Creating Free Lights
Adding a free spotlight or free directional light to your scene is just like adding a free camera. Free lights are great when you need a lot of light pointing in the same direction, like a row of street lights or lights in an office building.
To create a free spotlight or free directional light:
Open a scene file.
Click Free Spot on the Lights & Cameras Toolbar.
Click Free Directional on the Lights & Cameras Toolbar.
Click in the Top viewport to place the light (Figure 12).
Figure 12 Add a free light in the Top viewport to have it point straight down.
The light is added, and the default lights are overridden.
Move the light into the desired position.
Render the scene (Figure 13).
Figure 13 Illuminating a scene from the top yields stark lighting.
Since the light is pointing straight down into the scene, it illuminates a perfectly circular area.