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What Is Colour Grading?
Colour grading is the process of altering and enhancing the colour of film or video footage to establish a visual mood, ensure consistency across shots, and create the final "look" of a project. It is one of the last creative steps in post-production and one of the most transformative. The same footage can feel warm and nostalgic, cold and clinical, or stark and confrontational depending on how it is graded.
Audiences rarely notice colour grading consciously, which is part of what makes it so effective. It operates below the threshold of explicit attention, shaping the emotional texture of every frame without announcing itself. A well-graded film does not look "graded." It looks like it could not have looked any other way.
Colour correction vs colour grading
These terms are frequently used interchangeably, but they describe different stages of the same process.
Colour correction is the technical step. It addresses problems: balancing exposure so the image is neither too dark nor too bright, fixing white balance so whites appear neutral, adjusting contrast to ensure the image sits within the correct range for delivery. Most importantly, correction ensures consistency across shots. When a scene cuts between two camera angles filmed twenty minutes apart as the sun moved, colour correction makes them match so the viewer does not notice the difference. The correction stage is about making the footage look accurate and consistent, bringing it to a neutral, balanced starting point.
Colour grading is the creative step that follows. Once the footage is corrected and matched, the colourist applies a deliberate visual style. This might mean pushing the shadows toward teal and the highlights toward orange for a contemporary blockbuster look, desaturating everything and lifting the blacks for a faded vintage feel, or isolating specific colours to draw the eye. Grading is where the footage stops being a faithful recording of the scene and starts becoming a piece of visual storytelling.
Most projects need both stages, and they happen in sequence: correct first to establish a clean foundation, then grade to build the creative look on top. Skipping correction and jumping straight to a creative grade is like trying to season a dish without tasting it first. You might get lucky, but you are working blind.
Why colour grading matters
Colour carries emotional weight. Research in visual perception and psychology consistently supports what filmmakers have understood intuitively for decades: the colour palette of an image affects how the viewer feels about it.
Warm tones, with oranges and ambers pushed into the highlights and midtones, feel intimate, nostalgic, or inviting. Cool tones, with blues and teals in the shadows and midtones, feel clinical, melancholy, or sterile. Desaturated palettes feel gritty, realistic, or bleak. High contrast with rich saturation feels dramatic or hyper-real. These are not arbitrary associations; they are deeply embedded in how humans process visual information.
This makes colour grading one of the most powerful storytelling tools in post-production. A romantic scene graded with warm, soft tones and gentle contrast communicates something fundamentally different from the same scene graded with cold, hard light and deep shadows, even if the dialogue and performance are identical. The grade shapes the audience's emotional response to every frame they see.
For video editors and colourists working on narrative projects, documentaries, or branded content, the grade is where the visual identity of the project solidifies. It is the step where hours of footage shot across different days, locations, and lighting conditions become a unified visual world.
The colour grading workflow
A typical colour grading workflow follows a structured sequence, though the specifics vary depending on the software, the facility, and the project.
The process begins with conforming the timeline. The editor delivers the locked edit, and the colourist imports it into the grading software, matching it shot for shot. This step connects the edit decisions to the original high-resolution camera files, since editors often work with lower-resolution proxy files during the creative edit. Understanding when a project reaches picture lock is important here: grading an edit that is still changing means wasted work.
Next comes the base correction. The colourist works through the timeline shot by shot, adjusting exposure, white balance, and contrast to bring each clip to a neutral, well-exposed starting point. This is where technical problems are fixed: underexposed night exteriors are brought up, overcast daylight is warmed, mixed lighting is balanced.
Shot matching follows. Within each scene, the colourist ensures that all angles and coverage look consistent. If a conversation scene was shot with three cameras, those three angles need to cut together seamlessly with no visible shifts in colour temperature, exposure, or contrast. This is painstaking work that requires a trained eye and precise tools.
