Video Summary
Lighting shapes mood and story; decisions are led by the DP and executed by the gaffer.
Light sources: natural (sun, moon, fire) vs artificial (electrical); ambient vs practical vs motivated lighting.
Measure light with lumens (output) and lux/foot-candles (incident); color temperature in Kelvins alters mood.
Light falloff follows the inverse square law—doubling distance cuts intensity by ~75%.
Exposure is set by aperture, shutter speed and ISO; contrast ratio, high-key and low-key define scene brightness and mood balance.
Ambient lighting is any existing light at a location that the crew didn't bring (e.g., streetlamps); practical lighting is any light source visible in the frame and can be either ambient or placed by the crew.
Light intensity falls off by the inverse square of distance—doubling the distance from the source reduces incident light to about 25%—so small changes in distance greatly change exposure and falloff.
Use hard, directional light for stark shadows and dramatic or intense scenes; use soft, diffused light for gentler, romantic or brighter moods (natural soft light often appears at golden hour).
Flags and barn doors block or shape light; diffusion (silks, diffusers) softens it; reflectors bounce light; egg crates reduce spill; gels change color temperature; ND gels reduce intensity; C-stands and light stands position fixtures.
"Lighting is one of the most important elements of filmmaking."
Lighting is a critical aspect that goes beyond merely illuminating a scene; it plays a significant role in visual storytelling.
The choice of lighting can considerably influence the mood of a scene, offering insight into characters and their emotions.
Key decisions regarding lighting are typically made by the Director of Photography (DP) and the gaffer, who oversees the execution of the lighting plan.
"All light can be split into two categories: natural and artificial."
Light sources can be categorized into natural and artificial types. Natural light includes sunlight, moonlight, and firelight, while artificial light refers to any man-made light powered by electricity.
Ambient lighting includes lights present on location without being brought by the crew, such as street lamps and neon signs.
Practical lighting consists of visible light sources within the frame, which can either be ambient or arranged by the gaffer.
"Lumens is a measurement of how much light a source produces."
Understanding the properties of light is essential for cinematographers. Lumens measure the amount of light produced, while Lux (or foot-candles) quantifies how much light reaches the subject.
The concept of light falloff, which describes the loss of intensity as light travels away from its source, can be predicted using the inverse square law.
Color temperature, measured in Kelvins, significantly influences the mood of a scene, with daylight typically being around 5600K and tungsten lights around 3200K.
"Exposure is the amount of light that reaches the sensor or film stock."
Exposure is determined by three components: aperture, shutter speed, and ISO. The aperture size is measured in f-stops and influences the amount of light entering the lens.
Contrast ratio is a term used to measure the difference between light and shadow areas in an image, typically evaluated on the subject's face or between the subject and background.
High key lighting results in low contrast, creating brightly lit scenes, while low key lighting enhances shadows for a more dramatic effect.
"Hard light is more directional and creates stark shadows."
Cinematographers often have to choose between hard light and soft light, where hard light is characterized by distinct shadows, suitable for intense scenes.
Soft light, on the other hand, diffuses light to create less defined shadows, often used to convey emotions in happier or romantic scenes.
Natural occurrences of soft light, like during the golden hour, can enhance the quality of scenes significantly.
"A professional film set often has an expansive variety of lighting equipment."
A wide range of lighting equipment can be found on film sets, including tungsten lights, HMI lights for daylight simulation, fluorescent lights, and adjustable LED lights.
Gels, which are thin plastic sheets of different colors, are often used to manipulate the light’s color temperature to fit the cinematic needs.
Light meters are essential tools for measuring incidental lighting, which informs the camera's exposure settings for optimal image quality.
"Another way to mitigate the intensity of the light is with neutral density gels."
Neutral density gels are useful tools in cinematography that can be attached directly to a light source or applied to windows to effectively reduce the amount of sunlight entering a scene.
Flags serve a different purpose; they are opaque boards designed to shape and block unwanted light, ensuring that only the desired lighting effects enhance the cinematic atmosphere.
"Barn doors are adjustable flaps on the light that have a similar function."
Barn doors are adjustable flaps located on light fixtures, allowing cinematographers to control and direct the light more precisely.
Egg crates help to manage light spill, directing it where it’s needed while preventing interference in other areas, thus enhancing overall lighting control on set.
"Cookies are boards with patterns cut into them that create a dappled effect when placed in front of a light."
"Mounting and positioning lights on set can be done with light stands or C-stands."
"Believe it or not, we've just scratched the surface of cinematic lighting."
The discussion covers just the basics of cinematic lighting, hinting at a wealth of additional terms, gear, and concepts that continue to evolve in the industry.
Future episodes will delve deeper into practical applications by exploring real-life lighting scenarios and how to effectively light subjects and backgrounds.
"In the description, you'll find a link to the StudioBinder blog where you can download a PDF cheat sheet."
