Sigma Corporation is pleased to announce the launch of the new 18-200 F3.5-6.3 DC OS lens.
11.1 high zoom ratio lens is designed exclusively for digital SLR cameras and incorporates Sigma’s original OS (Optical Stabilizer) technology.
This high ratio zoom lens  incorporates Sigma’s original OS (Optical Stabilizer) function and exclusively designed for digital SLR cameras.  It is perfectly suitable for low light conditions, indoors, at dusk and telephoto range.  SLD (Special Low Dispersion) glass and aspherical glass provide excellent correction for all types of aberrations.  This lens has a minimum focusing distance of 45cm (17.7”) throughout the entire zoom range and has a maximum magnification of 1:3.9.  The inner focusing system is suitable for using a petal-type lens hood supplied and also circular polarizing filters. Read the whole article here