DA* 200mm F2.8 ED [IF] SDM - Overview
This is a fast high-performance DA* series lens. Its ultrasonic focus assures extremely fast and silent operation. High-quality extra-low dispersion glass, ED lens, elements provide for absolutely brilliant image quality. Additionally, the inner focusing design offers convenient and comfortable operation. The lens is completely sealed against dirt and splashes, and the special PENTAX SP coating further protects the front lens element against dirt or other contamination.