Barndoors are opaque moving panels attached to the sides of a light's opening. They are typically used in theatrical and film lighting for additional control over the shape of the light beam. This tutorial shows you how to use the Barndoor light filter and demonstrates various settings.
The Barndoor light filter introduces four barn door flaps. Each barn door flap has three parameters. The first two parameters position the two ends of the flap across the face of the light. The third parameter (Edge) controls the softness of the edge. This light filter can only be used with spot lights.