LUT (Look Up Table)

mathematical transform that maps input color values to output color values, used throughout the post pipeline for both technical conversion and creative look development. Technical LUTs (like a Rec.709 conversion LUT) transform log-encoded camera footage into a standard viewing color space so dailies look natural. Creative LUTs apply a specific aesthetic look—a film stock emulation, a desaturated thriller feel, or a warm romantic palette. In the Frame.io workflow model, LUTs are established during capture by the DIT, carried through editorial as viewing transforms, and handed off to the colorist as a starting point for the final grade. LUTs can be 1D (affecting only luminance) or 3D (affecting luminance and color simultaneously). They are non-destructive metadata applied on top of the source image.