Blending a concise wide-angle zoom range with a fast, constant maximum aperture, Tokina has just announced the AT-X 14-20mm f/2 PRO DX lens, which is dedicated to Canon EF APS-C and Nikon F DX-format shooters, providing a 22.4-32mm or 21-30mm equivalent focal-length range, respectively. Rare for a zoom, this lens is uniquely characterized by its bright f/2 maximum aperture that affords consistent low-light performance throughout the zoom range to benefit working in difficult lighting conditions. Also, the variety of wide-angle perspectives afforded by this lens is especially well suited for environmental and astrophotography applications, as well as interior, reportage, and landscape photography.
Moving beyond the distinct focal length and aperture combination, the lens also separates itself through the inclusion of one plastic-molded aspherical element, two Super Low Dispersion (SD) elements, and two glass-molded aspherical SD elements. Combined, these aspherical and low-dispersion designs aim to reduce chromatic and spherical aberrations throughout the zoom range for improved clarity and sharpness, as well as controlled distortion and more accurate color rendering. A multi-layer anti-reflective coating has also been applied to individual elements to suppress lens flare and ghosting for increased contrast when working in harsh lighting conditions.
Complementing the imaging assets, the AT-X 14-20mm f/2 PRO DX lens also sports an internal focusing design that limits the overall lens length during use and quickens autofocus speeds. A One-Touch Focus Clutch Mechanism is also employed for fast switching between manual and autofocus modes by simply sliding the focusing ring.
Announced alongside the lens itself is the dedicated petal-shaped BH-823 Lens Hood, which helps to prevent stray light from causing unwanted lens flare.
|AT-X 14-20mm f/2 PRO DX Lens|
|Lens Mount||Canon EF, Nikon F|
|Focal Length (35mm Equivalent)||14-20mm (Canon: 22.4-32mm; Nikon: 21-30mm)|
|Angle of View||91.7-71.8°|
|Minimum Focusing Distance||11″ / 28 cm|
|Lens Construction||13 elements / 11 groups|
|Filter Thread Diameter||82mm|
|Dimensions||3.5 x 4.2″ / 89 x 106mm|
|Weight||1.6 lb / 725 g|