Mathematical transformation table that maps input colors to output colors, for color correction and grading.
Definition
A LUT (Look Up Table) is a mathematical transformation table that maps input color values to output color values. LUTs are used for color correction, grading, and creative looks.
LUT Types
| Type | Dimension | Application |
|---|---|---|
| 1D LUT | Single-Axis | Brightness, Contrast |
| 3D LUT | RGB Cube | Complex Color Transformations |
| Technical LUT | Conversion | Log → Rec.709 |
| Creative LUT | Look | Film Looks, Moods |
Common LUT Sizes
- 17x17x17: Fast, but less precise
- 33x33x33: Standard for most applications
- 65x65x65: Highest precision for critical work
Workflow
- On-Set: Preview LUT on monitor for Log footage
- Offline: Rough LUT for editing preview
- Grading: Create custom LUTs as a base
- Delivery: Output LUT for final delivery
Software
LUTs are created and applied in:
- DaVinci Resolve
- Adobe Premiere Pro
- Final Cut Pro
- Baselight
Practical Tips
- Use manufacturer LUTs for technical conversion
- Develop custom LUTs for individual looks
- Control LUT strength in post (often 50-80% is enough)
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