The Sigma 18-200mm f/3.5-6.3 DC was introduced in February 2005. The Sigma 18-200mm is lighter and smaller than its predecessors. However, it still upholds Sigma's reputation for exceptional image quality and high performance. The 18-200mm DC feature is specifically for APS-C sensors. Sigma 18-200mm has 15 elements in 13 groups lens construction, 45cm minimum focusing distance, an impressive 18-200 focal length resulting in a maximum magnification of 1:4.4 at 200mm, and 11x zoom.
***Not compatible with 35mm film or full-frame SLRs.