Lighting for rendering

[Anonymous]

I am building a fly-through of a building starting outdoors and ending up inside. I have over 30 cameras in the path. I crash regularly.
Question: If I F5 an indoor camera to see how it looks, the ceiling panels aren't receiving light, so they look black. I am using the Lightworks Photo renderer and I have it set for sunlight, interior light and ambient light. How can I get enough light on the ceiling to have it show up white?
I have a great fly-through in the works, but it still needs tweaking. It takes over six hours to render it and that is only doing half of the cameras.

Thanks for your ideas.
Roger

[Dwight]

1: make an "undersun:"

Sun object:

no shadow casting
Set sun position manually
altitude -90.

[Anonymous]

Whereabouts do you put this "undersun"? In the room out of view of the camera?

Thank You for your time.
Roger

[Dwight]

anywhere. it is infinite.

I have a book if you want more Lightworks tricks.

[Anonymous]

I see that. I gotta ask the boss for the book. I will try to sweet-talk him into it.

Thank you for your time.
Roger