Pentax smc Pentax 67 45mm f/4 - Pentax 67 Mount

The smc Pentax 67 45mm f/4 is an ultra-wide-angle lens for the Pentax 67 medium format system, providing a field of view roughly equivalent to a 23mm lens in 35mm format. It is highly regarded for its minimal distortion and sharpness across the frame, making it a staple for landscape and architectural photographers using the 6x7 format. This later 'smc' version features improved coatings to reduce flare and ghosting. Check the condition of the large front element, as it is susceptible to marking if not protected. The manual focus action should be smooth without dry spots. SDS inspects the internal leaf-style aperture for oil contamination and ensures the mount is secure. Given the vibrations produced by the 67 system, we also check that all internal optical groups remain firmly seated and properly aligned.