Pentax SMC Pentax 200mm f/4 - Pentax K Mount

This Pentax K-mount telephoto prime is a successor to the M42 Takumar versions, featuring updated Super Multi-Coating and a revised mechanical design. It provides a useful 200mm reach with a constant f/4 maximum aperture, suitable for wildlife and sports where a compact telephoto is preferred over larger zoom lenses. It includes a built-in extendable lens hood and a standard 58mm filter thread. When purchasing a used SMC Pentax 200mm, inspect the built-in hood for stiffness or excessive looseness. The lens has several large glass elements, so checking for fungus or internal clouding is essential. SDS tests the diaphragm for snappy movement and ensures the long focus throw remains smooth without any dry spots in the lubrication, which can occur as these lenses age.