The art of colour grading: correction, looks and skin tones

What is the difference between colour correction and colour grading?

Colour correction makes footage accurate and consistent. Colour grading gives it intent. Correction answers technical questions: is the exposure right, is white actually white, do two shots of the same room look like the same room? Grading answers creative ones: should this scene feel warm or cool, bright or heavy, and where should the eye land first? Correction always comes first, because a look laid over uncorrected footage behaves differently on every shot.

What correction fixes

• Exposure: lifting or lowering each shot so faces and key details sit at a sensible brightness.
• White balance: removing colour casts from mixed light, so a white shirt reads white and not green or orange.
• Contrast range: setting the black point and the white point so the image is neither washed out nor crushed.
• Log conversion: turning flat, grey log footage into a normal display image, starting from the camera maker's own conversion.
• Continuity: making every shot in a scene match the one before it, so the cuts stop drawing attention.
• Clean-up: noise reduction and small repairs such as flicker from artificial lights.

What grading adds

• A look: the contrast curve, palette and saturation that give the film its character.
• Direction of attention: gently brightening a face or darkening the edges of a frame so the viewer looks where the story needs them to.
• Separation: pulling a subject away from a busy background with small shifts in brightness or colour.
• Mood across the story: a film can move from cooler, quieter opening scenes to a warmer finish, and the grade carries that change.
• Brand fit: keeping product, uniform and signage colours recognisable inside the look.

Ungraded log rushes can look alarming. Many professional cameras can record a flat, low-contrast log image that keeps more detail in the highlights and shadows than a normal picture profile. It looks grey and lifeless until it is converted and graded, and that flatness is the point: it gives the colourist room to work. On the wildlife reels we made for Mohan Thomas, the footage enhancement covered denoising and cleaning raw log profiles, alongside the colour grading itself. That groundwork is correction, and every look depends on it.

Grading belongs near the end of post-production, after the picture is locked. Grading shots that are later cut wastes hours, and every shot added after the grade has to be matched in again. Our guide to how post-production works, from ingest to final delivery shows where colour sits among the other finishing stages.

How is a look built, and who decides it?

A look is not a filter. It is a short list of decisions, made once and applied with judgement to every shot: how hard the contrast is, how dense the blacks are, which colour the highlights and shadows lean towards, how saturated the image is overall, which colours are allowed to stand out and whether the picture carries texture such as grain. Written down, a look should fit in three or four lines. If nobody can describe it in words, it will drift from scene to scene.

Start from references and plain words

The most reliable way to agree a look is to collect a handful of still frames from films, ads or photographs that feel right, then describe what they have in common. 'Warm highlights, neutral shadows, gentle contrast, greens pulled back' is a brief a colourist can act on. 'Cinematic' is not, because it means something different to everyone in the room. Once the words are agreed, the look is built in a fixed order:

1. Agree three to five reference frames and a written description of the look with the director and the client.
2. Grade the key shots of each scene first, usually the widest shot and the main close-up of a face.
3. Review those frames on a calibrated monitor and on a phone, side by side with the references.
4. Lock the look once the key shots are approved, then carry it across the rest of the film.
5. Balance the film shot by shot, so every cut within a scene matches.
6. Watch the whole film straight through and fix anything that jumps.

Where presets and LUTs fit

A LUT, or look-up table, is a fixed map from one set of colours to another. Technical LUTs that convert a camera's log image into a standard display image are useful and widely used. Creative LUTs sold as ready-made looks are a different matter: they were built on someone else's footage, under someone else's light, so applied blindly they push some shots too far and barely touch others. Treat a creative LUT as a sketch, never as the grade.

Who decides the look

The colourist builds the look, but the decision belongs to whoever leads the film's creative direction, with the client approving it against the agreed references. On brand work, the brand team should see the look early, because the grade has to live alongside the identity. The right tone also changes from brand to brand. On the Elite Visual Production work, the RCB, WPL and IPL visuals followed an energetic, sharp style, while Total Environment required a more premium and refined tone; our editing and post-production focused on pacing, clarity, colour balance, visual flow and final delivery quality. The creative process was shaped around each project's identity, so the tone followed the brand rather than a house style.

Graphics belong in the same conversation. When titles, motion graphics and footage share a frame, their colours have to be decided together. On the one-year celebration film for Kantara: A Legend from Hombale Films, our services included motion graphics integration and visual styling alongside the edit. In work of that kind, a grade and a graphics palette chosen separately tend to fight each other on screen, so agree them as one decision.

