Night mode is an automatic setting which takes advantage of the new wide-angle camera that's in the iPhone 11 and 11 Pro models. It's equipped with a larger sensor that is able to let in more light, allowing for brighter photos when the light is low.
macOS Catalina Now Available
Apple Releases macOS Mojave 10.14.5 Boot Camp Update to Address iMac and Mac Mini Bug
The new software can be downloaded from Apple's support document accompanying the update.
The software update is available for iMac and Mac mini users, and won't be available to those who have other Mac machines.
Boot Camp is designed to allow Mac users to set up a partition to run Windows, providing access to PC-only apps and content.
Apple's Boot Camp update for macOS 10.14.5 comes about a month after the release of the macOS Mojave 10.14.5 update.