Pro-democracy protesters in Hong Kong have been using laser pointers to distract police officers and confuse facial recognition cameras. But while they are beating facial recognition, they are also causing more serious problems for police officers and photographers covering the protests. The laser beams have caused eye damage to several people so far, and they have been frying camera sensors as well.
Light painting is typically done one of two ways. Either you have a flashlight and wave it around your scene from behind the camera to light up your subject over time or you have the light source actually in the scene and you’re creating a long exposure of its movements. But there are many light sources besides flashlights that you can use for light painting. In this video from COOPH, we take a look at five ways to paint with light.
It’s not a secret that things like lasers and lidar can kill camera sensors. You get an intense beam of light pointed towards your camera, and then the lens focuses it into an even brighter point, frying pixels. But did you know that diffused reflected laser light can also cause this to happen?
Photographer Andy Boyd knows. He had to learn the hard way after filming a laser tattoo removal which very quickly and easily fried a bunch of pixels on the sensor of his Sony A7SII in a series of rapid laser bursts.
If internet anecdotes are anything to go by, laser pointers are good for nothing more than endlessly teasing your cat. But, as this video shows, it appears that isn’t the case.