# Calibration best practices

## Calibration board
The board used for cameras calibration should be large enough to take a significant portion of the camera views during calibration. A board size of at least A1 paper is recommended.

The board should be pasted on a flat, rigid surface that does not bend significantly during calibration.

## Calibration procedure
At minimum, the board should be seen by all participating cameras during calibration. As cameras are detected, they will be placed on the 3D Viewer and you can check that they all land in the expected positions.

An easy way to see if the cameras calibration is accurate, is to perform mocap and look at the "Camera views". The projected 3D skeleton should land near or on top of the skeleton detected in each camera.

After calibration, the cameras should be stay in rigidly in place. In case of deviations, it is best to repeat the calibration procedure.