# NRCameraRig ### Introduction The NRSDK contains the **NRCameraRig** prefab that provides the transform object to represent the tracking space. It contains 4 game object to fine-tune the relationship between the head tracking reference frame and your world. Under the NRCameraRig, you will find a CenterCamera, which is the main Unity camera, and two camera game objects for each eye. ### How to Add NRCameraRig in the Scene NRCameraRig is a replacement for Unity’s main camera, which means you can safely delete Unity’s main camera from the Hierarchy tab. 1. From the **Hierarchy** tab, right-click **Main Camera**, and click **Delete**. 2. In the **Project** tab, expand the **Assets** > **NRSDK** > **Prefabs** folder, and drag and drop the **NRCameraRig** prefab into the scene. You can also drag and drop it in the **Hierarchy** tab. ### Configure Settings There is just one main script attached to the NRCameraRig prefab, NRHMDPoseTracker.cs, which provides settings for the camera, display, tracking, quality, and performance of your app. To begin with settings, in the **Hierarchy** tab, select **NRCameraRig**, and in the **Inspector** tab, review the following settings: **NRHMD Pose Tracker** * **Tracking Type**: There are four types of tracking and the special one ***Tracking 0 Dof Stable*** enables the display's tag-along behavior depending on the current view, which is very helpful for image stabilization. * **Tracking Mode Auto Adaption:** In **NRProjectConfig**, you can choose the target devices of your app, and if you select this option, the Tracking Type will automatically be compatible with your target device. * **Use Relative:** Select this option to update the local transform of NRCameraRig, which means if there is a parent node of NRCameraRig, you can change its transform to change the NRCameraRig. On the contrary, the Global Transform of NRCameraRig will be updated and won't be affected by its parent node if this option is unselected. --- # 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://xreal.gitbook.io/nrsdk/development/input-and-camera/nrcamerarig.md?ask= ``` 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.