Reduce Ambient Light to increase contrast in rendered images and animations. Stop light, or at least slow it down Lights cast shadows in 3D Studio VIZ 2.0 unless you tell them not to. To do this, select the light, choose Modify, then turn off the Cast Shadows check box. If you turn off a light s shadows, the light goes on forever, passing through objects that gets in its way to illuminate other objects in the scene. Even when you enable shadow-casting, lights don t fade over distance unless you tell them to.
Attenuation parameters specify how light fades over distance.
Select Inverse Square to fade lights. This dramatically increases the number of lights you need to illuminate the scene. Select the Inverse Square radio button to make light fall off at the rate it does in the real world. An object four units away from the light source receives one-sixteenth the amount of light it would receive from one unit away. This option may require you to create more lights than if you used another attenuation option.