ARRI's cinematography tools preserve the shutter-angle concept in digital workflows because it conveniently expresses exposure time relative to frame duration. A 180-degree shutter exposes for roughly half of each frame interval.
This article was developed from ARRI cinematography guidance and cross-checked against Academy filmmaking education and professional cinema/cinematography documentation where applicable. Technical standards can evolve, so delivery specifications should always be checked against the current production or exhibition requirement.