Pentax 16-50mm f/2.8 ED AL IF SDM Lens

The Pentax DA Star 16-50mm Wide-Angle Zoom Lens delivers the ultimate level of optical image quality for portraits, landscapes, family photos, and general use. The tightly sealed, weather- resistant, and dust-resistant construction enhances durability for use in both rainy and dusty conditions. Switch instantly from autofocus to manual focus operation with the quick-shift focus system. Super Protect coating repels dust, water and grease to keep your lens clean and your image quality at its peak. The SDM focus system incorporated in this lens results in a smoother, quieter autofocus operation using a built-in supersonic motor. Two extra-low dispersion elements and 3 aspherical elements compensate for chromatic aberration. The focal length is equivalent to 24-1/2mm to 76-1/2mm in the 35mm format.