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Custom LUT filter in Motion

Applies a lookup table (LUT) to an image. A lookup table (LUT) is a set of data that enables a numeric transformation of pixel values to change the way an image looks.

Canvas showing effect of an applied LUT using the Custom LUT filter

A common use of LUTs is to stylize video clips with a particular “look.” Beyond just matching some objective model of exposure, you can subtly mix color to enhance the story you’re telling with your project. Color adjustments can alter the audience’s perception of the scene being played, changing a program’s mood.

Another common use of LUTs in video post-production is log conversion. Many modern cameras have a log or wide-dynamic-range recording option that provides more f-stops of exposure latitude in the image. Video footage recorded with this option initially looks “flat.” You can apply LUTs to change the appearance of log footage to a standard broadcast specification.

Adjust this filter using the parameter controls in the Filters Inspector:

  • LUT: Selects the LUT that’s applied to the layer or group. This pop-up menu has the following options:

    • None: No LUT is applied.

    • [List of available custom LUTs]: Displays a list of LUTs added using the Choose Custom LUT command (described below). Choose any LUT in this list to apply the LUT to a clip or image in the affected layer.

    • Recent: Opens a submenu with two options:

      • [LUT list]: Lists recently imported LUTs.

      • Clear Recent: Clears the list of recently imported LUTs (but doesn’t clear the list of available custom LUTs).

    • Choose Custom LUT: Opens an import window that allows you to navigate to and import a LUT. (You can import 3D LUT files with the filename extensions .cube and .mga. Motion doesn’t support 1D LUTs.)

    • Reveal in Finder: Shows the location of the current LUT in the Finder.

  • Convert: Sets the color space of the selected LUT. This parameter has two options:

    • Input: Sets the input color space of the selected LUT to Rec. 709, Rec. 2020, Rec. 2020 PQ, or Rec. 2020 HLG.

    • Output: Sets the output color space of the selected LUT to Rec. 709, Rec. 2020, Rec. 2020 PQ, or Rec. 2020 HLG.

  • Mix: Sets the percentage of the original image that’s blended with the color-corrected image.

Download this guide: PDF

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