Benefits. 24mm wide-angle lens (38mm equivalent on APS-C sized sensors). Fast f/2.8 maximum aperture. Up to four-stop Image Stabilizer. Ultrasonic autofocus mechanism. 0.2m close-focusing distance. Circular aperture for soft background blur. Super Spectra coatings reduce flare. New. One of the most versatile lenses available, the EF 70-200mm f/2.8L IS III USM from Canon is an L-series telephoto zoom distinguished by its bright design and advanced optics. Ideal for a variety of subjects ranging from portraiture to sports, the fast constant f/2.8 maximum aperture excels in difficult lighting conditions and also offers GNsYJGx.