Artistic principle of light and shadow graffiti

This artistic expression appeared quietly in 2008. Driven by art lovers and photographers, this artistic expression form

Since 2009, art has gradually become a popular street and fashionable art activity.

The principle is to adjust the shutter of the camera very slowly, then wave the shape with a luminous body, and then the camera records the movement track of the light spot, which is what you see.

Take a photo with the camera (shutter is open or not) and move it on the screen with a laser pointer similar to the "infrared" we often play. The camera records the motion track of the reflection point, closes the lens after completion, and then finishes after PS.