Pentax's classic M42 telephoto prime — the radioactive thorium-glass Takumar with legendary rendering.
The Pentax Asahi Super-Takumar 135mm f/2.5 is a fast manual-focus telephoto prime from Pentax's Super-Takumar M42 series. M42 screw mount.
135mm focal length. f/2.5 maximum aperture. SMC or Super-Multi Coating. Manual focus. M42 screw mount.
The Super-Takumar 135mm f/2.5 is one of the most capable lenses in the Takumar M42 range — f/2.5 at 135mm is fast for a telephoto prime. Note: early Super-Takumar versions may contain mildly radioactive thorium glass. Adaptable to modern mirrorless via M42 adapters.
On the used market the Super-Takumar 135mm f/2.5 is a capable fast prime. Condition checks: element yellowing (thorium), aperture blades, focus. M42 screw mount.