With Extra-low Dispersion (ED) glass lens element and two aspherical lens elements, the lens offers more true-to-life image reproduction. The image circle in DA-series lenses is designed to perfectly match the 23.5mm x 15.7mm size of the CCD used in Pentax digital SLRs to optimize camera performance. The new design also contributes to a drastic reduction in size, weight and production cost, compared to 35mm-format counterparts with similar specifications.
Metal Pentax KAF Lens Mount
Equivalent focal length to 18.5mm-37mm in the 35mm format with *ist DSLRs
Extra-low Dispersion (ED) glass for superior sharpness and color correction
Responsive “Quick-Shift Focus System” allows instant shift from AF to MF
The image circle is designed to match the CCD used in Pentax digital SLRs
Comes with a lens hood to minimize flare and ghost images