A lighting diagram is a top-down visual plan of your studio setup showing where each light, modifier, reflector, and the subject are positioned. It helps photographers pre-visualize complex setups, communicate with teams, replicate looks across shoots, and save valuable setup time. Professional photographers use lighting diagrams to document their signature lighting styles and share techniques with assistants or students.

Three-point lighting is the foundational portrait lighting technique consisting of: Key Light (main light, typically at 45° to the subject), Fill Light (opposite side, softer, reduces shadows), and Rim/Back Light (behind the subject, creates separation from background). In this tool, place the Key Light at roughly 45° right or left of camera, the Fill Light opposite at lower intensity distance, and the Rim Light behind the subject facing toward them.

Softboxes provide controlled, directional soft light with minimal spill — ideal for precise lighting where you want to control exactly where light falls. Umbrellas (shoot-through or reflective) produce a broader, more diffused spread with softer shadows and are generally more affordable and quicker to set up. Use softboxes for controlled portraits and product shots; use umbrellas for group shots or when you need to fill a larger area with soft light.

A beauty dish is a shallow, parabolic reflector that creates a unique light quality — crisp and contrasty yet soft enough to be flattering. It produces a signature catchlight in the eyes (a round donut-shaped reflection) and is widely used in fashion and beauty photography. Position it slightly above the subject's eye level, angled downward at about 30-45°, typically centered or slightly off-axis from the camera.

A rim light (also called a kicker or hair light) is placed behind and to the side of the subject, aimed at the edge of their head/shoulders. It creates a bright outline that separates the subject from the background, adding depth and dimension. Position it approximately 120-150° off the camera axis, slightly above head height. Be careful with power — it should be bright enough to create a rim effect without overexposing. A grid or flag can help control spill.

Click the Print button to open your browser's print dialog — from there you can save as a PDF (select "Save as PDF" as the printer), which creates a clean, vector-quality document perfect for sharing with your team or keeping in your shot list binder. You can also take a screenshot of the diagram for quick sharing via messaging apps or social media.

The lighting ratio describes the brightness difference between the key and fill lights. A 2:1 ratio (key is 1 stop brighter than fill) creates subtle, natural-looking shadows — great for corporate headshots. A 4:1 ratio (2 stops difference) adds more drama and dimension for creative portraits. A 1:1 ratio (equal brightness) produces very flat, shadowless lighting often used in high-key beauty work. In your diagram, note relative distances and power levels to indicate ratios.

V-Flats are large, freestanding foam boards (typically 4×8 feet) hinged together in a V shape. They can be used as reflectors (white side), negative fill/light absorbers (black side), or as large flags to block stray light. Flags are smaller opaque panels used to shape light by casting controlled shadows or preventing lens flare. Place them in your diagram wherever you need to control spill or create shadow areas on the subject or background.