There are many lighting terms in film making, all of these are needed to make a clear movie scene. The first lighting term is
Key lighting:
The key light is possibly the most important light in a scene, the key light is used to highlight the form and dimension of the subject.
Back light:
Back light is the source of light is behind the object or character
Fill light:
A fill light is the light, usually from the side of the subject that can soften shadows and illuminate areas not covered by the key light.
This is a diagram of the three point lighting.
