Photo or film reference for tone, composition, mood — DP and director consult it before and during shoot. Saves time, builds visual consensus.
Before the first clap, photos, paintings, sometimes even individual frames from other films lie on the conference table — the visual reference. It is not the storyboard and not the concept art. It is the answer to the uncomfortable question: "What should this look like?" Instead of remaining vague, you show it. A cinematographer and director speak the same visual language only when both have the same image in mind.
In practice, it works like this: During preparation, you look at a series of photos — perhaps shots by Roger Deakins or Nadine Lupo, perhaps even classics like Caravaggio paintings. Not to copy them, but to understand the lighting, the color palette, the depth of field strategy. You note: "Harsh side lighting, lots of black in the background, faces in shadow-light transition." This does not replace a technical discussion, but it prevents misunderstandings. If your director later tells you "This looks too soft," you immediately know that you need to return to the visual reference — not to your memory.
This saves time on set that would otherwise be spent on clarification discussions. The initial lighting is then not a product of chance, but calculated. I also use visual references for image composition: Where is the character positioned in the frame? How close or far? What depth of field do we need? With a clear visual reference, you avoid the classic situation where, after the first take, the director says: "This is not what I imagined."
Important: Visual references are not a prison. They set a direction, not an absolute rule. The context on location — existing light, available locations, budget — always changes the concrete execution. But the essence remains. A good visual reference is like a compass: It shows the direction, not the exact path. With experience, you develop an eye for navigating quickly between reference and reality without betraying the original idea.