Pentax SMC Pentax 135mm f/3.5 - Pentax K Mount

The SMC Pentax 135mm f/3.5 is the K-mount version of the classic Takumar design, released as part of the initial K-series lens line-up. It is larger and heavier than the subsequent 'M' version, offering a substantial feel and excellent mechanical tolerances. The lens is known for its sharpness even wide open and smooth 'bokeh' in the out-of-focus areas, making it a popular choice for traditional portrait photography. Used buyers should look for signs of wear on the aperture ring and ensure the diaphragm blades are free from oil. The large front element should be checked for coating scratches or 'cleaning marks'. SDS performs a thorough check of the focus helicoid to ensure it hasn't become stiff with age and verifies that the internal optics are free from moisture-related issues or fungus.