SMC Pentax 50mm F1.4 Reviews - K Prime Lenses - Pentax Lens Reviews & Lens Database,Super-Takumar 50mm F1.4 (8-element variant) Reviews - M42 Screwmount Normal Primes - Pentax Lens Reviews & Lens Database,Pentax Super-Takumar 50mm F1.4 M42 Screw Mount Lens -Declicked for Vid,Pentax 50mm f1.4 Super-Takumar (8 Element) - Lens,Takumar 50mm f1.4 is one of the very best vintage lenses. Here's a review of the four M42 versions.,