Tint is the white balance adjustment that shifts image colors along the green-magenta axis, at right angles to the blue-amber axis controlled by color temperature. In photography, within color and white balance, it corrects green or magenta color casts that a Kelvin setting alone cannot remove, such as those from fluorescent tubes, LED panels or light reflected from foliage.
White balance therefore has two dimensions: temperature sets how warm or cool neutral tones appear, and tint sets whether they lean toward green or magenta. Only when both are correct do gray and white surfaces appear truly neutral.
Why white balance needs a tint control
Color temperature in Kelvin describes light sources that behave like a heated black body, from warm candlelight to cool shade. Their colors fall along a curve called the Planckian locus. Many real light sources, however, do not sit exactly on that curve; their light is shifted toward green or toward magenta.
Tint measures and corrects that perpendicular offset. In lighting technology the same deviation is described as Duv, the distance from the Planckian locus, with positive values toward green and negative values toward magenta. A tint slider in a camera or raw processor is a practical way of compensating for it.
The table shows how the two white balance controls divide the work.
| Control | Color axis | Typical unit or scale | Corrects |
|---|---|---|---|
| Color temperature | Blue to amber | Kelvin, about 2000 to 10000 K | Warm or cool casts |
| Tint | Green to magenta | Relative scale, often minus 150 to plus 150 | Green or magenta casts |
Sources of green and magenta casts
Green and magenta casts usually come from light sources with an uneven spectrum or from colored surfaces that reflect light onto the subject. The table lists the most common causes and the usual direction of correction.
| Source | Typical cast | Usual tint correction |
|---|---|---|
| Fluorescent tubes | Green | Toward magenta |
| Low-quality LED panels | Green or magenta, model dependent | Opposite to the measured shift |
| Mercury vapor lamps | Strong green-blue | Strong shift toward magenta |
| Light reflected from grass or foliage | Green on skin | Toward magenta, often locally |
| Some LED screens and signs | Magenta or green | Opposite to the cast |
| Underwater scenes at depth | Blue-green | Toward magenta plus warmer temperature |
Light quality metrics such as CRI and TLCI indicate how faithfully a source renders color. A low score often goes together with a noticeable tint deviation, so tint correction is especially common when working with inexpensive continuous lighting.
Adjusting tint in camera and in raw processing
Tint can be set at capture or afterward. In the camera, it appears as a white balance shift, usually on a two-axis grid where one axis is blue-amber and the other green-magenta. In raw processing software, it appears as a tint slider directly under the temperature slider.
| Method | Where it happens | Advantage | Limitation |
|---|---|---|---|
| Custom white balance | Camera, from a gray card shot | Sets temperature and tint together | Valid only for that light |
| White balance shift grid | Camera menu | Fine-tunes any preset | Easy to forget and leave active |
| Raw tint slider | Raw processor | Fully reversible after capture | Needs a neutral reference to judge |
| Eyedropper on a neutral | Raw processor | Fast and objective | Fails if the reference is not neutral |
| Color checker profile | Raw processor with a target | Accurate under difficult light | Requires a target in the scene |
Because a raw file stores unprocessed sensor data, tint corrections in raw processing are lossless. In JPEG files, strong tint corrections can cause banding and loss of saturation because the original white balance is already baked into the image.
Tint compared with related color terms
Tint is frequently confused with other color adjustments. It differs from a general color cast in that it addresses only the green-magenta direction, and it differs from hue and saturation, which change specific colors rather than the neutral balance of the whole image.
- White balance is the overall goal of rendering neutrals as neutral; tint is one of its two controls.
- Kelvin describes the temperature axis only and cannot express a green or magenta shift.
- Color checker targets provide the neutral patches needed to set tint objectively.
- Camera color profiles shape how colors are rendered after white balance, not the neutral point itself.
In everyday art language, tint can also mean a color mixed with white. In photography color work, the term refers only to the green-magenta white balance axis.
Common mistakes with tint
Tint errors are often harder to notice than temperature errors, because the eye adapts quickly and because skin tones hide a slight green shift. The table lists frequent problems.
| Problem | Cause | Fix |
|---|---|---|
| Sickly greenish skin | Uncorrected fluorescent or foliage light | Shift tint toward magenta using a neutral reference |
| Pink or purple whites | Overcorrected tint | Move tint back toward green |
| Mixed casts in one frame | Two light sources with different tint | Gel lights or use local corrections |
| Inconsistent series | Auto white balance changing between frames | Set a fixed custom white balance |
| Corrections judged on an uncalibrated screen | Display has its own tint error | Calibrate the monitor before editing |
Under mixed lighting, no single tint value can neutralize every area. Professionals then gel the light sources, for example with a plus green filter on a flash used under fluorescent tubes, so that all lights share the same tint before the exposure.
Understanding it simply
Some lights make photos look a bit green, others a bit pink. Tint is the slider that fixes this, pushing colors toward magenta to cancel green or toward green to cancel magenta.
It works together with the warm-cool setting most people know. Together, the two make white things look white and skin look natural, no matter what kind of lamp lit the scene.
Applied in practice
A corporate photographer shoots staff portraits in an office lit by ceiling fluorescent tubes. Using an auto white balance, the first test images show a faint green tone on faces and the white walls look slightly olive.
The photographer first fits the speedlight used as key light with a plus green gel, so its light carries the same green shift as the room light. A gray card shot with both sources then sets a custom white balance, which settles at about 4000 K with a tint shift of roughly plus 15 toward magenta. The resulting portraits show neutral walls and natural skin tones, and the whole series needs no further color correction in post-processing.