Sigma's DP series cameras are designed so as to provide the photographer full creative freedom and control within a compact digital camera. Thanks to its proprietary three-layered Foveon X3 direct image sensor, this 14.45 mega pixels camera creates photographs with a unique 3-D look along with the kind of clarity and sharpness you'd expect of a digital DSLR, something you might create with a much larger camera. The DP series cameras have been upgraded for easier operation and have now been unified so that using both is effortless. The DP2s, remains true to that objective and maintains its "True II" image processing engine and its standard lens focal length, but reflects several upgrades from the initial introduction of the DP series. Specifically, the AF algorithm provides high speed auto focusing, ensuring convenient shooting, the power save mode lowers the battery consumption allowing for a greater number of pictures to be taken with a single battery charge. The 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.