Amazon.com : Asahi SMC Takumar 50mm 1:1.4 1.4 50 mm - M42 M 42 : Electronics