Traditional Culture Encyclopedia - Photography major - What is the focus? How to set it? How to use focus shooting?

What is the focus? How to set it? How to use focus shooting?

Focus tracking is to keep focusing after the focus is set, and always keep the focus in alignment.

The latter question depends on the equipment used. Generally speaking, the equipment has a focus tracking mode. Check the instructions.

Of course, the most important problem in taking photos or videos is that the subject is in focus.