Tokina AT-X 11-20mm f/2.8 PRO DX Lens for Nikon F An updated classic, designed for more intuitive and interactive use, the Tokina AT-X 11-20mm f/2.8 PRO DX Lens for Nikon F is an ultra-wide zoom that is ideal for landscape, architecture, interior, and astrophotography applications. Tokina AT-X 11-20mm f/2.8 PRO DX Lens for Nikon F has a bright f/2.8 constant maximum aperture which affords consistent brightness throughout the zoom range and benefits working in available lighting conditions. The optical design of the Tokina AT-X 11-20mm f/2.8 PRO DX Lens for Nikon F incorporates a series of aspherical and low dispersion elements, which suppress a variety of aberrations for improved sharpness and clarity. Individual elements are also multi-coated to resist flare and ghosting for greater contrast and color accuracy when working in bright or backlit conditions. Complementing the optics, this Tokina AT-X 11-20mm f/2.8 PRO DX Lens for Nikon F features a One-Touch Focus Clutch Mechanism for fast changing between AF and MF settings, and an internal focusing design is used for responsive focusing performance. Tokina AT-X 11-20mm f/2.8 PRO DX Lens for Nikon F has an ultra-wide zoom designed for APS-C-format Canon EF-mount cameras and provides a 17.6-32mm equivalent focal length range. Tokina AT-X 11-20mm f/2.8 PRO DX Lens for Nikon F has a bright constant f/2.8 maximum aperture that affords consistent brightness throughout the zoom range and offers improved control over depth of field. The Tokina AT-X 11-20mm f/2.8 PRO DX Lens for Nikon F has three aspherical elements, including two glass-molded elements and one P-MO hybrid element, help control spherical aberrations and distortions for sharper, more accurate rendering. The Tokina AT-X 11-20mm f/2.8 PRO DX Lens for Nikon F has three SD (super-low dispersion) elements control color fringing and chromatic aberrations throughout the zoom range for greater clarity and color accuracy. Tokina AT-X 11-20mm f/2.8 PRO DX Lens for Nikon F has an anti-reflective multi-layer coated elements which suppress flare and ghosting for improved contrast and color accuracy when working in strong lighting conditions. Tokina AT-X 11-20mm f/2.8 PRO DX Lens for Nikon F has a Silent-Drive focusing Motor (SD-M) which pairs with a GMR sensor and an internal focusing design to achieve fast, responsive, and precise performance. Tokina AT-X 11-20mm f/2.8 PRO DX Lens for Nikon F has one-Touch Focus Clutch Mechanism that avails quick switching between autofocus and manual focus settings by either pushing or pulling the focus ring. When set to manual, focus response is especially smooth and benefitted by hard stops at the ends of the focusing range. Tokina AT-X 11-20mm f/2.8 PRO DX Lens for Nikon F has water-repellent top coating which makes wiping and cleaning the surface of the front glass element easier. Tokina AT-X 11-20mm f/2.8 PRO DX Lens for Nikon F has nine-blade diaphragm which contributes to a smooth bokeh quality. The Tokina AT-X 11-20mm f/2.8 PRO DX Lens for Nikon F has an included lens hood blocks stray light from causing flare and also offers some physical protection the the lens.
