Ultra high resolution from an amazingly high performance camera the first camera to feature the newly developed aps h size foveon x3 quattro direct image sensormdashwith incredible 51 megapixel equivalent resolution the sd quattro is a highly unique aps h sensor mirrorless camera designed with the foveon quattro sensor this sensor is renowned for its incredible image quality and color fidelity and produces imagery comparable to that of a 51mp dslr with a bayer pattern sensor its new physi