With the correction complete, the creative grade begins. The colourist works with the director or cinematographer to develop the look of the project. This might involve applying a LUT as a starting point, building a look from scratch using colour wheels and curves, or referencing stills and mood boards that the creative team assembled during pre-production. The grade is applied globally first, then refined scene by scene and shot by shot.
Secondary corrections come last: targeted adjustments to specific colours, tones, or areas of the frame. A skin tone that is pushing too red after the global grade is pulled back. A sky that has gone muddy is isolated and given more saturation and contrast. A distracting sign in the background is darkened to pull the eye away from it. These refinements are where the grade becomes polished.
Finally, the graded timeline is rendered for delivery, whether that means a DCP for theatrical distribution, a broadcast master, or files for streaming platforms with specific colour space requirements.
Primary and secondary corrections
Primary corrections are global adjustments that affect the entire image. They include the foundational controls of colour grading: lift, gamma, and gain (which control the shadows, midtones, and highlights respectively), overall contrast, saturation, and white balance. When a colourist adjusts a primary control, every pixel in the frame is affected. Primary corrections are where the broad strokes of the grade happen, where the overall tone and feel of the image are established.
Secondary corrections are targeted. They affect only specific colours, tonal ranges, or spatial regions of the image. A colourist might use a colour qualifier to isolate skin tones and adjust them independently, ensuring that a creative grade does not make talent look sickly or sunburnt. Power windows allow the colourist to draw a shape around a specific area of the frame and grade it separately: brightening a face, darkening a background, adding warmth to one side of the image. Luminance qualifiers can target just the brightest or darkest parts of the frame.
The interplay between primary and secondary corrections is where colour grading becomes craft. A skilled colourist might apply a bold creative grade using primaries, then use secondaries to pull specific elements back from the edge, ensuring that the overall look is striking without any individual element becoming distracting.
The tools of colour grading
Colour grading interfaces centre on a set of core tools that have remained conceptually consistent even as the software has evolved.
Colour wheels for lift, gamma, and gain provide an intuitive way to push the colour balance of different tonal ranges. Dragging the lift wheel toward blue adds a blue tint to the shadows; dragging the gain wheel toward orange warms the highlights. This three-way colour balance is the foundation of most grading work.
Curves offer more precise control over the tonal response of the image. A curves adjustment maps input values to output values: by reshaping the curve, the colourist can adjust contrast, shift colour balance, and target specific tonal ranges with more precision than colour wheels alone allow. Curves for individual red, green, and blue channels provide granular colour control.
Qualifiers allow the colourist to isolate specific colours. By sampling a colour in the image, typically using hue, saturation, and luminance ranges, the colourist can select, say, just the blue of a sky or the red of a dress and adjust it independently. Qualifiers are essential for secondary corrections.
Power windows are shapes drawn over the image to isolate spatial regions. They can be circles, rectangles, curves, or freehand shapes, and they can be tracked to follow movement in the frame. Power windows let the colourist apply different grades to different parts of the same shot.
LUTs, or look-up tables, are pre-built colour transforms that can be applied as starting points. A LUT maps input colour values to output values according to a table, and they are commonly used to convert LOG footage to a specific colour space or to apply a predefined creative look. LUTs are starting points, not finished grades; experienced colourists treat them as a foundation to build on.
Scopes provide objective measurement of the image's colour and luminance values. The waveform monitor shows luminance distribution across the frame, the vectorscope shows colour saturation and hue, and the RGB parade shows the red, green, and blue channels separately. Scopes are essential because the human eye adapts to what it sees; after staring at footage for hours, a colourist's perception shifts, and scopes provide the objective reference that eyes alone cannot.
Grading software
DaVinci Resolve is the industry standard for colour grading. Originally developed by da Vinci Systems and now owned by Blackmagic Design, Resolve has grown from a dedicated grading application into a full post-production suite encompassing editing, audio, visual effects, and colour. Its colour page is exceptionally deep, with node-based grading, comprehensive secondary tools, and support for HDR workflows. The free version of Resolve includes nearly all of the colour grading toolset, making professional-grade colour work accessible to independent filmmakers and content creators.
