I keep a lighting journal. Every shoot, before I break down the set, I sketch the diagram, note the modifier, the distance, the ratio, the color temperature. I have over a decade of these notebooks stacked on a shelf in my studio, and when I flip back through them, one thing stands out: almost every successful portrait I have ever lit traces back to one of five foundational patterns. Not variations. Not creative departures. The same five configurations, dialed in tighter each time I used them.

If you are still treating lighting patterns as theory, something you read about and sort of remember, that is the problem. These are not concepts. They are repeatable recipes, and like any recipe, they only become useful once you know them well enough to execute them without thinking.

What a Lighting Pattern Actually Is and Why the Terminology Matters

A lighting pattern describes where the shadows fall on a face, which is determined by the position of your key light relative to your subject. That is the whole definition. The reason the specific names matter is not academic. It is because once you can identify a pattern in any photograph, you can reverse-engineer the setup. I once recreated a specific lighting look from a magazine tear-out using nothing but the shadow shapes as my guide, and it worked almost exactly. Knowing the vocabulary means you can speak in shorthand with clients, assistants, and other photographers without losing twenty minutes of setup time.

The five patterns are: Rembrandt, Loop, Butterfly, Split, and Broad. Each produces a different emotional register and flatters different face structures differently.

Loop and Butterfly: The Two You Will Use Most

Loop lighting is your workhorse. The key light sits slightly above eye level and roughly 30 to 45 degrees to the side of the subject’s face. The nose shadow drops at a downward angle and loops toward, but does not connect with, the corner of the mouth. It is universally flattering, works across a wide range of face shapes, and reads as natural to most viewers. For this pattern, I typically run my key light at a 3:1 ratio against my fill. That means my key produces roughly 1.5 stops more light than the fill side. Metered at the subject, I might set my key at f/8 and my fill at f/5.6. For most editorial and corporate work, that ratio gives you dimension without drama.

Butterfly lighting, sometimes called Paramount or glamour lighting, places the key light directly in front of the subject and high, angled down to produce a shadow that falls beneath the nose, shaped like a butterfly’s wings. This pattern emphasizes cheekbones and compresses the width of the face. Beauty and fashion clients ask for this constantly. I use a 60-inch parabolic umbrella for butterfly work when I want that classic, even wrap. For tighter beauty shots, I switch to a 24-inch beauty dish with a diffusion sock. The dish at roughly 18 to 24 inches from the face produces a harder falloff at the edges and a more dimensional look.

Rembrandt and Split: When You Want Weight and Mood

Rembrandt lighting is named for the triangle of light it creates on the shadow-side cheek. The key light sits at 45 degrees to the side and roughly 45 degrees above eye level. The shadow from the nose reaches down and merges with the cheek shadow, isolating that small triangle of highlighted skin. It is a heavier, moodier pattern. I use it for executive portraits where the client wants authority, and occasionally for dramatic editorial work. A standard 5:1 ratio, about 2.3 stops difference between key and fill, is where I start. Less fill than that and you are almost in film noir territory.

Split lighting places the key at 90 degrees to the face, cutting it cleanly in half. One side is fully lit, one side is in shadow. Most clients find it too severe for anything commercial, and honestly, they are right for most contexts. But for certain fashion concepts or male grooming campaigns, it is exactly what the image needs. When I use split, I typically use no fill at all and let the shadow side go completely dark. A single bare strobe or a gridded strip box about 3 feet from the face does the job.

Broad vs. Short: The Modifier That Changes Everything

Broad and short lighting are not separate patterns in themselves. They describe which side of the face, the side turned toward the camera or the side turned away, receives the key light. Broad lighting illuminates the larger plane of the face visible to the camera, which widens a narrow face. Short lighting illuminates the smaller, receding plane, which slims a wider face. I run short lighting by default on most subjects and adjust from there.

My wife pointed something out years ago that no course ever taught me. She mentioned that she could feel the difference between a photographer who understood where light was catching her skin and one who was just guessing. That stayed with me. The patterns matter because faces are not flat. The cheekbone, the brow ridge, the jaw, each one intercepts light at a different angle, and understanding the geometry of that interception is what separates a lit portrait from a photographed face.

Setting Up Your First Controlled Test

If you want to own these patterns rather than just recognize them, set up one subject, one key light with a medium modifier, a 36-inch octobox works well, and shoot all five patterns in sequence without moving the subject. Start with the light directly in front and high for Butterfly, then walk it around to Loop, then Rembrandt, then Split. Meter each position at f/8. Keep your ISO at 100 and your shutter at 1/125. Compare the results side by side at 100 percent on your monitor. Do this once and the differences will be physically mapped into your memory in a way that no diagram can replicate.

The pattern you choose should be the first creative decision you make on any portrait setup, not an afterthought. Everything else, the modifier, the ratio, the fill placement, follows from that single choice.