Quote - 3) Lighting - Use only spotlights for anything other than an outer-space shot. Infinite lights are terrible for realism, but they can add good atmosphere, so you have to balance your needs.

Outside scenes lit by the sun or moon should use an infinite light for obvious reasons (namely, in terms of the scene sunlight is infinite light). Lights from point sources (small bulbs, candles, etc) should use point lights if they are distinct light sources. If there's too many, you usually have to go for some other option.