Ultra Wide. Improving on its predecessor, the Tokina 11-20mm f/2.8 AT-X PRO DX for Canon offers APS-C shooters a focal length equivalent to 17.5 to 32mm after sensor crop. This produces a field of view of 104.34° to 72.42°, making it a great choice for landscapes, cityscapes, architecture, and interiors.

Fast Aperture. Its f/2.8 constant-aperture throughout the zoom range gives flexibility in low-light shooting. It also enables better subject-background separation than the slower variable-aperture ultra-wides.

Optics. The twelve-group/fourteen-element design features one hybrid aspherical element and two glass-molded aspherical elements to minimize distortions and correct aberrations, while three ultra-low dispersion elements improve color accuracy and image clarity. Its internal focusing system has a one-touch focus clutch mechanism for quick switching from auto to manual focus. We also rent the Tokina atx-i 11-16mm f/2.8 CF Lens if you are looking for something comparable.