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How to Create and Use LUTs in Affinity Photo

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Lookup tables, usually called LUTs, are a practical way to apply consistent color and tone styling across images in Affinity Photo. They are especially useful when you want a repeatable look: a warm editorial grade, a muted commercial palette, a film-inspired contrast curve, or a clean product photography finish. Used properly, LUTs can save time without replacing careful editing judgment.

TLDR: In Affinity Photo, you can create a LUT by building a color grade with adjustment layers, then exporting it as a LUT file, commonly in .cube format. You can use that LUT later through a LUT Adjustment layer and control its strength with opacity. For example, a portrait photographer editing 150 images from one session might use a custom LUT to apply 70–80% of the intended color style consistently, then fine-tune exposure and skin tones image by image.

What a LUT Does in Affinity Photo

A LUT is essentially a color translation table. It tells Affinity Photo how one set of colors and tones should be converted into another. If a shadow shifts slightly blue, highlights become warmer, and midtones gain contrast, a LUT can store that transformation and apply it to other images.

However, a LUT is not a complete editing preset. It does not store cropping, retouching, object removal, sharpening, noise reduction, masks, or local brush work in a meaningful way. It is best understood as a global color and tone recipe. This distinction is important because many disappointing LUT results come from expecting a LUT to fix exposure, composition, or lighting problems.

Preparing an Image Before Creating a LUT

Start with a well-exposed, representative image. If you are creating a LUT for a portrait collection, use a portrait with normal skin tones and typical lighting. If it is for product photography, choose an image with accurate whites, blacks, and brand colors. A LUT made from an unusual image, such as one shot under heavy colored lighting, may behave unpredictably on regular photos.

Before building the LUT, correct the basics:

  • Exposure: Make sure the image is neither too dark nor too bright.
  • White balance: Neutralize unwanted color casts before applying a creative look.
  • Contrast: Establish a clean tonal foundation.
  • Color accuracy: Check skin, whites, and important brand colors.

This does not mean the image must be perfect, but it should be stable. LUTs behave better when they are built on sound corrections rather than used to compensate for avoidable technical issues.

Creating a LUT in Affinity Photo

To create a LUT, build your desired look using adjustment layers. In Affinity Photo, this typically means working non-destructively above your image layer. Common adjustment layers for LUT creation include Curves, HSL, Selective Color, Color Balance, Levels, and Gradient Map when used carefully.

A reliable workflow looks like this:

  1. Open your image in Affinity Photo and complete basic corrections first.
  2. Add adjustment layers for the creative grade. For example, use Curves for contrast, HSL to reduce oversaturated greens, and Color Balance to warm highlights.
  3. Keep the grade global. Avoid relying on masks, healing, blur, or localized edits if your goal is to export a reusable LUT.
  4. Test the strength. If the grade looks too aggressive on the source image, it will probably be too aggressive on other images too.
  5. Export the LUT using Affinity Photo’s LUT export option. Choose a common format such as .cube, which is widely supported by photo and video software.

When exporting, you may see options related to LUT size or quality. A 32-point LUT is often sufficient for general photography and keeps files manageable. A 64-point LUT can provide smoother precision for demanding color work, although the difference is not always visible in everyday images. For professional workflows, it is worth testing both and checking gradients, skin transitions, and saturated colors.

Applying a LUT to an Image

Using a LUT in Affinity Photo is straightforward. Add a LUT Adjustment layer, load or select the LUT file, and let it apply above your image. Because it is an adjustment layer, you can work non-destructively and refine the effect.

For a controlled result, follow these steps:

  • Add the LUT Adjustment above your image or above your correction layers.
  • Load the LUT file, usually a .cube file.
  • Reduce opacity if the effect is too strong. Many LUTs work best between 20% and 70% opacity.
  • Adjust exposure and white balance separately if the image still feels wrong.
  • Stack carefully. Multiple LUTs can create harsh colors, clipped shadows, or unnatural skin tones.

Best Practices for Professional Results

The most dependable LUTs are subtle. A strong stylized LUT may look impressive on one sample image but fail across a broader set. If you want a LUT for client work, build it to support the image rather than dominate it. Skin should remain believable, whites should not become muddy, and shadows should retain useful detail unless the aesthetic intentionally calls for heavier contrast.

It is also wise to test your LUT on at least five to ten different images before using it in production. Include bright scenes, dark scenes, warm light, cool light, and different subject colors. If a LUT only works on one photograph, it is not really a reusable LUT; it is just a look tailored to that file.

Organize your LUTs with clear names. Instead of naming a file Final LUT 3.cube, use something descriptive such as Warm Editorial Portrait 32.cube or Muted Product Neutral 64.cube. This makes your workflow faster and reduces the risk of applying the wrong style to a serious project.

Common Mistakes to Avoid

One common mistake is applying a LUT before correcting the image. If the image is underexposed or has a strong white balance problem, the LUT may exaggerate those flaws. Another mistake is treating LUT opacity as an afterthought. In many cases, reducing the opacity is the difference between a polished grade and an artificial one.

Be careful with downloaded LUT packs as well. Some are designed for video log footage, not standard photos, and may look flat, extreme, or technically incorrect in Affinity Photo. Always check whether the LUT was created for normal images, log profiles, or a particular camera workflow.

When to Use LUTs

LUTs are ideal for consistency. They are useful for wedding sets, social media campaigns, product catalogs, editorial shoots, and any project where multiple images need a unified visual identity. They are less suitable for heavy corrective work, complex retouching, or images with inconsistent lighting that require individual treatment.

A strong Affinity Photo LUT workflow combines discipline and flexibility: correct the image first, apply the LUT second, then refine the final result. When created with restraint and tested carefully, LUTs become a serious production tool rather than a shortcut. They help you preserve a recognizable style, reduce repetitive grading, and maintain visual consistency across your work.

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