> For the complete documentation index, see [llms.txt](https://guide.prismlive.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guide.prismlive.com/desktop/guides/sources/prism-lens-source/using-apply-chroma-key-and-background-removal.md).

# Using Apply Chroma Key and Background Removal

Starting from PRISM Live Studio Windows v5.1.0 and macOS v2.1.0 the **Apply Chroma Key** and **Auto Background Removal** features have been added to the PRISM Lens source properties window. 

This improvement allows VTubers and webcam users to manage their backgrounds conveniently without navigating through multiple complex steps.

***

#### Apply Chroma Key

This feature allows you to add a Chroma Key filter instantly from the source properties window.

**How to Configure:**

{% stepper %}
{% step %}
Double-click the PRISM Lens source to open the Properties window, then click the **\[Apply Chroma Key]** button at the bottom.

<figure><img src="/files/vnjewcFQ952VY30KCTVY" alt="" width="563"><figcaption></figcaption></figure>
{% endstep %}

{% step %}
Upon clicking, the **'Filters for PRISM Lens'** window will pop up with the Chroma Key filter already added.

<figure><img src="/files/GSHzfCGjODHS4XEJooZ2" alt="" width="563"><figcaption></figcaption></figure>
{% endstep %}

{% step %}
You can complete the setup by simply adjusting detailed settings such as Similarity or Smoothness.

{% endstep %}
{% endstepper %}

**How to Remove:**

* When Chroma Key is applied, the button toggles to **\[Remove Chroma Key]**.
* Clicking this button displays a confirmation alert asking, **"Remove Chroma Key?"**.
* Selecting **OK** will remove all added Chroma Key filters at once.

<figure><img src="/files/9wbERCrUHElAGPpNd7aZ" alt=""><figcaption></figcaption></figure>

***

#### Auto Background Removal

You can now remove your background with a single click in the **PRISM Lens source properties**, without needing to manually configure settings in the PRISM Lens app.

**How to Configure:**

{% stepper %}
{% step %}
Double-click the PRISM Lens source to open the Properties window, then click the **\[Auto Background Removal]** button at the bottom.

<figure><img src="/files/ZtdDu92Iy0xZ3B731Gfn" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}
Clicking this button will automatically activate the 'Remove BG' setting within the PRISM Lens app's virtual background menu.
{% endstep %}
{% endstepper %}

**How to Remove:**

* Once the effect is active, the button toggles to **\[Remove Auto Background Removal]**.
* Clicking this button displays a confirmation alert asking, **"Remove Auto Background Removal?"**.
* Selecting **OK** will change the Lens app setting back to 'Original' and the background removal effect will be disabled.

<figure><img src="/files/49a7vByHBkbLQgOrN8lO" alt=""><figcaption></figcaption></figure>

[Desktop](/desktop/overview.md), [Guides](/desktop/guides.md), [Sources](/desktop/guides/sources.md), [PRISM Lens Source](/desktop/guides/sources/prism-lens-source.md)


---

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