> For the complete documentation index, see [llms.txt](https://docs.viesus.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.viesus.com/features/features/grain-addition.md).

# Grain Addition

Adds subtle film grain to reduce banding and posterisation in smooth gradient areas. Applied at the end of the pipeline.

## Example

{% columns %}
{% column %}
**Before**

<figure><img src="https://919968377-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FG3eQlcnlDKtn9yl3mxsx%2Fuploads%2Fgit-blob-2aac38d3a6989f640b75c2aeecf11934ec13a3c3%2Fplaceholder.svg?alt=media" alt="Before — Grain Addition"><figcaption></figcaption></figure>
{% endcolumn %}

{% column %}
**After**

<figure><img src="https://919968377-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FG3eQlcnlDKtn9yl3mxsx%2Fuploads%2Fgit-blob-2aac38d3a6989f640b75c2aeecf11934ec13a3c3%2Fplaceholder.svg?alt=media" alt="After — Grain Addition"><figcaption></figcaption></figure>
{% endcolumn %}
{% endcolumns %}

## Parameters

<table><thead><tr><th width="200">Parameter</th><th width="100">Section</th><th width="95">Value</th><th width="95">Default</th><th>Description</th></tr></thead><tbody><tr><td><code>GAmode</code></td><td><code>Config</code></td><td>0, 1</td><td>0</td><td>Mode selection (see below)</td></tr><tr><td><code>gastrength</code></td><td><code>Gpars</code></td><td>0.0 – 1.0</td><td>0.5</td><td>Grain strength</td></tr></tbody></table>

## Modes

| Value           | Description               |
| --------------- | ------------------------- |
| **0** — Off     | No grain added            |
| **1** — Enabled | Applies subtle film grain |

{% hint style="success" %}
**Recommended:** Leave off for most images. Enable (mode 1, strength 0.5) when you see banding or posterisation in skies or other smooth gradients.
{% endhint %}


---

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