Why does the black card camera flash have to be made to jump?

There are several main considerations for making black cards flash:

If the flash jumps, it will be farther away from the lens than if it is fixed on the fuselage, so that the close-range flash will not be affected by the protruding lens.

The appearance can maintain the integrity and unity of the black card, and there will be no sudden feeling.

If you don't use the flash at ordinary times, just press it, which is convenient to use.