This 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, Mark III, and others. 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 senor
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
Tokinas 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