An essential part of creating a scene is to set the lighting properly, because different lighting conditions can produce totally different results. In AutoCAD, there are different types of light sources, and you can add one or multiple light sources of these different types to the model to set the lighting as desired. In this section, we will start by learning how to set the lighting intensity units in AutoCAD, and then we will explore the different light sources that are available in AutoCAD. Each type will be covered in a dedicated sub-section. We will learn how to create and properly adjust their settings, and we will look at the differences between them. Let's now begin with adjusting the lighting intensity units.