DESCRIPTION

The AT-X 242 AF is the first lens to start at 24mm and zoom all the way to 200mm. Chrome-plated brass mount plates and combination aluminum/composite lens barrels reduce weight while maintaining strength and durability. Optically, it uses high quality optical glass multicoated lens elements. Two aspherical lens elements and one SD (super low dispersion) glass element are employed in the optical design to insure sharpness across the film plane. The aspherical elements are each molded as one piece of optical glass, rather than a resin laminated to a glass core.