Protect the brand's own colours

A warm look can turn a red logo orange, and a cool, teal look can turn a brand's green muddy. Before locking the look, put the product, uniforms, signage and packaging on screen and compare them with the brand guideline. If they drift, isolate those colours and hold them close to their true values while the rest of the image takes the look.

How do you keep skin tones natural?

Audiences forgive an unusual sky. They do not forgive a face that looks grey, orange or green. Skin is the colour viewers know best, so it is the first thing that gives a heavy grade away. Our rule is simple: whatever the look does to the rest of the frame, faces must still look like the people they belong to.

Use the scopes, then your eyes

Grading software includes a vectorscope, which plots the hue and saturation of every pixel in the frame, and many can show a skin tone indicator line. Skin of every complexion tends to sit close to that line in hue; what changes from person to person is mainly brightness and saturation. If a face sits well off the line, something is pulling it towards green or magenta. The scope is a check, not the answer. Once a face is close to the line, judge the rest by eye on a calibrated display.

Respect the full range of skin tones

Indian audiences see a wide range of complexions on screen, often in the same frame, and a grade should keep each person's skin true to them. In practice that means:

• Never lightening darker skin to suit a look. Expose and grade so deeper skin tones keep their detail, warmth and richness.
• Not forcing a group towards one shade. Two people standing side by side should still look like two different people.
• Watching the shadow side of darker faces, where lifting too far turns skin ashy and grey.
• Keeping the highlights on lighter skin from clipping to white, which flattens the face.

Common skin tone problems and their fixes

• Green casts from fluorescent tubes or low-quality LED lights: correct the white balance first, then make a small, targeted hue correction on the skin.
• Magenta skin from some LED panels, or from overcorrecting a green cast: pull back gently and check against the skin tone line.
• Orange faces under heavy teal and orange looks: exclude skin from the look's hue shift, or reduce the strength of the look.
• Mixed light on one face, such as daylight from a window on one side and warm lamps on the other: balance the two halves with a soft-edged window, accepting that some mixed light can only be reduced.
• Over-smoothing: beauty filters and heavy noise reduction erase pores and texture, and a little texture keeps a face human.
• Global saturation boosts that turn lips and cheeks red: add saturation to the background or the product instead of the whole frame.

Most skin problems begin on set, not in the grade. Consistent lighting and white balance make natural skin easy; two colours of light on one face make it hard. Our article on cinematography basics for brand and corporate films covers how light is shaped for interviews, products and spaces, and why those choices decide how much the grade can do later.

How do you match footage from different cameras?

Many brand films are not shot on a single camera. One project might combine a main camera, a second angle for interviews, a drone, a gimbal, phone clips sent by the client, screen recordings and archive material. Each records colour in its own way, so two shots of the same moment can look as if they were filmed on different days. Matching is the work of making them belong together.

Make matching easier at the shoot

• Set white balance manually in Kelvin on every camera instead of leaving it on auto, so it cannot shift in the middle of a shot.
• Use the same picture profile or log mode on cameras of the same make, and note the settings.
• Record a few seconds of a grey card or colour chart at the start of each setup, in that setup's light.
• Keep frame rates and shutter settings consistent, so motion and light flicker behave the same way on every camera.
• Label which camera filmed what, so the colourist is not guessing.

The matching process in the grade

1. Bring every source into one common working space, using each camera maker's own conversion for log footage.
2. Choose a hero camera, usually the main camera with the strongest image, and treat it as the reference.
3. Match exposure and contrast first, reading the waveform rather than trusting the screen.
4. Match white balance using the RGB parade, so neutral greys line up across the red, green and blue channels.
5. Match the colours viewers notice: skin first, then brand colours, then large areas such as sky, grass and walls.
6. Compare shots side by side with a split screen or a saved still from the hero camera.
7. Play the scene at full speed, because a mismatch that is invisible on a paused frame often shows up as a jump at the cut.

When sources cannot match perfectly

Phone clips, old archive and screen recordings rarely match a cinema camera exactly. They usually hold less colour information and fall apart sooner when pushed. Aim for footage that belongs rather than footage that is identical: matching contrast, skin and overall warmth goes most of the way. Where the gap is still obvious, a deliberate treatment, such as presenting archive inside a frame or with a slightly different texture, tells the viewer the difference is intended rather than a mistake.

Live events add another layer, because the light rarely stays still. On the TOBY PR event coverage for Lighter Land, the challenges included movement, lighting variations, crowd presence and an unpredictable event flow, and colour correction was part of shaping the footage into glimpse edits for digital and promotional platforms. Fast event work still needs matching; it simply has to happen inside a tighter process. For any quick-turnaround event, choose the hero camera in advance, lock white balance on every camera and agree a short list of shots that must match before anything is published.

