What is a LUT? The "Filter" of the Pro World
DefinitionA mathematical formula for swapping colors.
1The Simple Explanation
A LUT is a simple conversion chart. It says 'Input Red -> Output Orange'. It allows you to apply complex color grades instantly to an entire video or photo set.
2Technical Deep Dive
3D LUTs map RGB values to new RGB values in a 3D coordinate space/cube. They are standard in color grading workflows (using .cube files).
Common Misconceptions
Myth: LUTs fix bad lighting. Fact: LUTs only change color. They cannot fix exposure or composition. Garbage in, garbage out.