# Using Lens in PRISM Desktop

With the release of **PRISM Live Studio (Desktop) v4.0.3**, **PRISM Len**s can now be used in three different ways:

* **PRISM Lens**
* **PRISM Mobile**
* **Video Capture Device**

*via the Add Source menu*

***

## **Adding a PRISM Lens Source**

{% stepper %}
{% step %}
**Install the PRISM Lens app and add a PRISM Lens source via the source addition window on PRISM Desktop.**

<figure><img src="https://miro.medium.com/v2/resize:fit:1400/1*FwghZXDT7qux6EMXxbwDUg.png" alt=""><figcaption></figcaption></figure>

{% endstep %}

{% step %}
**In the PRISM Lens source properties window, select PRISM Lens 1/2/3 from the video device options.**

The selected lens will activate, and the PRISM Lens app will run hidden in the system tray.

<figure><img src="/files/CphcHLFOw2W3dHVBh25T" alt=""><figcaption></figcaption></figure>

Clicking the **"Open PRISM Lens App"** button in the PRISM Lens source properties window will display the Lens app at the top of your monitor.

The option **"Use custom audio device"** is selected by default for convenient audio capture. You may change to another device after selecting the lens.

<figure><img src="https://miro.medium.com/v2/resize:fit:1400/1*AgtlsTmuOPY_9kaBbH9nkg.png" alt=""><figcaption></figcaption></figure>
{% endstep %}
{% endstepper %}

{% hint style="info" %}
For more detailed instructions, please refer to the following guide.\
[Connecting Camera from PRISM Mobile App](/desktop/guides/sources/prism-mobile-source/connecting-camera-from-prism-mobile-app.md)
{% endhint %}

***

## **Adding a PRISM Mobile Source**

Integrating Mobile sources individually has become even easier.

By default, **Lens 3** is selected for Mobile sources, and the Lens app runs in the system tray with Lens 3 active.

When you add a Mobile source from the source addition window, a confirmation notification appears. Clicking the **"Open App"** button in the notification immediately launches the Lens app.

Complete the integration by scanning the QR code displayed in the Lens app window using the **Connect** menu on your mobile device.

<figure><img src="https://miro.medium.com/v2/resize:fit:1400/1*f9J1AgRCwnzPe0syZTE0fA.png" alt="" width="563"><figcaption></figcaption></figure>

<figure><img src="https://miro.medium.com/v2/resize:fit:1400/1*DPqKDAi2_CqI8rxiA80kEQ.png" alt="" width="563"><figcaption></figcaption></figure>

***

## **Adding a Video Capture Device Source**

You can also use Lens with the **Video Capture Device** source, which offers more advanced settings compared to Lens and Mobile sources.

However, unlike Lens and Mobile sources, the **"Use custom audio device"** option is **not selected by default** in the Video Capture Device source.\
To broadcast audio from the Lens app, you must manually enable this option.

<figure><img src="https://miro.medium.com/v2/resize:fit:1400/1*B8OjsJcUPE6lk5tG-WRQWQ.png" alt="" width="563"><figcaption></figcaption></figure>

If you encounter issues related to mobile connection, please refer to the following guide.

[Resolving PRISM Mobile Connection Issue](/lens/guides/error-solution/prism-mobile-connection/resolving-prism-mobile-connection-issue.md)

[LENS](/lens/overview.md),  [Guides](/lens/guides.md),  [Using Lens in PRISM Desktop](/lens/guides/features/using-lens-in-prism-desktop.md)


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