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ACES Transform

Lets you perform the kind of color transforms that the ACES Input Device Transform and ACES Output Device Transform parameters of the Color Management panel do, without the need to have ACEScc or ACEScct enabled.

ACES Version: When you’ve chosen one of the ACES color science options, this pop-up becomes available to let you choose which version of ACES you want to use.

Input Transform: This pop-up menu lets you choose which IDT (Input Device Transform) to use to process the image. It presents the same options that are available in the Color Management panel of the Project Settings.

Output Transform: This pop-up menu lets you choose an ODT (Output Device Transform) with which to transform the image data for monitoring on your calibrated display and when exporting a timeline in the Deliver page. It presents the same options that are available in the Color Management panel of the Project Settings.

Gamut Compress Type: This lets you choose the type of ACES Gamut compression applied to the node. Choosing either option can prevent monochromatic highly saturated light sources (LEDs, neon signs, tail lights, etc.) from clipping the gamut.


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NOTE: This plugin does ACES transforms correctly using the transforms specified by the Academy, whereas the Color Transform plugin does transforms to the ACES color space colormetrically, which is not actually correct for ACES workflows.


NOTE: This plugin does ACES transforms correctly using the transforms specified by the Academy, whereas the Color Transform plugin does transforms to the ACES color space colormetrically, which is not actually correct for ACES workflows.


NOTE: This plugin does ACES transforms correctly using the transforms specified by the Academy, whereas the Color Transform plugin does transforms to the ACES color space colormetrically, which is not actually correct for ACES workflows.

For more information about the options available in these parameters, see Chapter 9, “Data Levels, Color Management, and ACES.”


Chromatic Adaptation

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A Color category plugin that lets you precisely transform an image that has been lit or processed assuming one specific color temperature to another user-selectable color temperature. This transformation alters the appearance of all colors in the image as perceived by the human vision system in the same way that a new illuminant would, whether that illuminant is a light in the environment being recorded or the color temperature of a display on which the image is shown. This plugin is useful for performing specific color temperature transformations as part of color management workflows or for setting up precise color temperature adjustments as part of a creative grade.

Method: The Method pop-up menu provides a variety of different transform methods to choose from, defaulting to CAT02. Each option in the Method pop-up menu uses different measurement datasets to create individual CAT matrixes to guide this transformation. As a result, each method prioritizes different levels of accuracy for different sets of colors. For example:

— CAT02 has a non-linear component that compensates for the tendency of extremely saturated blues to go purple, a typical weakness of other methods. It usually gives the best result for the widest variety of measured data sets and works best for emissive sources (displays) and dim viewing environments.