On Tuesday at the PMA expo, Sigma has demonstrated the DP2 digital camera, a successor to the DP1. First seen back in September, the DP2 shares its 14-megapixel FOVEON X3 image sensor with the company's digital SLR, the SD14, which is much larger than the sensor in other digital cameras. Touted as a compact digital camera with most of the functionality of a DSLR, the DP2 also has an ISO sensitivit
