The Tokina AF 10-17mm f3.5-4.5 is a compact and lightweight fisheye zoom lens built for Canon EF-mount DSLRs. This rectangular fisheye delivers a dramatic 180-degree diagonal field of view at 10mm, tapering to a wide 100 degrees at 17mm, making it ideal for creative landscape, architecture, street, and underwater photography. The optical design combines 10 elements in 8 groups with one Super-Low Dispersion glass element to reduce chromatic aberration and deliver clean, sharp imagery. With autofocus capability and a fast f3.5-4.5 aperture range across the zoom, you can shoot intimate 14cm close-focusing work or expansive wide vistas. The water-repellent coating on the front element beads up moisture for easier cleaning and maintenance, and the built-in lens hood minimises flare. Designed for APS-C sensors, this zoom fisheye offers exceptional flexibility and optical performance that rivals prime fisheye alternatives.