Tokina announces the AT-X 12-28mm wide zoom lens. The 12-28mm focal range with a constant f/4 aperture adds flexibility for lanscape photographers interested in experimenting with composition on the super-wide end of the spectrum while maintaining the standard lens range. Specifically designed for APS-C sensor DSLRs, the new optical design corrects for distortion and keeps your photos sharp, even at the edges.
See the full press release from Tokina below:
Kenko Tokina USA, Inc. is pleased to announce the new Tokina AT-X 12-28 mm F/4 lens.
Wide Zoom Range
The new Tokina AT-X 12-28 mm F/4 lens has a super-wide to standard zoom range while
maintaining a constant fast f/4.0 aperture. This makes it a very versatile lens for different
photo applications such as scenery, street scenes photography and event coverage. The
lens is designed for DSLR cameras with APS-C (DX) sized sensors.
New Optical Design
A new optical design using aspherical elements and super-low dispersion glass matches even
the highest mega-pixel DX sensors cameras available today.
One aspherical lens element is positioned in the front group. This together with another
precision molded glass aspherical lens element placed in the rear group ideally focuses
marginal light rays and maintains sharpness at the edges while also correcting distortion. The
use of two different SD (Super-low Dispersion) glass elements, type FK01 and FK03, corrects
chromatic aberration. The combination of all these specialized elements in the optical design
yield excellent sharpness and color.
New auto focus mechanism
The new AF “GMR magnetic precision” control sensor is capable of fast auto-focus. Tokina
placed the new sensor closer to the drive unit in the lens for faster communication between
the controller and AF motor. This combined with the motor's high-precision focus control
yields faster, more accurate auto-focus.
Additionally, a brand new “SD-M” (Silent Drive-Module) has greatly lowered the sounds
emitted by the auto focus drive system allowing for much quieter AF. Both Canon and Nikon
mounts have a built-in AF motor to make them auto-focus compatible with all current camera
Compact body design
The Tokin AT-X 12-28 mm F/4 compact design makes the lens easy to carry and handle.
Manual focus is achieved through Tokina's one-touch focus clutch AF/MF mechanism. Simply
slide the manual focus ring forward for auto-focus or back for manual focus operation. The
lens focus ring is damped in the manual mode for smooth and precise focusing.
In addition the lens has a 77mm filter size allowing filters such as the Hoya HD2 low-profile
circular polarizer or UV to be used.
Focal Length: 12-28MM
Equivalent Focal Length: 18-42MM Nikon
Maximum Aperture: F/4
Minimum Aperture: F/22
Optical Construction: 14 Elements / 12 Groups
Coatings: Multi-layer coatings
Angle of View: 99.37° – 54.73°
Minimum Focus Distance: 9.8 in. (25cm)
Reproduction Ratio: 1:4.94
Zooming System: Rotary Zoom
Number of Diaphragm Blades: 9 curved blades
Filter Size: 77mm
Maximum Outer Diameter: 3.31n. (84mm)
Dimensions: 3.31in. (84mm) x 3.54L in. (90mm)
Weight:: 18.70 oz. (530g)
Lens Hood: BH-77B
Mount Availability: Canon, Nikon
Est. Street Price: $599.00
Kenko Tokina USA, Inc. is the U. S. distributor for Tokina lenses, Hoya filters, Kenko
binoculars and photo accessories and SLIK camera support systems. Kenko Tokina USA
provides marketing, sales, distribution, and technical/consumer service and support. Kenko
Tokina is located in Huntington Beach, CA and on the Web at www.kenkotokinausa.com.