Pentax's medium-format macro — the SMC Pentax 67 100mm f/4 Macro for close-up work on 6x7.
The SMC Pentax 67 100mm f/4 Macro is a close-focusing lens for the Pentax 6x7 medium-format system, from the later SMC Pentax 67 generation of the line. Introduced in 1998, it is the macro-capable near-standard of the system, designed for close-up work on the large 6x7 negative as well as general shooting.
This is a manual-focus lens for the Pentax 67 bayonet mount, covering the 6x7 cm frame. It has a fixed 100mm focal length and a maximum aperture of f/4. The macro designation reflects an optical design corrected for close subject distances, and the Super Multi Coating denoted by the SMC prefix controls flare through the near-standard field.
A 100mm macro on the 6x7 frame gives a comfortable working distance for close-up subjects while doubling as a short portrait and general lens. The close-focus correction keeps detail crisp at short range, which pays off given how much resolution the big negative can record for still-life, nature and product work.
On the used market this macro is a sought-after and pricier member of the line, valued for filling the close-up niche. Confirm the long focus helicoid runs smoothly through its extended range, inspect for haze and fungus, and check the aperture blades are dry. It can be adapted to mirrorless through a Pentax 67 mount adapter for close work on digital.