lenses
PMA 2009: Sigma Unveils 5 New Lenses
By Pete Miller - Published March 5th 2009 - 18:29
The Sigma Corporation has announced five new lenses at this year's Photo Marketing Association expo in Las Vegas. The lenses include the Sigma 10-20mm F3.5 EX DC HSM, Sigma 18-50mm F2.8-4.5 DC OS HSM, Sigma 50-200mm F4-5.6 DC OS HSM, Sigma 18-250mm F3.5-6.3 DC OS HSM and the 24-70mm F2.8 EX DG HSM.

| Retailers offering Sigma 10-20mm F3.5 EX DC HSM |
| Amazon (not yet available) |
| Adorama (not yet available) |
| B&H (not yet available) |
| Calumet (not yet available) |
The Sigma 10-20mm F3.5 EX DC HSM is a super wide-angle lens that has an aperture of F3.5 throughout the entire zoom range. The wide-angle lens provides a 102.4 degree view. The lens has two ELD (Extraordinary Low Dispersion) glass elements and a SLD (Special Low Dispersion) glass element that correct color aberration. Four aspherical lenses provide correction for distortion and allow