Tokina atx-i 11-16mm f/2.8 CF Lens for Canon EF

Key Features
EF-Mount Lens/APS-C Format
17.6-25.6mm (35mm Equivalent)
Aperture Range: f/2.8 to f/22
Two Aspherical Elements
Two SD Low Dispersion Elements
Multi-Coated Elements
One-Touch Focus Clutch Mechanism
Internal Focusing Design
9-Blade Diaphragm