Pentax 135mm F/2.5 Prime Portrait Lens for Pentax Pk-mount - Etsy
Mounting a Zwo camera with SLR lens - Beginning Deep Sky Imaging - Cloudy Nights
Some of the best camera lenses I'm using. Hard to say which is my favourite, but I think that the top-right Super-Takumar 50mm f1.4 (1964) is the most fantastic here! : r/BuyItForLife
The Super Takumar 135 mm f/ 2.5 (P.No.43801) Lens. Specs. MTF Charts. User Reviews.
Pentax K-Mount Takumar Bayonet 135mm f2.5 Full Frame Portrait Lens – Cardinal Camera Used
Asahi Pentax M42 2.5/135mm Super-Multi-Coated Takumar | JO GEIER - MINT & RARE