2. How does this affect you when you are lighting a scene? What do you need to keep in mind?
The inverse square law of light indicates that whenever a subject falls away from the light source by double the distance, only a quarter of the amount of light will reach the subject. Understanding the concept of of the inverse square law is critical when lighting to create a specific "light fall-off" look. For example, if the shot requires the light to fall off quickly onto a subject's face, it is better to keep the light source close. On the other hand, if the light should fall off less dramatically, the light source should be held far away. In order for the light to be far away, the entire crew including the camera operator must stand far away from the subject.
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