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. more info

Lens making is an art - Nikon artisans craft Nikkor optics from the finest materials, taking pride in adding their intellect and technique to bring the world's finest lenses to life. They push the leading edge of lens making, harder and harder, in their effort to provide the glass that makes the world's greatest pictures.PRODUCT FEATURES:Designed for Nikon D-Series digital SLR;Design enables a combination of wider angle-of-view with optical characteristics that are optimized for Nikon digital SLR camera sensors;2X Zoom ratio and variable angle-of-view from 99? at 12mm to 61? at 24mm;Comparable to that of an 18-36mm lens on 35mm size sensor format;Nikon design that produces a smaller image circle (the size of the image that is projected by the lens on to the sensor) enabling smaller lens diameter, and optimal image quality from center-to edge-to-corner on the image;Exclusive Silent Wave Motor enables ultrahigh-speed autofocusing with exceptional accuracy and powerful super-quiet operation;2 Extra-Low Dispersion (ED) glass elements for minimized chromatic aberration;3 Aspherical lens element for low distortion Internal Focusing (IF) design for smoother focusing and great body balance;M/A mode enables instant switching from autofocus to manual with virtually no time lag even during AF servo operation;Nikon D-type design provides precise distance information for flash and ambient light exposure processes;Rounded diaphragm to make out-of-focus elements appear more natural;DX Nikkor is designed exclusively for use with Nikon Digital SLR models;11.8 close focusing distance throughout zoom range. more info

Tokina 12-24MM F4 Pro II Zoom Lens for Digital Nikon SLR Cameras more info