Netflix has added HDR (high dynamic range) support to a handful of devices, including the iPhone 8, iPhone X and iPad Pro.
HDR gives the image a bigger difference between the light and dark parts, and adds more 'steps' in between for a smoother transition. This makes for a picture with more depth, and that looks more lifelike.
The full list of devices with HDR support for Netflix is: iPhone 8, iPhone 8 Plus, iPhone X, iPad Pro, LG G6, Sony Xperia XZ Premium, Sony Xperia XZ1, LG V30 and Samsung Galaxy Note 8.
In order to watch in HDR, you'll need a Netflix Premium plan, which costs £8.99 a month. This also lets you watch in 4K, a picture resolution with four times as many pixels as high definition.
The iPhone 8 and 8 Plus went on sale last Friday. The iPhone X will hit shop shelves on 3rd November.