Versatile Wide-Angle Zoom. The Tokina opera 16-28mm f/2.8 FF for Canon is a fast, versatile ultrawide-angle zoom for full frame cameras that’s great for landscape photography, architectural photography, and astrophotography. Using a Canon crop frame camera? You’ll get a moderately wide 25.6-44.8mm equivalent focal length.

Silent-Drive Autofocus System. The silent-drive autofocus motor gives you fast, accurate, and quiet performance that’s great for still and video shooting alike. You also get full-time manual focusing for precision adjustments. The One-Touch Focus Clutch Mechanism lets you easily switch between AF and MF modes by snapping the focus ring back and forth.

Constant f/2.8 Aperture. The constant f/2.8 maximum aperture makes it great for working in available light, and gives you depth-of-field control for subject-background isolation. The nine-blade diaphragm contributes to a pleasing bokeh quality, while the built-in petal-shaped hood helps prevent flare.

High-Quality Optics. The thirteen-group/fifteen-element optical formula includes three aspherical elements, three glass-molded low-dispersion elements, and a bulbous front element to reduce chromatic aberrations and distortion. Each individual element has a multi-coating to combat flare and ghosting while maintaining high contrast and accurate color fidelity.