Compact Pentax K-mount 135mm with SMC coating, ultra-portable portrait telephoto at budget pricing.
The Pentax 135mm f/3.5 in Pentax K-mount is a compact portrait telephoto providing the classic 135mm perspective for the K-mount system. The SMC coating provides excellent contrast and flare resistance, and the compact M-series or A-series design keeps the lens remarkably small and light.
The 135mm focal length delivers flattering portrait compression with comfortable working distance. The f/3.5 aperture provides adequate depth-of-field control for portraits, and the SMC-coated optics produce sharp, contrasty images. Performance is excellent from f/5.6 onwards.
Build quality is compact Pentax K-mount standard with all-metal construction and smooth focusing. The lens is one of the most portable 135mm options for any system, maintaining the Pentax tradition of miniaturised optics without sacrificing image quality.
The Pentax 135mm f/3.5 offers quality portrait telephoto capability at very affordable used prices. The compact dimensions, SMC coating, and K-mount compatibility make it a practical choice for portrait and general telephoto work on Pentax film and digital bodies.