What is the focus of photography?

It is the subject (people, buildings) that you want to shoot. . . . . ) clear.

Generally, cameras have two modes: auto focus and manual focus.

Auto focus means that the camera detects the distance and focuses. All you have to do is aim the camera at the object to be photographed, and then press the shutter halfway, and the camera will automatically focus.

Manual focusing is more troublesome. Professional shooting depends on measuring the distance and then adjusting the focus ring to the corresponding parameters.

Don't measure the distance, you can only rely on your eyes.