Area without direct light coverage — created by shadow or sightline block. Gaffer fills with bounce or secondary source to prevent crush.
On set, a deadspot occurs when a specific area of the frame is not directly reached by any light—usually because another object or the geometry of the space blocks the light stream. This is not the same as a deliberately placed shadow. A deadspot is a dead area that you don't want to see because it makes the subject illegible or breaks the image architecture. The gaffer recognizes it during preparation and must eliminate it.
The most common causes: An actor stands behind a pillar that blocks the key light. A prop casts a hard shadow on the wall behind a figure. The camera position is such that one side of a face is completely in darkness—not as a dramatic stylistic device, but because the nearest available light source geometrically cannot reach it. The solution is almost always to place fill light or a reflector. A white bounce board, a small HMI at 2000K, a poly board—the tool depends on how much modulation you need and how close you can get to the subject. Some gaffers also resolve deadspots by shifting—light from the opposite side, overhead fill, even by strategically repositioning the camera.
In editing or color correction, a deadspot cannot be salvaged afterward without looking obvious. Therefore, prevention on set is critical. During pre-lighting, you specifically look into dark corners and angles. During rehearsal with the actors, you move around and check: Where does someone get visually stuck? Where is nothing happening? That is your deadspot. Then you light the fill so that it remains subtle—not obliterating and flat, but in a way that it only activates the dead area while preserving the shading. The difference between a professional look and beginner lighting is often just this one reflector that removes the deadspot.
A practical point: Not every dark area is a deadspot. Dramatic chiaroscuro with real hard shadows is intentional and has power. A deadspot, on the other hand, is unintentional emptiness—it destroys focus rather than strengthening it.