lookup table (LUT)

A lookup table (LUT) converts a set of encoded values to a different set of values for display. Compressor supports camera and creative LUTs. A camera LUT converts camera-encoded data from a non-linear log curve—which allocates more dynamic range to light levels where the human eye is more sensitive—to a color space that allows them to be displayed properly. Camera raw video is typically stored in a log color space using a proprietary curve specifically optimized to a camera’s light sensor, with metadata indicating the name and model of the source camera. A creative LUT is used to give video a specific look.