Sigma is a Japanese based family owned manufacturer of DSLR cameras, camera lenses and camera DP1 QUATTRO FIRMWARE VERSION. SIGMA DP1x is the world's first and only high end compact digital camera that implements all the power of a digital SLR. The DP1x sticks to the principle. Feb 20, 2010 Sigma DP1x review, find out how the DP1x stacks up against the competition in our real-world review with in-depth image quality comparisons.
SIGMA GLOBAL VISION About SIGMA. Craftsmanship; Inside story; Core technology; Archive; Cameras. sd Quattro; dp Quattro; Lenses Art. 18-35mm Product Description. The latest version, the Sigma DP1x, remains true to that objective and maintains its wide focal length lens, but reflects several upgrades. SIGMA DP1 firmware is available for download here. It enhances the camera performance and reliability.