Tokinas latest addition to its family gives full-frame photographers a 24mm
wide-angle to 70mm moderate telephoto lens with a fast F/2.8 aperture at an
The new groundbreaking proprietary optical design uses three precision molded
all-glass aspherical lens elements to achieve excellent contrast, sharpness, and
corrects for spherical aberrations. One of these elements is very special and
difficult to manufacture. G09, is made from Super-Low Dispersion (SD) glass and
is a large sized aspherical element.
These lens elements also yield even illumination across the whole image sensor.
The Tokina 24-70MM lens also uses three SD (super-low Dispersion, FK01 and
FK03) glass elements in the rear groups to control chromatic aberrations.
All these specialized lens elements work in consort to yield maximum resolution
to match the 50-megapixel DSLR cameras entering the market.
The fast constant F/2.8 aperture makes viewing and auto focusing possible in
very low light situations while keeping some flexibility for setting the shutter
In addition to excellent optics, the lens incorporates a fast moving SDM (Silent
Drive-Module) motor to greatly reduce AF noise making it one of Tokinas
quickest and quietest auto-focusing lenses to date.
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.