https://wccftech.com/how-iphone-11-pro-max-deep-fusion-works-in-ios-13-2/

Deep Fusion is Apple's computational photography mode, exclusive for iPhone 11 Pro and its Max variant. It uses artificial intelligence for pixel-by-pixel processing of photos in real-time, identifying subjects and scenery to improve details. This is possible thanks to the powerful new A13 Bionic chip and its Neural Engine. Here are details on how it works and how it is different than Smart HDR.

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