The most important new feature is the new camera system. Here, more than anywhere else, Samsung is trying to leap ahead of the competition by using a new kind of technology for Smartphone cameras.
The S20 Ultra has five cameras, if you count the depth sensor on the back. Most of them feature very high megapixel counts: 40 on the selfie camera, 48 on the telephoto, and a whopping 108 megapixels on the main wide-angle camera. The ultra wide camera is the only one with a more traditional 12-megapixel sensor.
Source:Samsung