DESCRIPTION

The AT-X 280 AF PRO is constructed with high quality optical glass multicoated lens elements created by Hoya Corporation, the worlds largest manufacturer of optical glass. Two Aspherical lens elements and one SD (super low dispersion) glass element are employed in the optical design to insure critical sharpness across the film plane. One aspherical element is molded as one piece of optical glass created with technology pioneered by Hoya. The other is a hybrid aspherical element.