The latest version, the Sigma DP1x, remains true to that objective and maintains its wide focal length lens, but reflects several upgrades from the initial introduction of the DP series back in 2008. Specifically, it now houses the "True II" image processing engine, the new AF algorithm provides high speed auto focusing, ensuring convenient shooting and the Power Save Mode lowers the battery consumption allowing for a greater number of pictures to be taken with a single battery charge. The new rear design makes the user interface easier to interpret and use with quick, easy button recognition as the addition of red buttons enables easier operation of the camera controls. The DP1x is accompanied by the latest RAW image processing software, Sigma Photo Pro 4.0 which has superior image processing algorithm and improved compatibility with multi core CPUs and provides better image processing speed and improved image quality. The incorporation of a new noise reduction algorithm reduces Chroma and Luminance noise when processing X3F files taken at ISO 400 or more. Focal Length 16.6mm F4 35mm equivalent to 28mm Specifications Format - FOVEON X3 Direct Image Sensor (CMOS) Image Sensor Size - 20.7 13.8mm (0.8 inch 0.5 inch) Number of Pixels - Effective Pixels 14.06MP (2,652 1,768 3 layers) Aspect Ratio - 3 - 2 Focal Length - 16.6mm F4 (35mm Equivalent Focal Length - 28mm) Lens Construction - 5 Groups 6 Elements Shooting Range - 30cm - infinity (Full Mode), 50cm - infinity Storage Media - SD/SDHC, MMC Recording Format - Exif2.21, DCF2.0, DPOF Recording Mode - Lossless compression RAW data (12-bit), JPEG (High, Wide, Medium, Low), Movie (AVI), Voice memo to still image (10 sec./30 sec.), Voice recording (WAV) File Size/Movie - QVGA 320 240 (30 FPS, Approximately 30 minutes is possible with a 1GB SD Card) ISO Sensitivity - up to 3200 Flash - Built-in Pop-up,