Sigma 28-300mm f/3.5-6.3 DG IF Macro Aspherical Lens for Pentax and Samsung SLR Cameras

Compact high performance zoom lens with a 10.7x high zoom ratio, 28 to 300-millimeter focal lengthSpecial low dispersion glass and aspherical lenses produce high level of optical performance19.7-inch minimum focusing distance with macro mechanism for close-up photography at full zoomZoom lock device prevents zoom setting from being changed inadvertentlyDesigned for Pentax digital SLR cameras
Product DescriptionSigma 28-200mm f/3. 5-5. 6 DG Compact Aspherical Macro Autofocus Lens for Pentax

Source: Digital Camera and Video Store...