The upgraded classic Nikon F-mount Tokina atx-i 11-20mm f/2.8 CF lens is an ultra-wide lens ideal for landscape, architecture, interior, and astrophotography applications. The bright f/2.8 maximum aperture ensures consistent brightness throughout the zoom range, making it easier to shoot in available light conditions.

The optical design includes a series of aspherical and low-dispersion elements, which reduce various distortions for improved sharpness and clarity. Individual elements are also multi-coated to withstand reflections and ghosting, offering greater contrast and color accuracy in bright or backlit conditions.

Complementing its optics, this lens features a One-Touch Focus Clutch mechanism for quick switching between AF and MF settings, while an internal focusing design is used for quick focus response.