MTF ChartOptical DesignProfessional telephoto lens with a fast f/2 aperture designed for use with Nikon�s FX-format SLRs. Incorporates Nikon\'s second-generation Vibration Reduction system for an exceptionally steady image, even in low-light. Nano Crystal coat greatly reduces ghosting and flare and the 9-blade rounded diaphragm enables super-smooth bokeh. Boasts quiet, accurate autofocus and a weather-sealed magnesium body. Fast 200mm lens with a maximum aperture of f/2 Vibration Reduction (VR II) provides the equivalent of a shutter speed approximately 3.0* stops faster; two modes are available - Normal and Active Nano Crystal Coat virtually eliminates internal lens element reflections to effectively reduce ghost and flare Three ED glass and one Super ED glass elements are used for effective lens aberration correction Three focus modes are available - A/M, M/A and M Sample Image