# Unimodal Calibration

* To utilize **Unimodal** CameraSnap, use the "Cloud" dropdown to select "None"
* Under the "Photos" dropdown it is recommended to select photos from Intervals (or from "Active Photos" if only photos within intervals are active)
* The screenshot below shows recommended unimodal calibration settings
  * Under the "Implementation dropdown, "ORB" or "SIFT" is recommended
  * For "Max image width for feature detection" it is recommended to input a value 50% of the "PixleCount" width of your sensor (found under the Camera settings "Calibration" tab). 
    * If the result from 50% of the width is undesirable, try other iterations ranging from 25%-80% of the width
* Click "OK" 

![Unimodal CameraSnap](/files/-M_XIa74XqcoH5AZzu7T)

* After the process has finished, the camera calibration parameters found under the Camera settings "[Calibration](https://docs.phoenixlidar.com/lidarmill-desktop/user-interface/windows/project-management-window/cameras/cam-x#calibration)" tab will be automatically populated with the newly calibrated values. 
* The [.plp will need to be saved ](https://docs.phoenixlidar.com/lidarmill-desktop/user-interface/toolbars/data-file#save-project)after CameraSnap to write the new camera calibration values to the project file.  


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