Baselight by FilmLight is the high-end facility standard, used extensively in feature film and premium television post-production. It is a dedicated grading system known for its colour science, its handling of wide-gamut and HDR material, and its integration with high-end facility workflows. Baselight is a significant investment and is typically found in dedicated grading suites.
Adobe Premiere Pro includes the Lumetri colour panel, which provides a streamlined set of grading tools within the editing environment. For many video editors working on corporate, commercial, or social content, Lumetri offers enough control to produce a good grade without leaving the editing application. Final Cut Pro provides similar colour tools integrated into its editing workflow.
LOG and RAW footage
Professional cinema cameras record in LOG or RAW formats specifically to preserve the maximum amount of tonal information for grading. Understanding why requires a brief look at how cameras and displays handle light differently.
A camera sensor captures a wide range of brightness levels, from deep shadows to bright highlights. The total range it can capture, measured in stops of dynamic range, might be twelve, fourteen, or more stops in a modern cinema camera. A standard display, however, can only show a fraction of that range. LOG encoding is a way of compressing the sensor's full dynamic range into a file that can be stored and processed, using a logarithmic curve that allocates more code values to the shadow and midtone regions where the human eye is most sensitive to differences.
The result is footage that looks flat, desaturated, and low-contrast straight out of the camera. This is by design. The flat look means that no tonal information has been clipped or crushed, giving the colourist the maximum latitude to push the image in any direction during the grade. Shadows can be lifted without turning to mush; highlights can be brought down without losing texture. The more data in the file, the further it can be pushed before it breaks.
RAW footage takes this principle further by recording the sensor's unprocessed data, before any colour science or compression is applied. This gives the colourist even more control, including the ability to change the white balance and exposure after the fact, but it comes with significantly larger file sizes. Managing these large files across a team often requires thoughtful cloud storage and clear file organisation.
Applying the correct input transform, the colour space and gamma curve conversion that maps the LOG or RAW data to a working space the grading software can display correctly, is a critical first step. Using the wrong input transform produces colours that are shifted, contrast that is wrong, and a starting point that fights the colourist at every step. Understanding colour space is fundamental to getting this right.
The colourist's role
The colourist is a specialised creative role in post-production, distinct from the editor. While some editors grade their own work, particularly on smaller productions, the colourist on a larger project is a dedicated professional whose craft is colour.
A colourist works closely with the director and cinematographer to achieve the intended look of the project. This collaboration often begins before the shoot, with discussions about references, mood boards, and the emotional arc of the story as expressed through colour. Some colourists are involved in camera testing, helping the production team understand how different cameras, lenses, and lighting setups will respond to the intended grade.
The grading suite is a collaborative environment. In a typical session, the director and sometimes the cinematographer sit with the colourist, watching on calibrated monitors as the grade develops. The colourist translates creative direction ("I want this scene to feel oppressive" or "this flashback should feel like a faded memory") into precise technical adjustments. This requires both a deep understanding of the tools and a visual sensitivity to how subtle changes in colour affect mood.
For projects where the grading happens remotely, clear communication becomes essential. The ability to annotate specific frames, share reference images through a collaborative workspace, and conduct review and approval workflows asynchronously has become an important part of modern post-production, particularly for geographically distributed teams.
The colourist's contribution is sometimes underappreciated because the best grading is invisible. When an audience watches a film and says the cinematography was beautiful, the colourist's work is woven into that impression. The cinematographer captured the light; the colourist shaped it into its final form.
Colour grading and noise
The relationship between colour grading and denoising is worth noting because they interact in important ways. Grading operations that increase contrast or lift shadow detail will often make noise more visible. A shot that looked acceptably clean before the grade may reveal significant noise once the shadows are brought up or the contrast curve is steepened.
