The new Tokina AT-X 11-20mm F/2.8 PRO DX lens featuring an expanded zoom
range and improved optical performance. Designed for use with Canon and Nikon
DSLR cameras with APS-C (DX) sensors.
Tokina adds to its family of fast-aperture wide-angle zooms focused on providing
photographers professional quality optics and construction at an affordable
price. The fast F/2.8 aperture lens offers an equivalent 16.5-30mm zoom range.
The new proprietary optical design 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 three SD (super-low
Dispersion, FK01 and FK03) glass elements to control chromatic aberrations.
This compact ultra wide-angle zoom lens has a bright, constant F/2.8 aperture
making viewing and auto focus possible in low light situations but still
maintaining portable size and weight.
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.