Light painting is the process of using long camera exposures to create stunning lighting effects.By having a camera's shutter open for extended periods of time, often well over a minute, trails of light can be drawn with LEDs, flashlights, or even sparklers.Light painting, also known as light drawing or light graffiti, can produce some truly stunning results but don't be fooled, it isn't as simple as just waving a little light in front of a lens.