A mobile stage lighting system configured to be positioned on a film stage and cast soft light upon subjects and objects on stage. The lighting system includes a light frame having a plurality of light sources positioned within the frame. A mobile support is positioned below the frame and enables the frame to be moved. A diffusion film is disposed in front of the plurality of light sources and an eggcrate louver is positioned adjacent the diffusion film. Panels having light-reflective inner surfaces cover the back and sides of the diffusion frame. A light control system regulates electrical power to the plurality of light sources, such that an illumination intensity of individual ones of the plurality of light sources can be varied.