The dp2 Quattro is a strange looking camera. Its extra-wide design is quite unusual, but if Sigma's CEO is to believed, the 29-megapixel shooter will deliver superior image quality thanks to its unique sensor. The Quattro layers pixels in order to capture red, green and blue colors vertically -- there's no need for interpolation, resulting in sharper, more vibrant photos. The company claims that the dp2 can output an equivalent of 39 megapixels, based on tests that pit the chip against traditional sensors. The dp2 is expected to ship in early August for $999, including a fixed 30mm (45mm equivalent) f/2.8 lens. Pricing info for the dp1 and dp3, which come with permanently attached 19mm and 50mm lenses, respectively, is not yet available.