Lighting Basics, Part 5

Lighting Effects

Cold / Warm
You can add to the feeling of coldness or warmth by using additional filters or doubling up on gels. Very blue means very cold, very red/orange means very hot.
Moonlight (or any night-time light)
This is an old standard technique which has become something of a cliché. You can make daytime seem like night by lowering the exposure slightly and adding a blue filter to the camera. However a convincing illusion may require more effort than this — you don't want any daytime giveaways such as birds flying through shot. You also need to think about any other lighting which should appear in shot, such as house or street lights.

Firelight
To light a person's face as if they were looking at a fire, try this: Point a redhead with orange gel away from the subject at a large reflector which reflects the light back at the subject. Shake the reflector to simulate firelight (remember to add sound effects as well).

Watching TV
To light a person's face as if they were watching TV, shine a blue light at the subject and wave a piece of cloth or paper in front of the light to simulate flickering.

Source: http://www.mediacollege.com/lighting/effects/

Tips for Lighting People

Harsh light is not flattering; soft light creates a warmer feel.
Avoid strong nose shadows or any strong contrast on the face. Place the key light on the same side as the camera and fill the shadows.
Avoid reflections from glasses. You may need to adjust the position of the subject and/or lights to do this.
Beware bald heads — they can reflect a lot of light and appear over-exposed. Try weakening or softening the light with a diffusion gel.
Soft light and diffusion helps reduce the appearance of wrinkles.

Source: http://www.mediacollege.com/lighting/tips/people.html