Sigma has announced the release of the SD15, after several delays. The SD15 is the fourth D-SLR built entirely by Sigma. The earlier models released, since October 2002, include the SD9, SD10 and SD14 respectively.
The camera sports a Foveon X3 sensor, which as per Sigma claim ‘can capture all primary RGB colours at each and every pixel location arranged in three layers. It also features the True II image processing engine. The D-SLR features a 77-segment AE sensor, which allows for exposure accuracy using new AE algorithms. The D-SLR has a sensitivity of ISO100 to ISO1600, which can be extended to ISO50 and ISO3200. The SD15 will be able to use five new lenses, which Sigma has unveiled, and it includes the 70-200mm f/2.8 EX DG OS HSM, the 50-500mm f/5-6.3 DG OS HSM and the 17-50mm f/2.8 EX DC OS HSM.