What's the same:
The iPhone X features a similar dual camera system to the iPhone 7 Plus and iPhone 8 Plus, but with a vertical orientation. The phone has a 12-megapixel camera, optical and 10X digital zoom, wide color capture, and Portrait Mode and Portrait Lighting.
The iPhone X has a f/1.8 aperture wide-angle lens like the iPhone 8 Plus, but a f/2.4 aperture telephoto lens, which means the iPhone X is slightly better equipped to take photos in conditions with low light. iPhone X photos will probably be brighter and all around better than those taken on the iPhone 8 Plus.
Unlike the iPhone 7 Plus and iPhone 8 Plus, the iPhone X will have dual optical image stabilization on both the wide-angle and telephoto lenses on the back, which means photos and videos will be smoother and less blurry.
What really sets iPhone X apart is its front-facing camera system Apple calls "TrueDepth," which is capable of facial mapping and will power Face ID, Apple's new method for unlocking your phone. The front-facing camera is also capable of taking Portrait Mode selfies.
The iPhone X starts at $999 and will be available for preorder on October 27.