The overall light settings of the drawing can be set in the Global lights tab of the Light Settings dialog. They can also be set in Photo Lab.
There are six possible types of light settings you can use: Simple, Multiple suns, Two spotlights, Sun for natural light, Office lighting, Kitchen lighting, and Natural kitchen lighting. The extensions you have installed will determine which options you will see.
The Simple setting is the quickest way to render but adds a bright sun to the rendering, creating a harsh shadow. The Sunlight setting can be lowered and other lighting can be added for a better result.
The Multiple suns preset creates a diffused lighting effect.
- Pitched: 3 point lights at about eye level to add light to the vertical surfaces. These lights do not cast shadows. You can change their positioning by using the Direction and Pitch by dragging the blue button inside of the circle.
- Uplight: This will light the ceiling and the bottom of all horizontal surfaces. It does not create shadows.
The Office Lighting setting is designed to be used with office furniture. The tool adds two invisible spotlights, creating a soft, diffused shadow. Rendering using Office Lighting is much slower than the Simple or Multiple suns setting.
The option Enable realtime lights means that lights and shadows update themselves instantly as you work and move objects in the drawing area.
To see the effect immediately check the Enable realtime lights button in the 3D component tab.
You can also find Enable realtime lights in the Control Panel, Photo Lab, or the Lights extension.