 This can be useful in Steadicam and remote crane applications where visibility outside the sensor capture area is preferable.Like Arri mechanical cameras, the D-20 is modularly constructed so that both the mechanical and electronic components are upgradable over time, the camera however was discontinued in 2008 and the D-21 was introduced.Other single-chip Super 35 mm film-sized digital motion picture cameras directly in competition with the D-20 include the Panavision Genesis camera, the Sony F35 camera and the Red One camera.