# Projection Study

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If you are using a multi-server setup, please note that *Projection Study* can only be run on the *Primary* machine.
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{% hint style="info" %}
**Good to know**: for best results the Render mode of your projection object should be set tu *Unshaded*.
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*Projection Study* is a feature which helps you determine the number of projectors your project might need, along with their location, orientation, resolution and brightness.

1. Place all objects you would like to project content on into the *Viewport*.
2. Add as many projectors to the *Viewport* as you estimate would cover your project's needs. Place the projectors in appropriate locations and change their **Properties** as you consider fitting.
3. Map the objects you have placed on the *Viewport* to the projectors.

In our case, we have a single 3D car model which is mapped on 5 separate projectors.

<figure><img src="https://3312042618-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9sVaJpWJhPbmscipukhh%2Fuploads%2Fgit-blob-8d56e972451759f8e6e953efbf0f137907d26f8f%2F2022-12-23-13-11-05.png?alt=media" alt=""><figcaption></figcaption></figure>

To use this feature, click on **Tools** in the *Top Bar* and choose **Projection Study**.

<div align="left"><img src="https://3312042618-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9sVaJpWJhPbmscipukhh%2Fuploads%2Fgit-blob-6a26c47ddf8ea0941a9cddb04d16257a03065f31%2F090424-ToolTopBar.png?alt=media" alt=""></div>

A window will appear, where you can select the projectors and objects you would like analyze.

<figure><img src="https://3312042618-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9sVaJpWJhPbmscipukhh%2Fuploads%2Fgit-blob-c2da5cc967b0996ca92c3a6e6605451b4c1e546d%2FProjectionStudyEnable.png?alt=media" alt=""><figcaption></figcaption></figure>

*Projection Study* has four modes which you can find in the *Setup* section:

* **Projected content** shows how the projection is going to look like.
* **Shadow analysis** helps you determine which areas of your model are not getting any light.
* In **Illuminance** mode you can adjust the lux scale so it fits your project setup. This mode helps you analyse the required number and lumen output of the projectors.
* **Pixel size** is very useful for detecting pixel stretching. You can do this through observing the pixel grid rendered on all of your projected objects.

Select the wanted mode and click on the **Enable** button.

<figure><img src="https://3312042618-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9sVaJpWJhPbmscipukhh%2Fuploads%2Fgit-blob-618021c91136ef30598abd5ad72ce04be29738eb%2FProjectionStudyEnable1.png?alt=media" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
**Good to know**: Once you enable *Projection Study*, you should see a tag on the upper left side of the *Viewport*. In this setup, only the objects and projectors you have chosen to analyze will appear in the *Viewport*.
{% endhint %}

The other key purpose of projection studies is to analyze blending. You can blend your projectors by using [Autoblend ](https://docs.lightact.com/projection-mapping/3d-projection-mapping-workflow/autoblend)feature.

The results can be visualized in both *Projected content* and *Illuminance* modes.

<figure><img src="https://3312042618-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9sVaJpWJhPbmscipukhh%2Fuploads%2Fgit-blob-9e74401c45d942e66be98243916bac2d63b1e6db%2FAutoblendProjectionStudy.png?alt=media" alt=""><figcaption></figcaption></figure>

From this point on, the idea is to adjust the projectors' position, location, resolution or brightness to get the best possible results.