Apple’s Deep Fusion computational photography system is available in the latest iOS 13 public beta.
Available to developers, the iOS 13.2 bring the new camera functionality to the new iPhone 11 and 11 Pro.
Deep Fusion is designed to use artificial intelligence and other software tricks to improve the sharpness of images by capturing frames of differing exposures and merging them on its own. It’s supposed to only work for medium to low light scenes, whereas Smart HDR and Night mode handle extremely bright and extremely dark scenes, respectively.
The feature is not listed anywhere in your iPhone's camera app, but it works in the background, according to Apple.