Canon has introduced two new lenses into its range, two super wide angle lenses join the EF line-up, with one – a 16-35mm, designed for full-frame (35mm) cameras, and the other, a 10-18mm, designed for crop (APS-C) cameras. First up, the EF 16-35mm f/4 is an “L” lens, which places it in Canon’s professional line-up. Designed with landscape, architectural, or those who shoot in confined areas, photographers, Canon promises top notch optical construction, with a constant f/4 maximum aperture throughout.