The Satge Key Light
If there is one thing that you’ll find in almost every lighting design, it’s the key light. In most cases, the key light is the brightest light in a classic three-part setup and is the primary front light for the production.
Typically, it’s the key light that mainly illuminates a scene’s main focus. This can be a performer, prop, or set-piece, depending on the scene’s goals.
A key light isn’t necessarily pointing directly at the main focus, however. It can be set at an angle, both laterally and vertically. That way, it can create strategic shadows or maintain a position that’s more versatile for that scene or scenes that occur later in the production.
In many ways, the key light also sets the tone for the scene. The effects you apply to the fixture, the lighting temperature, and the amount of illumination all lead to a vibe, one that other lights will typically support.