The 17-35mm f/4 Pro FX Lens for Canon Cameras from Tokina is designed for use with a Canon full frame digital or film camera. This ultra wide-angle lens gives you a 103.9° angle of view at the 17mm end of the zoom, and a bright, constant f/4.0 maximum aperture, making it ideal for low light photography. Two Super-Low Dispersion glass elements and one aspheric glass element produce superior contrast and sharpness, and help control chromatic aberration.