Pentax Takumar (Bayonet) 135mm f/2.5 - Pentax K Mount

The Takumar (Bayonet) 135mm f/2.5 is a Pentax K-mount prime lens that was marketed as a more affordable alternative to the SMC Pentax series. Despite lacking the SMC multi-coating, it remains a popular choice for portraiture due to its fast f/2.5 maximum aperture and focal length. It features a built-in retractable lens hood and a solid metal construction typical of the era. When purchasing used, verify that the integrated hood slides smoothly and stays in place. SDS checks for internal dust and the presence of fungus, which can be more visible in these simpler optical designs. The aperture ring should click decisively at each stop, and the focus throw should be smooth. Note that as a 'Takumar' bayonet lens, the coatings are less advanced than 'SMC' branded versions, making it more susceptible to flare.