How should you grade for web, phones and social platforms?

Professional grading monitors are calibrated to a standard. For HD video in standard dynamic range (SDR), the reference is ITU-R BT.709, the ITU's parameter values for HDTV, and YouTube's own recommended upload encoding settings recommend BT.709 as the standard colour space for SDR uploads. Grading to a standard matters because it is the only fixed point in a chain full of variables. Your audience, though, will rarely watch on a calibrated monitor. They watch on phones with automatic brightness, warm night modes, outdoor glare and their own colour processing, inside apps that compress the video before playing it.

What compression does to a grade

Streaming platforms compress uploads so they play smoothly on any connection. Compression throws away the information viewers are least likely to miss, and some grades lose more than others:

• Smooth gradients, such as skies, studio backdrops and soft vignettes, can break into visible bands.
• Deep shadows turn blocky, and detail that sat just above black disappears.
• Very saturated reds and blues can smear at their edges.
• Dark, low-contrast looks that feel moody on a grading monitor can look murky on a phone in daylight.

To protect a grade, keep important detail out of the deepest shadows, avoid pushing saturation to its limit, add a fine layer of grain where gradients band, and judge the result after compression instead of judging only the master file.

Tag and export with care

A common complaint is that a video looks washed out, or darker, once it is uploaded. Often the cause is not the grade but the colour metadata: the export is tagged one way and the player reads it another. YouTube's settings page also says that it converts unsupported colour spaces to BT.709 by mapping pixel values, so a file delivered in some other space is changed by the platform rather than by the colourist. Agree the delivery standard before grading starts, check that the export settings match it, and make a test upload to each platform before release, private or unlisted where the platform allows it. If any footage was recorded in HDR, decide early whether the final delivery is SDR or HDR, and grade for that delivery rather than for both at once.

Check vertical versions separately

A vignette, a brightened window on a face or a graded sky positioned for a 16:9 frame may land in the wrong place once the shot is reframed to 9:16 for Reels or Shorts. Every reframed version needs its own pass: move the windows and tracking, check that faces still get the benefit of the grade, and make sure on-screen text has enough contrast over its new background. Our piece on social media video trends that outlast the fads explains why vertical framing now has to be planned rather than cropped at the end.

A simple phone check

• Watch on at least two phones, including an older or mid-range model.
• Watch at full brightness and at half brightness.
• Watch indoors and in daylight, with night and warm display modes off and then on.
• Watch inside the app after a test upload, with captions and on-screen buttons visible.
• Note the timecode of anything that looks wrong and compare it with the master on the grading display.

Wildlife footage shows why this balance matters. For Mohan Thomas, the grade worked on contrast, saturation and tone mapping so that wildlife detail stood out while the footage stayed natural, and the reels were made for digital platforms. Detail that holds on a small, bright screen without the colours turning artificial is the target for most feed content.

Got my video on wildlife edited through House of Edits. Found them to be reliable and prompt. Their editing and colour grading is fabulous.

Mohan Thomas, wildlife filmmaker

What should you check before signing off the grade?

Sign-off is the last point at which a colour change is simple. After it, every fix means re-exporting the master and every version made from it. Work through this list on the final graded film, not on an earlier draft:

1. Skin looks natural in every scene and on every person, including the shadow side of faces.
2. Brand colours on products, signage and graphics are close enough to the brand guideline to be recognised at a glance.
3. Shots within each scene match, checked by playing the film straight through at full speed.
4. Highlights and shadows keep detail wherever it matters, such as a white shirt, a bright window or a dark suit.
5. Titles, captions and graphics stay legible over the graded image in every version.
6. Vertical, square and short cut-downs have each been checked, not assumed.
7. Export settings match the agreed delivery standard, and a test upload looks right on phones and on laptops.
8. The approved file is the one being published, and its version name is recorded.

How to give useful feedback on a grade

• Review on the device your audience uses most, and also on the best screen you have.
• Give timecodes rather than general impressions.
• Describe the change in plain words: warmer, less contrast on the faces, a darker sky, less vivid greens.
• Point to a reference frame when words fall short.
• Keep grade notes separate from edit notes, so the colourist is not asked to fix something only a recut can solve.

What to keep once the grade is approved

Ask for a clean graded master without titles, so later versions and new languages can be made without repeating the grade, along with thumbnails and still frames taken from the graded film. Keep the grading project as well, so a future cut-down starts from the approved look instead of from scratch.

If you have footage that needs correcting, a look that needs building or a set of mixed sources that needs matching, our video production team handles colour as part of post-production, including footage shot by you or another crew. You can read more about the studio on our about page, or browse more video production articles.