Artificial light is any light source that is not natural, such as flash, strobe, or continuous light. Artificial light gives you more control and flexibility over the lighting conditions, but it also requires more equipment and skill. To use artificial light effectively, you need to understand the basic principles of exposure, color balance, and light modifiers. For example, you can use a flash to fill in the shadows or to freeze the motion, or you can use a strobe to create a powerful and dramatic effect. You also need to consider the shape, size, and distance of the light source, which can affect the softness, direction, and falloff of the light. For example, you can use a softbox to create a soft and flattering light, or you can use a snoot to create a narrow and focused light.