https://www.theverge.com/2018/10/25/18021944/google-night-sight-pixel-3-camera-samples

Google’s Pixel phones have already changed and improved smartphone photography dramatically, but the latest addition to them might be the biggest leap forward yet. Night Sight is the next evolution of Google’s computational photography, combining machine learning, clever algorithms, and up to four seconds of exposure to generate shockingly good low-light images. I’ve tried it ahead of its upcoming release, courtesy of a camera app tweak released by XDA Developers user cstark27, and the results are nothing short of amazing. Even in its pre-official state before Google is officially happy enough to ship it, this new night mode makes any Pixel phone that uses it the best low-light camera.

Let’s take a look at a few examples, shall we? All of the shots below are taken with the Pixel 3 XL: first with the default settings and second with the night mode toggled on. Google claims Night Sight will save you from ever having to use the flash again, and so naturally, I didn’t use it with any of these images.