Lighting.

There are different lighting techniques used throughout filming, for the purpose of creating different effects, suiting to the genre of the film. The different types of lighting are:

-Key Lighting: main light on the subject, this is the brightest light.

-Filler lights: shadows the key light and softens the image.

-Under lighting: when the main source of light comes from below the subject, mainly used in horrors.
-Top lighting: when the main source of light comes from above the subject, highlighting features to create a glamorous and flattering look in a star.
-Back lighting: counters the key light, adds depth of field. Makes the subject look more rounded. Creates silhouettes, the main light source is behind the subject.
-Low key lighting: using only the key and backlights, a sharp contrast of light and dark is created, forming deep shadows.
-High key lighting: more filler lights are used to create a bright, daylight effect. Lighting appears more realistic.