Why don't professional filmmakers shake their hands?

Did you see it when you were filming, or was it a feeling when you were watching a movie?

There are many ways to manipulate the focal plane, such as pushing, pulling, shaking and lifting, all with the help of tools, right?

If you have to hold the machine sometimes, it must be that the photographer has excellent skills to remain stable.

If you drag bricks for three minutes every day, you can do it in two or three months.