One or more lights can be used, which can be ambient, distant (sun), cone, point, projector, area, custom, line, environment, and atmospheric lights. Lights may appear to glow in images, simulating the reflection of lights off dust particles in the air. Environment and atmospheric lights are advanced lights, which are especially optimized for global illumination. Other light types produce soft (mapped) or hard (raytraced) shadows.
Cubic and spherical environment mapping, bumps, backgrounds that include alpha channel support, depth effects, and post processing effects can be applied. Blur is an example of a post processing effect that simulates focusing your camera to a particular area of your modeling scene. Sky backgrounds that are procedurally generated come close to real skies that you may have captured with your camera.