Processing and Formatting Effects > Colour Management >

# Tone Mapping in the LUT Editor

From the Desktop, you can use the LUT Editor to apply tone mapping to an image high dynamic range image.

Tone-mapping is the process of converting scene-linear media to video media. The PhotoMap tool is inspired by photographic-style tone reproduction. When all controls are set to 0, PhotoMap applies the default tone-mapping curve. By adjusting the controls you can customize the curve to meet the needs of a specific image.

1. Access the LUT Editor. See Accessing the LUT Editor.
2. From the Conversion LUT Type box, select PhotoMap.

   The PhotoMap controls appear. Unless a preset has been selected, all values are set to 0 by default.

   Invert button
     Enable to apply the inverse of the tone-mapping parameters function to convert video media to scene-linear media.
   Exposure fields
     Displays the value that lightens or darkens the image by scaling the scene-linear values. An Exposure of +1 brightens by one f-stop, an Exposure of -1 darkens by one f-stop.
   Highlight Detail fields

     Adjust the contrast in the very light part of the highlight region. Useful for controlling highlight clipping.

   Highlight Contrast fields
     Adjust the overall contrast in the bright region of the tone curve.
   Contrast fields
     Adjust the overall contrast of the image.
   Shadow Contrast fields

     Adjust the contrast in the dark region of the tone curve. Useful for compensating for stray light during capture.

   Shadow Detail fields
     Adjust contrast in the very dark part of the shadow region. Useful for controlling the image tone that maps to zero code value.
   Encoding box
     Select the type of gamma encoding to apply to the tone-mapped image. Choose the value that corresponds to the response of the display device that will be used to view the video media.