# Iris

Iris is LightAct’s computer vision technology. It consists of one or several *Power over Ethernet* machine vision cameras that have been pre-calibrated by LightAct. You can use Iris to calibrate your projectors faster and much more accurately.

The general workflow is this**:**

### Optional step: IrisVirtual

{% content-ref url="/pages/T7V6TJp9dDyLPrsUgXrz" %}
[IrisVirtual](/projection-mapping/iris/irisvirtual.md)
{% endcontent-ref %}

Before purchasing Iris cameras, you can run **IrisVirtual**. IrisVirtual allows you to determine the number of Iris cameras you will need for your project as well as their location, rotation and lens type.

### Step 1: Setting up Iris Device Node

{% content-ref url="/pages/PMBuIwrwg1sA4Nvhx2j9" %}
[Setting up Iris Device Node](/projection-mapping/iris/setting-up-iris-device-node.md)
{% endcontent-ref %}

Once you have purchased your Iris cameras and have them connected to the network, you need to create **Iris device** node and connect it with the physical Iris camera on the network. Repeat this process if you have several cameras on the network.

### Step 3: Adjusting Focus

{% content-ref url="/pages/Mt2W3QTM0aqI5Q466M2m" %}
[Adjusting Focus](/projection-mapping/iris/adjusting-focus.md)
{% endcontent-ref %}

Make sure all the cameras have a clear and sharp view of projection object. **Adjust the focus ring** on the cameras if necessary and parameters of the Iris device nodes.

### Step 4: Adding and Calibrating Iris Camera in Viewport

{% content-ref url="/pages/rr8YEiOlg97yVHg2s8M2" %}
[Adding and manually calibrating Iris camera](/projection-mapping/iris/adding-and-calibrating-iris-camera.md)
{% endcontent-ref %}

Create **Iris camera in the viewport** and map it with the Iris device node you created in step 1. Map the 3D models of your projection objects to Iris camera(s).

### Step 5: Calibrate Projectors

{% content-ref url="/pages/7qX4hPbo7gZR8nN3vewX" %}
[Calibrating projectors using Iris](/projection-mapping/iris/calibrating-projectors-using-iris.md)
{% endcontent-ref %}

Once the camera is calibrated, you can use it to calibrate all the projectors.


---

# Agent Instructions: Querying This Documentation

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

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.lightact.com/projection-mapping/iris.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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.