The smc Pentax-DA* series has been developed through Pentax’s unending pursuit of the ultimate image quality in digital photography. Bringing together its advanced optical technologies, including aspherical elements, special optical-glass elements and original lens coatings, Pentax has successfully developed a new interchangeable lens series that is superior to any existing lens series in terms of contrast, clarity and description, even at the edges.
The Pentax-DA* zoom lenses come equipped with a SDM System, which assures smoother, quieter autofocusing operation using a built-in supersonic motor. When mounted on a Pentax K10D or K100D Super Digital SLR camera body, the focus mode is automatically switched to SDM-assisted autofocusing. When mounted on other Pentax digital SLR camera bodies, the conventional autofocus mode using a camera-mounted motor is selected.
