Starting with the 30mm f/2.8-equipped Sigma dp2 Quattro, this new 'dp'-series camera sports a brand new Foveon X3 Quattro APS-C image sensor. Still constructed around a three-layered RGB sensor ...

The Sigma dp series of cameras sporting Foveon sensors ... [Note that the above print quality analysis was made using in-camera JPEGs, but we also printed Sigma Photo Pro 6.0.6 RAW conversions ...