remove all lights

Support Lighting and Rendering
1

Hi, i am just wandering. Lets take start up scene, and remove light. Why do i still see that cube in cycles render. It suposed to b black. Could u tell me how can i make it real?

Thx

2

In the World settings set background strength to zero

3

or enclose the scene in something like a sphere or cube.
also negative values for emission is fun to mess with (:

4

Thanks a lot.