> For the complete documentation index, see [llms.txt](https://astra-image.gitbook.io/astra-image-6.0/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://astra-image.gitbook.io/astra-image-6.0/adjustment-tools/light.md).

# Light

The Light adjustments lets you change the image so that it appears brighter or darker.

<div align="left"><figure><img src="https://642819126-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLBlqtJBdFJ4rkIvhdwcZ%2Fuploads%2FygElygU6IP5rSbRO0tLA%2Flight.png?alt=media&amp;token=e9d4ed6e-f7fa-4f38-83b1-afdb9cfbe409" alt="The Light adjustment panel."><figcaption><p>The Light adjustment panel.</p></figcaption></figure></div>

**Brightness**\
This is a simple adjustment that can change the brightness of an image using a sigmoid function.

**Contrast**\
Increase or decrease the contrast of an image using a sigmoid function.

**Exposure**\
Adjust the apparent exposure of an image, making it either brighter or darker.

**Exposure Offset**\
Add or subtract a constant from the exposure of the image.

**Gamma**\
Adjust the gamma of an image making it brighter or darker.