Utilizing in-lens image stabilizers, the Sigma 18-250mm f/3.5-6.3 Zoom Lens is an all-in-one solution for photographers desiring a single lens for their digital Nikon SLR camera. A superzoom lens such as this one is prone to a great deal of image degradation, but Sigma compensates for this effect by incorporating four Special Low Dispersion glass elements, super multi-layer coating, and three aspherical lens elements into the lens design. Additionally, the lens possesses inner-focusing that facilitates the use of a hood or polarizer on the front of the lens barrel without having to compensate for rotation. ? Hybrid Optical Stabilizer provides anti-shake function ? Minimum focusing distance of 17.7inch (45cm)