• 50-135mm telephoto zoom lens with F/2.8 maximum aperture for Pentax digital SLR cameras
• Aspherical elements, special optical-glass elements, and original glass coatings
• Tightly sealed weather- and dust-resistant housing stands up to rainy or dusty conditions
• SDM system produces smooth, quiet autofocusing; SP coating protects exposed lens elements
• Measures 3 inches in diameter and 5.4 inches long; weighs 24.2 ounces without hood

Product Description
The smc PENTAX-DA 16-50mm f/2.8 ED AL[IF]SDM wide angle zoom lens delivers the highest level of optical quality and includes SDM technology for fast, accurate, quiet focus. Bringing together advanced optical technologies, including aspherical elements, special optical-glass elements and original lens coatings, these new interchangeable lenses are superior to any existing lens series in terms of contrast, clarity and edge-to-edge sharpness.Amazon.com Product Descr… More >>