Hard Light

Light with sharp shadow edges. It jumps quickly from light to shadow, so the line between bright and dark is crisp and contrast is strong. Light straight from a lamp behaves this way; passing it through fabric or a reflector turns it into soft light. You cannot turn soft light back into hard light, though.

Lighting positions seen from above. A small, hard light is placed about 45° to the side of the camera, a little above eye level.

Camera view. The line between the bright and dark sides is crisp, and the shadow the ear casts on the head is sharp too.

How it feels

Tension
Intensity
Dramatic
Sharpness
Gritty

When to use it

Noir and thrillers
A desert at midday
A stage spotlight
An office under glaring fluorescent lights

In the movies

Lawrence of Arabia (1962) · Source: Movieclips (YouTube) · Original video

Sunset Boulevard (1950) · Source: Paramount Movies (YouTube) · Original video

Not to be confused with

Soft Light: From the same spot, a wide light source makes shadow edges blur softly. It feels calm and gentle.
Low-key: Low-key is a tone with little fill and high contrast; hard is the quality of shadow edges. You can make low-key with soft light too.
Spot Light: Spot is the name of a light with a narrow beam. It is not the same thing as hard light.

Prompt

Keyword

hard light

Descriptive

A single hard light from 45 degrees to the side, with crisp, sharp-edged shadows and strong contrast, tense and dramatic.

Try these combinations

Medium shot + hard light: a duel in a desert town at noon
Medium shot, hard side lighting with sharp shadow edges, single-source dramatic illumination, a gunslinger in a desert town at noon
Wide shot + hard light: working late under fluorescent lights
Wide shot, harsh fluorescent office lighting, tired workers at their desks late at night