Canon Speedlite 470EX-AI flash incorporates Auto Intelligent (AI) Bounce technology, it can automatically swiveling the flash head for ideal bounce angle to produce even, diffuse, and clean bounce flash results.
The AI. Bounce Full Auto mode automatically selects the optimum flash bounce angle. While the AI. Bounce Semi Auto mode automatically makes adjustments to retain a user-defined bounce angle whenever the camera is s moved or the shooting orientation is changed.