DESC: This Nikon lens, designed for use exclusively with Nikon DX format digital SLRs, offers a broad 18-200mm focal range for use in a variety of situations (equivalent to a 27-300 lens in 35mm format). Two Extra-low Dispersion glass elements and three aspherical lens elements minimize chromatic aberration, astigmatism and other forms of distortion, while ensuring high resolution and contrast. This auto-focus lens incorporates Nikon's Silent Wave Motor for fast, quiet focusing from as close as 50cm from the subject through its entire focal range. It employs a seven-blade rounded diaphragm opening that achieves a natural blur for out-of-focus elements.