The world's first flash equipped with an AI (Auto Intelligent) bounce function*.
Comes with two modes. The AI. Bounce Full Auto mode automatically selects the optimum flash bounce angle, whereas the AI. Bounce Semi Auto mode automatically makes adjustments to retain a user-defined bounce angle whenever the camera is shifted. The large LCD screen and selection dial enables easy viewing and adjustment of settings. The flash is relatively powerful with a guide number of 47 that ensures a high degree of lighting to cover a wide range of subjects and distances. Capable of wireless communication with the camera and other Speedlites via optical transmission, it can be used for multiple flash photography.
* The "AI bounce function" is a function that automates bounce photography with the flash. There are two modes: "AI.B full auto", (*) and "AI.B semi auto".
* EOS cameras, as well as EOS 3000D, EOS 1500D, EOS 1300D, EOS M6, EOS M5, and EOS M3 sold up until 2014 1H do not support "AI.B full auto". As of February 2018.