Selecting Create > New Distant Light allows you to create a new Distant Light in your scene. A Distant Light is a directional light that covers an entire scene, but has no real source position. The closest real-world example would be sunlight.
Distant Lights are the virtual equivalent of the sun. They put out parallel light rays across your entire scene. Thus, their location does not matter - translating a Distant Light will not affect your scene’s lighting. In this image, the light is located between the figure’s feet but still casts uniform illumination. Rotation does affect your scene’s lighting just as the sun’s angle in the sky affects lighting on the ground. The image below shows an example of a Distant Light shining down from the sphere's left side with shadows turned on.
Each Distant Light has the following default parameters, which you can adjust using the Parameters Tab:
The Distant Light has no additional parameters other than the default light parameters. The image below shows two examples of the intensity of a distant light.