# Optitrack Recalibration Recalibration can be done if some cameras have shifted slightly or a new camera is added into an already calibrated system. This is a tool to provide a faster method to calibrate a system based on the assumption that the majority of the system is still in a good state. * Active Points – using some active markers recalibrate the system * Rigid Body – using a rigid body of markers to recalibrate the system * Wand – using a traditional wand to recalibrate the system. The distance between the markers on the wand can be adjusted * Wand Single Camera – using a traditional wand to add a new camera into the system or reclibrate a single camera that has been completely moved. Choose a target optitrack camera in this tool as the known camera thas is new / moved camera, and the rest of the cameras in the optitrack volume are treated to be reference cameras The process of recalibration is similar to a new calibration. The minimum number of valid frames are lower than that of a new calibration process. --- # 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://stage-precision.gitbook.io/grid/optitrack/optitrack-volume/optitrack-recalibration.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.