UPDATED. Two Sigma lenses previewed last fall now are in the distribution pipeline. This has just been confirmed by the Canadian distributor. They are the 17-70 mm f/2.8-4 DC MACRO OS HSM and 120-300mm F2.8 DG OS HSM.
The short zoom is 30 percent smaller than conventional models, and features two Low Dispersion (FLD) glass elements with performance equal to fluorite, and one Special Low Dispersion (SLD) glass element. The Sigma 17-70 mm f/2.8-4 DC MACRO OS HSM lens has a suggested retail price of $569.95 and will be available for Canon and Sigma in February and for Nikon in March; Pentax and Sony versions will follow.
The long zoom will include Sigma’s Optical Stabilization (OS) function, a Hyper Sonic Motor (HSM), and two FLD and one SLD glass elements. With a new dust- and splash-proof design, this lens will also have a focus limiter, which incorporates inner focusing and zooming that does not require a change to the length of the lens for focus and zoom. The Sigma 120-300 mm f/2.8 DG OS HSM lens has a suggested retail price of $3,999.95 and will be available in March for Canon and Sigma cameras; a Nikon version will follow in April.