> For the complete documentation index, see [llms.txt](https://support.skylum.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.skylum.com/luminar-for-web/how-to-use-luminar-for-web/editing-tools/develop/light.md).

# Light

The **Light** tool gives you precise control over the brightness and tonal balance of your photo. Use it to correct exposure, recover details in bright or dark areas, and create a more balanced look.

{% embed url="<https://app.arcade.software/share/uY3VH8uaoq9CAjOabwzx>" %}

**How to Use:** Select the Light tool and adjust the sliders to fine-tune different tonal areas of your photo. Each setting works independently, giving you precise control over the final result.

* **Exposure.** Adjusts the overall brightness of the photo. Move the slider to the right to brighten the image or to the left to darken it.
* **Contrast.** Controls the difference between light and dark areas. Increase it for a more defined, punchy look, or decrease it for a softer, more balanced appearance.
* **Highlights.** Controls the brightness of the lightest areas. Decrease the value to recover detail in bright areas, or increase it to make highlights brighter.
* **Shadows.** Controls the brightness of the darker areas. Increase the value to reveal more detail in shadows, or decrease it to deepen them.
* **Whites.** Adjusts the brightest tones and helps set the photo's white point. Increase the value for brighter whites or decrease it for a more subdued result.
* **Blacks.** Adjusts the darkest tones and helps set the photo's black point. Decrease the value for deeper blacks or increase it to reveal more detail in dark areas.

**When to Use:** Ideal for correcting exposure and lighting imbalances, recovering details in highlights and shadows, or adding more depth and contrast to a flat-looking photo.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://support.skylum.com/luminar-for-web/how-to-use-luminar-for-web/editing-tools/develop/light.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
