Least expensive way of producing good looking shadows?
I was wondering what's the best set up to use if you want to create decent looking soft shadows? Nothing insanely detailed or realistic, just some basic shadows that look nice and won't take hours to render a single frame? Say I have a scene with a building and an exterior. I have a directional light coming from outside to simulate the sun, and then I have an area light inside to get some shadows, but when I render it out everything is just practically pitch black inside. So I tried adding an ambient light inside and turning the intensity down, but even with it turned down it just negates all the shadows, and if I tweak the ambient light enough to get some shadows, the shadows look incredibly grainy and just horrible.