Lighting

1. Back Light- Back lights illuminate the LCD from the side or back of the display panel and they are used in small displays to increase readability in low light conditions.

2. Fill Light-may be used to reduce the contrast of a scene and provide some illumination for the areas of the image that are in shadow.

3. Key Light- The purpose of the key light is to highlight the form and dimension of the subject.

4. Hair Light- A back light used to help you see the hair better and each piece separate. 

5.Color Temperature-The color temperature of a light source is the temperature of an ideal black-body radiator  that radiates light of comparable hue to that light source.