I am modeling a small room so it is hard to get a good overall view of it from within it so what I want to do is show the layout from above, however normally the only light coming in would be from the window not from the space where the ceiling would be. I need a plane that is invisible but still blocks light. I realize there are a couple workarounds like changing the exposure or making a rectangular light right by the window and turning off the sky light. I just want to know if there is a direct way to block the light.

