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This high performance lens is great for photography that frequently use the telephoto range such as portraits, sports photography and nature photography. It has a switch for changeover to macro photography at focal lengths between 200mm and 300mm with a maximum close-up magnification from 1:2.9 to 1:2. The SLD (Special Low Dispersion) glass in this lens provides excellent correction of chromatic aberration.

The new multi layer lens coating and lens design reduce flare and ghost, which is a common problem with digital cameras and also creates an optimum color balance through the entire zoom range.

This compact telephoto zoom lens was exclusively designed for digital SLR cameras featuring APS-C size image sensor. Featuring a Super Multi coating to cut down flare and ghosting, this lens has a focal length of 55-200mm making it suitable for normal to telephoto, like medium to small sized group photos and close-ups on objects far away.
The focus and zoom rings provide easy operation in manual mode while a distance scale on the focus ring is an easy to use and convenient addition.

This standard zoom lens is designed exclusively for digital SLR cameras and incorporates Sigma's original OS (Optical Stabiliser) function. This lens offers a large aperture of F2.8 at the 18mm focal length making it ideal for indoor photography and in low lighting conditions. Two SLD (Special Low Dispersion) glass elements and three aspherical lenses provide excellent correction for all types of aberrations. High image quality is assured throughout the entire zoom range. The incorporation of HSM (Hyper Sonic Motor) ensures a quiet and high speed AF. The Super Multi-Layer Coating reduces flare and ghosting and provides high contrast images.

The Sigma 50-200mm F4.5-6 DC OS HSM is a compact high-performance telephoto zoom lens that incorporates Sigma’s own Optical Stabilizer function. The lens incorporates SLD (Special Low Dispersion) glass in the front lens group and is equipped with an inner focusing system to provide high image quality throughout the entire zoom range. The incorporation of HSM (Hyper Sonic Motor) ensures quiet and high-speed auto focus. The OS (Optical Stabilizer) function effectively eliminates the effects of camera shake so subjects can be easily and clearly seen in the viewfinder as well as in the image. It allows the use of shutter speeds approximately 4 stops slower than normal for steady, handheld photography. For Sony and Pentax mounts he built-in OS System operates in conjunction with a camera body equipped with an anti-shake function and can be used as an alternative with cameras having built-in image stabilization. The Super Multi-Layer Coating reduces flare and ghosting and provides high contrast images throughout the entire zoom range. This lens has a minimum focusing distance of 110cm (43.3 inches) throughout the entire zoom range and a maximum magnification ratio is 1:4.5. An inner focusing system eliminates front lens rotation, making it suitable for use with circular polarizing filters.

This high zoom ratio lens is exclusively designed for digital SLR cameras and capable of covering a wide range of focal lengths from wide-angle to telephoto