Das EF 16–35 mm f/2.8L III USM ist ein hochwertiges Ultraweitwinkel-Zoomobjektiv mit konstanter maximaler Blendenöffnung von f/2.8 für die bestmögliche Bildqualität auch bei schlechten Lichtverhältnissen. Model Overview. A fast, ultra wide-angle zoom lens offering excellent optical performance throughout the zoom range. A constant f/2.8 maximum aperture make this an ideal lens for low-light photography. See full specs. Buy a used Canon EF 16-35mm f/2.8 L II USM, trade-in your own, or sell for cash, with MPB. EF 16-35mm f/2.8L III USM High-performance L-series ultra-wide-angle zoom lens with constant f/2.8 maximum aperture. All-new optical design for significant improvements in outer and corner sharpness. Subwavelength Coating (SWC) and Air Sphere Coating (ASC) help to significantly reduce flare and ghosting. 1U0FV.