The jitter of movie pictures is a style.

1, deliberately create a documentary or documentary feeling, more sense of substitution, such as "Death Video", which is called mockumentary.

2. Deliberately create the effect of panic or confusion and anxiety.

3. In addition to the obvious shaking of the lens to deliberately increase the tension, there will always be a lens effect that makes people feel slightly shaking intentionally or unintentionally, and some are really slightly shaking, which makes people wonder and observe whether the lens is shaking or just the photographer is capturing the picture.