Key light - the primary light in an array of other lights that are used in a scene. The key light is very important and getting it in place sets the scene.
Key Light Definition and Examples
Key Light Definition and Examples
Definition: Natural light; Sunlight - Photokonnexion
Refraction definition (optics) - Photokonnexion
What is Key Light — Definition & Examples in Photo & Film
What is Key Light in Photography? - Color Experts International
What Is a Key Light? Our Complete Guide To Key Lights
Refraction definition (optics) - Photokonnexion
What Is a Key Light? Our Complete Guide To Key Lights