How did the weightlessness effect come out in the movie Gravity?

1 light box: a light box that provides a real background for actors. It looks like a hollow box, about 6 meters high and 3 meters wide. The interior wall consists of 196 LED panels, each panel is 0.6× 0.6m in size, and each panel is equipped with 4096 LED lights. Kind of like a cube kaleidoscope. The brightness and color of the LED lights in the light box are controlled by the computer, which is used to assist the camera lighting. Of course, the panel can display pictures of space and the inner cabin of the spacecraft. When performing in a light box, actors don't have to face the green screen to imagine the picture, but they feel more immersive.

2 iris system: made by bot&; IRIS system, a dynamic photography equipment provided by Dolly Company, has seven free axes, the highest tracking shooting speed is 10.8m, the moving speed is 4m per second, and the accurate static distance is 0.08mm The actor is fixed on a shelf, iris controls the movement of the camera, creating the illusion that the actor rolls in space.

Besides these two weapons, there is another technology that can create zero gravity effect. In some shots, sandra bullock will be suspended from a device and then manipulated like a puppet to create a zero-gravity effect.