Camera calibration needs to be done once per device model, for features requiring depth estimation (e.g. [[AR-Marker|AR-Markers]]). <tabs><tab name="Prior to UBIK 4">Currently the following device models are pre-calibrated:
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* The camera matrix and distortion coefficients are now saved on the device in the Downloads folder (in the LocalState folder on the WinX client). The device name is used as the filename of the textfile, on WinX the filename is ''CalibrationResult.txt''
* Forward the calibration file to the development department.
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<tab name=" UBIK 4">
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