Tokina Debuts Upgraded AT-X 12-28 Pro DX Lens

Tokina Debuts Upgraded AT-X 12-28 Pro DX Lens


Huntington Beach, CA—Kenko Tokina Co. released the AT-X 12–28mm f/4 Pro DX lens, the successor to its AT-X 124 Pro DX II. The wide-angle to semi-standard zoom lens has an increased telephoto focal length from 24mm to 28mm for greater versatility.

A new optical design matches even 20 megapixel DX sensors, and the company improved its color balance and the lens’s creative blur bokeh effect. The lens is said to achieve higher image definition through the use of glass-molded aspherical lens elements and the inclusion of ultra-low dispersion glass. An aspherical P-MO lens element is positioned in the front group, which works with a molded glass aspherical lens in the rear group to correct aberrations and distortion. And SD glass (ultra-low dispersion glass) FK01 and FK03 was used to emulate fluorite glass in performance and eliminate chromatic aberration.

Also new is an autofocus control sensor—a “GMR (magnetic precision) sensor” capable of high-resolution autofocus that is mounted close to the drive unit for better efficiency. Plus, the lens employs a newly developed SD-M (silent drive-module) to lower the sounds emitted by the AF drive. Using a one-touch focus clutch AF/MF mechanism, photographers can slide the manual focus ring forward for AF or rearward for MF operation. The Nikon mount version has a built-in autofocus motor.

Tokina’s AT-X 12–28mm f/4 Pro DX lens in a Nikon mount will be released later this spring, and the Canon mount version is scheduled for summer 2013.