As Schiller explained, when you're about to take an image with the new iPhone 11 Pro, the camera will snap 8 images before you press the shutter. When you do, it'll then take one long exposure, and then stitch a new image together, "pixel-by-pixel" to create one with lots of detail and very little noise.
It's not specifically designed for shooting in the dark, but it's clear that Apple is parking its tanks on Google's lawn. Night Sight has been one of the strengths of the last few Pixel phones, using machine learning to create well-lit images in dark environments.
Schiller didn't say when exactly we could expect Deep Fusion, but that it'll arrive on devices in the coming months. Given the looming announcement of the Pixel 4, it'll be very interesting to see if Google already has the next generation of its own technology ready to return fire.