Compact Pentax M-series 100mm macro with SMC coating, comfortable working distance in remarkably small dimensions.
The Pentax SMC Pentax-M 100mm f/4 Macro is a compact macro prime for the Pentax K mount from the M-series (1977-84). M-series = Pentax's compact prime generation, more portable than the earlier K series. Manual focus. Pentax K mount.
f/4 maximum aperture. 100mm focal length (full-frame macro prime). Macro capability (1:2 standalone; extension for 1:1). SMC (Super Multi Coating). Manual focus. At approximately 330g. Pentax K mount.
The Pentax-M 100mm f/4 Macro provides a classic 100mm macro working distance — approximately 30cm from subject at 1:2 reproduction — for insect and botanical photography. The compact M-series design makes it portable. Compatible with modern Pentax K digital bodies.
On the used market the Pentax SMC-M 100mm f/4 Macro is a practical vintage macro prime. Condition checks: front element, focus ring through macro range, aperture blades. Pentax K mount — manual focus.