The pentax 100mm f28 smc d fa wr macro lens has been designed for digital and film slr cameras and provides a 11 life size reproduction its solid weather resistant construction makes the pentax 100mm f28 macro lens reliable enough to use under all kinds of conditions regardless of your subject insect or flower photography need never be cancelled due to bad weather its maximum aperture of f28 and 8 rounded aperture blades also make the 100mm macro lens ideal for portraiture while the pe