Soft light diffused through materials or reflection, producing no sharp shadows. Softboxes (60×60 to 150×200 cm) reduce intensity by 1–3 stops for gentle subject illumination.
Technical Details
Soft light is created by enlarging the effective light source using diffusion materials or reflection. Standard softboxes measure between 60x60 cm and 150x200 cm, with the ratio of light source size to subject distance determining the degree of softness. Diffusion materials reduce light intensity by 1-3 stops. Modern LED panels achieve color temperatures from 2700K to 6500K with CRI values above 95. Main variants include softboxes, Chimeras, beauty dishes (diameter 40-70 cm), bounce light, and natural diffusion through clouds or frosted glass panes.
History & Development
The systematic application of soft light began in 1915 with Cecil B. DeMille's experiments in facial lighting. In 1927, George Folsey developed the "North Light System" for MGM – large, diffuse light sources for uniform studio illumination. Photogenic Inc. launched the first commercial softbox in 1965. The transition to halogen Fresnel lights in the 1970s enabled more precise light shaping. Since 2010, LED technologies have revolutionized soft light production through reduced heat development and variable color temperature.
Practical Use in Film
In "Blade Runner 2049" (2017), Roger Deakins uses large-format LED panels for the characteristic, low-contrast interior lighting. Emmanuel Lubezki creates soft light in "The Revenant" (2015) exclusively through natural daylight and reflectors. Portrait shots typically require softboxes at a 45° angle to the subject, while product shots use 360° tent lighting. Soft light reduces makeup requirements by 30-40%, thus speeding up the shooting schedule. Disadvantages include higher power consumption, larger equipment volume, and reduced light modeling.
Comparison & Alternatives
In contrast to hard light (Fresnel spotlights, direct sunlight), soft light does not create defined shadow lines. Semi-hard light is produced by partial diffusion or medium light source sizes. Modern alternatives include ARRI SkyPanels (LED soft light), Kino Flo tubes, and Digital Cinema LED walls. For exterior shots, 12x12 foot silk frames replace natural soft light, while in the studio, book lights (indirect lighting via white walls) represent cost-effective alternatives. The choice depends on the desired mood: hard light for drama and contrast, soft light for intimacy and naturalness.