Flash is such a great tool for all photographers, indoors and out. While most of the imagery I shoot using flash is fairly close to the camera, there is occasionally a subject much further from the camera and flash where the light from the flash just does not get there.
Flashes all have a set range where they can send enough light for proper exposure, but due to the inverse square law, that light reaches a distance where the light falls off. Think or throwing a ball! For a while the ball travels at speed for a certain distance before beginning to drop as that speed slows down.
Keeping all this in mind is important when photographing. Just how far can the subject be before the light won’t reach? It varies on many factors such as how powerful the flash is. The more powerful the further light goes. A Canon 580EXII has a greater range than the