Shadows, Inside vs. Outside

Inside of a room it is clear that the lighting is coming from a specific direction, with obvious shadows.  This being the case one would need to take into account the lighter and darker areas of the room when deciding were a shot takes place.  Because inside lighting tends to be much darker than out side lighting, a lighting system would be needed to assure that the actors are properly lit in front of the camera.  Also the lighting inside of a room would tend to be much more controllable than the lighting given off outside, being that you can choose your primary light sources.

The light outside tends to give off a diverse set of shadows.  Mid day the setting will seem to be fully lit with little to no shadows.  While moving on into the later hours of the day the light will always be coming from the east.  In this case the shadow will generally be much more obvious.  Moving on into the night distant objects tend to be seen as silhouettes.  During the day almost everything is fully lit, and the excess lights that are needed might not be as extreme as the ones needed for indoor filmmaking.