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Split Lighting: How to Get the Half-Lit Face

Split lighting places the key light directly to the side of the subject, so one half of the face is lit and the other falls into shadow. It is the most severe of the classic portrait patterns and the least forgiving.

How to set up split lighting

  1. 1Place the key light at a full 90 degrees to the side of the subject.
  2. 2Keep it at roughly their eye level rather than raising it.
  3. 3Have the subject face the camera straight on so the division runs down the centre of the face.
  4. 4Decide deliberately whether to add fill. No fill means true black on the shadow side, which is usually the point.

How to recognise it

A vertical division down the middle of the face, with the shadow side reading close to black and often only a single catchlight in the lit eye.

Best for

  • Dramatic, high-contrast character portraits
  • Musicians, athletes and anything that wants edge
  • Black and white work, where the hard division is the composition

When to avoid it

Beauty, corporate and anything where the subject needs to look approachable. It also emphasises skin texture on the lit side, which not everyone wants.

The prompt for this look

This is the wording that recreates split lighting in an AI image model. The builder below already has it selected, so add your subject and adjust the lens to taste.

split lighting, key light at 90 degrees to the side at eye level, one half of the face lit and the other in shadow

Try it

Build a split lighting prompt

Camera

Canon EOS R5

Sets the overall rendering: colour science, dynamic range and how digital or filmic it looks.

Canon EOS R5: Warm, forgiving colour, especially on skin. The safe default when you want the photo to look pleasant rather than clinical.

Focal length

85mm

The single biggest control over how a face or product is shaped. It changes proportions, not just how close you are.

85mm: Slightly compresses features, which narrows the nose and flatters most faces. This is the portrait default for a reason.

Aperture

f/1.8

Controls how much stays sharp behind your subject.

f/1.8: Strong background separation while keeping the whole face sharp. The safer version of f/1.4.

Framing

Medium shot

How much of the subject and scene is in the frame.

Medium shot: Subject plus a little breathing room. The default that rarely goes wrong.

Texture

Natural skin texture

Optional. These are the details that stop an image reading as AI.

Natural skin texture: The single most useful fix for faces. AI defaults to plastic, poreless skin, and this is what pulls it back.

Lighting

Split

The setup that decides the mood. Named patterns have their own guide, linked below.

Split: Maximum drama. Splits the face down the middle into light and shadow, with a hard edge between them. Full guide

Your prompt

Opens with your prompt already filled in. Free, no signup.

Other setups