Canon EF 24-70mm f/2.8L II USM LensSpanning a popular and versatile range of focal lengths, the EF 24 70mm f 2. 8L II USM is a Canon L series zoom commonly thought of as the workhorse of lenses. Ranging from wide angle to portrait length, this lens is also distinguished by its constant f 2. 8 maximum aperture to benefit working in difficult lighting conditions and to afford greater control over depth of field. The lens is also characterized by its sophisticated optical design, which