The Sigma DP1s is an improved version of the Sigma DP1, and both cameras contain a the same processor, 14-megapixel FOVEON X3 direct image sensor and lens with a focal length of 16.6mm F4 (35mm equivalent focal length is 28mm). The new Sigma DP1s features enhancements to its user interface that mimic that of the DP2 and will provide photographers with improved user capabilities. The DP1s also offers enhanced performance when shooting backlit subjects to further enrich the images itcaptures with superb resolution and richly graduated tones with a life-like, three-dimensional feel. The DP1s is the latest addition to Sigma's DP line of high-definition, compact digital cameras