About the full screen of photography

Hello, the default130000 pixels is 4: 3, which is different from the screen aspect ratio of 16: 9, so it is not a full screen. This is the default ratio. You can also turn on the camera, click the settings in the upper left corner (icon like a gear), and then click the resolution, and set it to100000 pixels, which is the same as the aspect ratio of the screen.