Pre-PMA 2008: Four Thirds users far and wide will appreciate the wide angle and telephoto zooms today announced by Sigma. The company's popular 10-20mm F4-5.6 and 70-200 F2.8 lenses have been converted to fit Leica, Panasonic and Olympus DSLRs. Both lenses include Sigma's HSM hypersonic focusing motors. More information follows...