The Tokina AF 12-28mm F4 Pro DX is a wide-angle zoom lens purpose-built for Canon APS-C DSLR cameras. This versatile optic delivers a 19-45mm equivalent focal range, making it ideal for landscape, architecture, interior, and travel photography. The constant f/4 maximum aperture ensures consistent exposure across the entire zoom range. The lens features Tokina's Silent Drive-Module (SD-M) autofocus motor for smooth, quiet AF operation perfect for video work, combined with the innovative one-touch AF/MF clutch mechanism that lets you switch between autofocus and manual focus by simply sliding the focus ring forward or back. Built with aspherical lens elements and ultra-low dispersion glass, this professional-grade optic delivers sharp imagery with minimal distortion throughout the zoom range.