Before using LUTs, you should calibrate your monitor. Monitor LUTs affect the way images are displayed on the monitor without altering the image data. If you import logarithmic film scans without conversion, you need to use a monitor LUT to display the images correctly. Even when you apply a LUT to film scans on import, you may still require a monitor LUT to reproduce the gamma qualities of film—see Chapter 4, Lustre Color Calibrator in the Lustre Color Management User's Guide on the Composite Web Portal.