The smc PENTAX-D FA Macro 100mm F2.8 WR lens is designed for digital and film SLR cameras. It utilizes curvature and positioning of optical elements to virtually eliminate flare and ghosting for clear, high-quality images. Achieving life-size (1:1) magnification, it features our acclaimed multi-layer coating to lower surface reflection, reduce ultraviolet rays, and deliver clear, high-contrast images. PENTAX SP (Super Protect) coating keeps the elements at bay, while the Quick-Shift Focus System allows for instant switching from auto to manual focus. The aluminum construction with weather resistant seals offers excellent reliability in damp, inclement conditions.