This is why many colourists address noise reduction as part of the grading process rather than treating it as a separate step. The grade reveals the noise; the noise reduction is calibrated to the graded image. Applying denoising at the right point in the pipeline, and understanding the trade-off between noise removal and detail preservation, is part of the colourist's skill set.
Colour grading across contexts
The principles of colour grading apply whether the project is a feature film, a television series, a commercial, a documentary, or a social media video. The scope and complexity vary, but the fundamental process of correcting for consistency and grading for mood is universal.
In feature film and high-end television, grading is a dedicated phase with its own schedule, budget, and facility. The colourist may spend weeks on a feature, working through the film reel by reel in a calibrated suite.
In commercial and corporate work, the grade is often tighter in scope and timeline. A thirty-second commercial might be graded in a day, but the expectations for visual polish are extremely high. Branded content requires careful colour management to ensure that product colours are accurate across different displays.
For independent filmmakers and content creators, grading has become more accessible than ever. The availability of professional tools at low or no cost, combined with abundant educational resources, means that a thoughtful grade is within reach of any production. Having a well-organised library of creative assets, including LUTs, reference stills, and storyboards that articulate the intended look, helps even a solo creator approach grading with intention rather than guesswork.
Frequently asked questions
Do I need to colour grade every project?
Every project benefits from at least a basic colour correction pass to ensure consistent exposure and white balance. Whether a full creative grade is necessary depends on the project. A corporate training video may need only correction, while a narrative short film or a high-end commercial typically calls for a deliberate creative grade.
What is the difference between a LUT and a grade?
A LUT is a mathematical colour transform stored as a look-up table. It can be applied instantly and produces the same result on any footage. A grade is a bespoke set of adjustments built specifically for a piece of footage, accounting for its unique exposure, colour balance, and content. LUTs are useful as starting points, but they are not a substitute for grading because they cannot account for the specific characteristics of each shot.
Can I grade footage that was not shot in LOG?
Yes. LOG footage provides the most latitude for grading, but any footage can be graded. Standard Rec.709 footage has less room to push before it breaks, so the grade needs to be more restrained. The correction and grading principles are the same; the practical limits are narrower.
How long does colour grading take?
It varies enormously. A simple corporate video might be corrected and graded in a few hours. A feature film can take two to six weeks. The timeline depends on the length of the project, the complexity of the look, the number of effects shots that need special treatment, and the expectations of the client or director.
What monitors do colourists use?
Professional colourists use calibrated reference monitors that display colours accurately according to defined standards. These monitors are regularly calibrated with a probe and software to ensure consistency. Consumer displays, including high-quality ones, are not reliable for critical colour work because their colour accuracy varies and changes over time.
What is a node-based grading workflow?
In DaVinci Resolve and some other grading systems, adjustments are applied as a chain of nodes rather than stacked layers. Each node contains its own set of corrections, and nodes can be connected in serial or parallel. This gives the colourist fine control over the order of operations and makes it easy to isolate and adjust individual components of a complex grade.
Is colour grading the same in HDR?
The principles are the same, but HDR (high dynamic range) grading has additional considerations. HDR displays can reproduce a wider range of brightness levels, which means the colourist has more dynamic range to work with but also needs to manage highlights and specular detail more carefully. Many projects are now graded for both SDR and HDR deliverables, which can involve different trim passes.
Should the editor or a dedicated colourist do the grade?
On smaller projects, the editor often handles the grade, and the integrated colour tools in modern editing software make this practical. On larger projects, a dedicated colourist brings specialised expertise, a trained eye, and a calibrated environment that an editing suite may not provide. The division depends on budget, timeline, and the complexity of the desired look.
What are the most common colour grading mistakes?
Over-grading is the most common: pushing colours and contrast so far that the image looks unnatural or the grade becomes distracting. Other common issues include inconsistent grading between shots in the same scene, damaging skin tones with overly aggressive global adjustments, and applying a look that conflicts with the content's tone.