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Essentially LUTs work the color space translations. And these can be technical and creative purposes. For example, we have a project originally designed for the TV … Our project is calibrated REC709-encoded RGB. Producers decide to make an exit to the cinema. It will be prepared by DCP (Digital Cinema Package) which is governed by a different color space: DCI-P3 *-encoded XYZ. Essentially, if you take the REC709 version that this on a movie projector, the DCI standards, the colors will be a little décontrastées, desaturated and a few green. It is therefore necessary to convert the color space using a LUT. In sum, this LUT convert the color temperature, the new coordinates of the color space, gamma and encoding colors from RGB to XYZ.
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