This DA-star lens has O-rings and gaskets to repel moisture and dust. Plus, the lenshood has a clever finger window that slides off to allow access to filters.
One of Pentax's top rated DA* ("DA star") lenses, and a stablemate to the well-reviewed 200mm f/2.8, this 450mm equivalent ($1,300 street) is a digital-only prime for APS-sensored DSLRs. It incorporates O-rings and gaskets to repel moisture and dust, Pentax's "Super Protective" SP coating that makes easy work of removing front-element smudges, and extra-low-dispersion glass for added sharpness. It also has the Pentax sonic-drive autofocus motor (SDM) that adds speed and cuts AF noise, but only on newer Pentax bodies (K100D owners will be disappointed).
|Full-Time Manual Focus Override:||Yes|
|Minimum Focal Length:||300 mm|
|Maximum Focal Length:||300 mm|