ABSTRACT
This chapter discusses the importance of light and vision. It examines many of the ways in which light can be used to shape a viewer's perception of the world around them. The chapter begins with a look at the eye and how it functions, then moves into discussions of several fundamental principles of composition and visibility, and how light can affect our perception in both positive and negative ways. Since light is the primary means by which we sense an environment, it is through its revelation of composition that we can comprehend a space. Without light, our perception of an environment is severely impaired. An object's color is often perceived differently when viewed under light sources of different intensities and colors. Front light is popular because it reveals details of a subject. Most designers associate front light with visibility. Movement refers to changes within the light and composition from moment to moment.
