http://www.the-digital-picture.com/Pres ... -Lens.aspx" onclick="window.open(this.href);return false;Ronkonkoma, NY, Jan. 9, 2012 – Sigma Corporation, a leading researcher, developer, manufacturer and service provider of some of the world's most impressive lines of lenses, cameras and flashes, is pleased to announce the Sigma APO Macro 180mm F2.8 EX DG OS HSM, the world’s first 180mm macro lens that offers a magnification ratio of 1:1 and a large maximum aperture of F2.8.
http://www.sigmaphoto.com/news/sigma-an ... macro-lens" onclick="window.open(this.href);return false;
http://www.sigmaphoto.com/shop/apo-macr ... nk=jan_m_2" onclick="window.open(this.href);return false;