Pentax SMC DA 50-200mm f4-5.6 ED WR Zoom Lens Pentax Ricoh# 21870 This lens is weather sealed. (Not to be mistaken with the 50-200 DA L which is not sealed). SP coating keeps the lens free of grease, dust and other elements which could impact lens function and image quality. This lens features an Extra-low Dispersion (ED) glass lens element and two aspherical lens elements for true-to-life image reproduction and overall size reduction. The image circle in DA-series lenses is designed to perfectly match the APS size of the sensor used in PENTAX digital SLRs to optimize camera performance. Not recommended for full size sensors. Overstock - lenses are brand new and NRFB Shipped UPS Ground to continental U.S. only. No exceptions. No sales tax when shipped outside of California.