The Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM Nikon is a wide-angle lens with zoom feature. The lens has image stabilization with which you can use longer shutter speeds of up to four stops. The Sigma 18-250mm is resistant to temperature changes, because the lens was made of Thermally Stable Composite material. In addition to a Special Low Dispersion lens element, the Sigma 18-250mm also has three aspheric lens elements. This prevents chromatic aberrations, which are lens errors that cause your photos to have color edges.