Successor to Sigma’s earlier, slower 180mm F3.5 EX DG macro lens, the new APO Macro 180mm F2.8 EX DG OS HSM is billed as the world’s first 180mm f/2.8 macro lens with a 1:1 reproduction ratio. In addition to the faster maximum aperture, the new lens also offers optical image stabilisation and a quiet “hypersonic” AF motor. Three “F” Low Dispersion (FLD) glass elements, which have a performance equal to fluorite glass, are included to provide correction for colour aberrations, while the Super Multi-Layer Coating is claimed to reduce flare and ghosting. The Sigma APO Macro 180mm F2.8 EX DG OS HSM lens has a rounded nine-blade diaphragm to create an attractive blur to the image’s out-of-focus areas. Note that unlike the two other Sigma lenses announced today, this is a “traditional” SLR lens. Pricing and availability to be confirmed.
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