|  Tokina has announced that its 16-28mm F2.8 ultra wide angle zoom lens will be available in Nikon and Canon full-frame mounts. Announced at PMA 2010, the AT-X 16-28 F2.8 PRO FX lens features the company's newly developed AF system that features a quieter Silent Drive-Module (SD-M) autofocus motor and promises more precise focusing. The weather-sealed lens comes with a fixed lens hood and does not incorporate a filter thread. Priced at ¥123, 900 (~ US $1400) the Nikon mount will start shipping From August 6, 2010 while the Canon version will ship from mid-September.
TOKINA AT-X 16-28MM F/2.8 PRO FX Lens 
Tokina AT-X 16-28 F2.8 PRO FX lens
Huntington Beach, CA July 6, 2010 : THK Photo Products, Inc., announces the Tokina AT-X 16-28 AF PRO, 16-28mm f/2.8 AF lens for digital cameras with full frame (FX) sensors.
This new Tokina lens is the first in a new generation of full frame (FX) lenses designed for professional digital SLR cameras like the Canon EOS 5D Mark II and the Nikon D700 and D3x. The 16-28 zoom range gives the professional photographer a super-wide angle of view to get close to subject for dramatic effect or to take in entire scenes. NEW Silent DC Motor with GMR sensor
The 16-28 f/2.8 uses a newly developed silent DC motor that allows the lens to focus faster and more quietly then previous generations. The DC motor coupled with a new GMR magnetic AF sensor work together to increase AF Speed. Ashperical and Super-low Dispersion glass elements
A new, 56mm in diameter, large sizes aspherical glass element is incorporated into the front lens group, while there are 2 more aspherical elements in the rear group. 3 SD super-low dispersion glass elements are also incorporated through-out the optical design to reduce chromatic aberration, give maximum resolution, more even brightness and distortion correction. One-Touch Focus Clutch
Tokina’s exclusive One-touch Focus Clutch Mechanism allows the photographer to switch between AF and MF simply by snapping the focus ring forward for AF and back toward the camera to focus manually. There is no need to change the AF/MF switch on Nikon camera bodies and there is no second AF/MF switch on the lens for Canon, everything is accomplished by the focus ring. | 
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