The Nikon F-mount Sigma 18-200mm f/3.5-6.3 DC Macro OS HSM is a Contemporary-series all-in-one zoom covering an impressively versatile range while maintaining an overall compact and lightweight profile. The optical design utilizes Four SLD and three aspherical elements to greatly reduce chromatic and spherical aberrations throughout the zoom range and a Super Multi-Layer Coating also helps to control lens flare and ghosting for high contrast and color accuracy. this lens also incorporates a Hyper Sonic Motor, which affords fast and precise autofocus performance along with full-time manual focus control. An Optical Stabilizer also benefits from creating sharp imagery by minimizing the appearance of camera shake. All-in-one zoom is designed for DX-format Nikon F-mount cameras and provides a 27-300mm equivalent focal length range. Three aspherical elements are used to help limit distortion and spherical aberrations and also contribute to greater overall sharpness and accurate rendering. Integrated HSM (Hyper Sonic Motor), along with a rear focus system, realizes quick and quiet autofocus, which is further complemented by an optimized AF algorithm to produce smoother focusing performance. The HSM also permits full-time manual focus control simply by rotating the focus ring at any time. The rounded seven-blade diaphragm contributes to a smooth and pleasing bokeh quality.
Sigma 18-200mm F/3.5-6.3 DC Macro OS HSM Cont... Specs