Reflections & extra lights
Environment reflections
Scenes are always wrapped in an environment map, so metal and glass materials read correctly out of the box — there is nothing to switch on. Reflective surfaces pick up the surrounding light automatically.
Additional light sources
The sun lights every scene by default. Turn on additional light sources when you want to add your own lights on top — directional, point or spot — for rim light, fills and accents. Turn it off again and your scene falls back to just the sun, with your extra lights kept safe for later.