The two German cameras; High Resolution Stereo Camera (HRSC) and Wide Angle Optoelectronic Stereo Scanner (WAOSS) will be flown on the Russian Mars missions. The paper gives an overview of the scientific objectives of the camera experiments and the basic instrument design parameters. The operational concept and the expected data products are shortly presented for the actual Mars mission scenario. The camera experiments consist of the flight hardware and the ground segment including experiment operations and data acquisition, processing and management.