The Sigma dp1 Quattro Digital Camera combines the 29MP Foveon X3 Direct Image Sensor with the TRUE III image processing engine to create high quality images with an equivalent resolution of 39 megapixels due to the unique sensor design. This method uses layers of pixels to capture the color data of the red, green, and blue spectrums vertically, requiring no interpolation. This results in a sharper image with better color gradations. With this technology is a 19mm lens that on an APS-C camera has an 35mm equivalent focal length of 28mm.

See recent price change history for the Sigma dp1 Quattro.