Important: You need a camera with sufficiently slow shutter speed :)With Dr.Light, you can draw beautiful pictures with your camera and Android.Before launching this app, you must set up your camera at a slow shutter speed. (Be sure your camera has a sufficiently slow shutter speed).Next, launch Dr.Light and explore its simple, intuitive menu. Type your text, and choose your text color, two background colors, and toggle the background animation and third background. After you select Launch, Dr.Light will display a narrow line in the middle of screen that matches your specifications. When you shoot this image with your camera, Dr.Light’s magic will appear in your photos.Follow me on Twitter : https://twitter.com/navid_/Light painting app!Details of permissions used in Dr.Light: