From an article in ZDNET by Lance Whitney.
First, LiDAR helps the camera take sharper photos, especially in dark conditions. Second, the scanner taps into AR, or augmented reality, to combine the real world and the virtual world. With AR, your phone or tablet can act as a virtual tape measure, show you how new furniture would look in your home, scan and recreate 3D models, and place you into AR games.
Introduced in 2020, the LiDAR scanner is available on the iPhone 12 Pro and Pro Max, the iPhone 13 Pro and Pro Max, and the iPhone 14 Pro and Pro Max as well as the 2020, 2021, and 2022 11-inch iPad Pro and 12.9-inch iPad Pro models. Nestled among the rear cameras, the scanner can detect objects up to 5 meters, or 16.5 feet.
1. Take a photo in the dark
Snapping a sharp photo with your iPhone can be challenging, especially in low-light situations. Under those conditions, the LiDAR scanner detects the distance of your subject, allowing your camera to more quickly rev up the autofocus.
Apple claims that the LiDAR sensor helps the camera autofocus as much as six times faster, an advantage when you have to take the shot before it’s too late. No need to do anything special for this. Just aim your phone’s camera, and the LiDAR automatically kicks in if necessary.
2. Measure Distances
You need to measure a physical distance but don’t have a ruler or tape measure. No need to worry when you can use a virtual measure. Included with iOS/iPadOS and downloadable from the App Store, Apple’s free Measure app can determine the distance between any two points, display the dimensions of an object, and tell you if a surface is straight.
Open the Measure app on your device. To measure the distance between two points, position your phone so that the starting point is at the dot within the circle. Tap the plus icon, move your phone along the area you want to measure, and then tap the plus icon again. The distance appears on the screen.
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