Pentax 50-200mm f/4.0-5.6 ED DA-L Lens for Pentax and Samsung DSLR Cameras

50-200mm DA-L Telephoto Zoom Lens with f/4-5.6 maximum aperture for Pentax DSLR camerasIncorporates extra-low-dispersion (ED) glass lens element and 2 aspherical lens elementsResponsive Quick-Shift Focus System allows instant shifts from auto to manual focusIncludes lens hood to minimize flare and ghost images; 4x zoom coverage in telephoto rangeMeasures 2.6 inches in diameter and 3.1 inches long; weighs 9.2 ounces
Product DescriptionDesigned for exclusive use with Pentax KAF-mount digital

Source: Digital Camera and Video Store...