Sigma - 12 mm to 24 mm - f/22 - f/5.6 - Wide Angle Zoom Lens for Nikon F

Sigma's new 12-24mm F4.5-5.6 II DG HSM is an update to the 12-24mm F4.5-5.6 EX DG ASP HSM, which has been a photographer favorite since it was first introduced in 2002. Revisions to the lens include the inclusion of one Special Low Dispersion (SLD) glass element and four of the company's new \"F\" Low Dispersion FLD glass elements to compensate for color aberration and provide high imagequality. FLD glass is the highest level, low dispersion glass available with extremely high light transmission and performance equal to fluorite glass. The new 12-24mm contains three glass mold elements and one hybrid aspherical ...