Sigma presented its 55-200mm F4-5.6 DC HSM lens. It comfortably adjusts to the quality of the digital camera after considering the power arrangement of its lens for high picture quality. The Small size light weight conversion actualized; compact telephoto zoom lens has a filter of size 55mm, largest diameter 71.5mm with a total length 87.1mm and weight 310g. With high optical efficiency it lightens the flare and the ghost which especially are easy to occur with the digital single-lens reflex camera, actualizing optimum color balance. As for shortest photographing distance at zoom all as for 110cm and maximum photographing magnification ratio, 1:4.5 it can be easily utilized wide area photography.