SUPER-WIDE, ULTRA-FAST WIDE ANGLE ZOOM
The Tokina AT-X 14-20mm PRO DX is a wide-angle zoom lens with super-fast
f/2.0 aperture. This is the fastest lens ever made by Tokina. The lens is
designed for use with either Canon or Nikon DSLR cameras with APS-C (DX)
Tokina adds its fastest lens to date to its family of fast-aperture wide-angle
zooms focused on providing photographers professional quality optics and
construction at an affordable price. The extremely fast F/2.0 aperture lens
offers an equivalent 21-30mm zoom range. The super-bright, constant F/2.0
aperture makes viewing, auto focus and shooting possible in very low light
situations while still maintaining reasonable size and weight.
The 14-20mm F/2.0 has an all-new proprietary optical design that uses three
aspherical lens elements (2 all-glass molded and 1 P-MO hybrid) to achieve
superior contrast, sharpness, and correct for spherical aberrations.
Additionally, Tokina uses of an four SD (Super-low Dispersion, FK01 and FK03)
glass elements to control chromatic aberrations.
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 lens mount for manual focusing. The lens is also designed to
stand up to the rigors of daily use by photographers in a wide variety of
shooting conditions and environments.