Lens and camera maker Sigma has announced the existence of two new cameras hinted at earlier in the year, the SD15 and the DP2. The former is a DSLR, and a successor to the SD14, which originally premiered two years ago. The 15 makes use of a 14-megapixel Foveon X3 sensor, and a new image processing engine, TRUE II. Few other details available, though Sigma says it will have a three-inch LCD.