Sigma says added optical stabilization to its 50-150mm zoom lens allows for shutter speeds 4 stops slower than previously.
The lens, the 35mm equivalent of 75-225, has a an F2.8 maximum aperture, with 21 elements in 15 groups.
Sigma also announced a minor update to its previous DP2s compact camera. The DP2x adds a new analog front end and improved autofocus. It has the same fixed 24.2mm F2.8 lens, 14 megapixel Foveon X3 (5MP effective) and body design of its predecessor.