A fast f/5.6 constant aperture gives your shots beautifully out-of-focus backgrounds across the entire zoom range. Turn fast-moving action into dazzling photo sequences—the electromagnetic diaphragm operates in sync for the fastest subjects and shutter speeds while Vibration Reduction image stabilization keeps your shots sharp and steady. and in the rare cases when additional reach is needed, you can increase the AF-S NIKKOR 200-500mm f/5.6E ED VR's zoom power with an optional Nikon 1.4x, 1.7x or 2x teleconverter.