Color Management in VFX — LUT

WHAT IS LUT?

  • Technical LUT, or Neutral LUT, that is used to convert the camera native space to specific display space, like LogC to Rec.709, or REDlogFilm to DCI-P3. These LUTs are usually provided by the camera manufactures.
  • Creative LUT, which is more artistic to create a visual look or style.

1D LUT

Version 1
From 0 1
Length 4096
Components 1
{
0.0000000000e+00
1.0989011498e-03
2.1978022996e-03
3.2967033330e-03
4.3956045993e-03
5.4945056327e-03
6.5934066661e-03
7.6923076995e-03
8.7912091985e-03
9.8901102319e-03
1.0989011265e-02
1.2087912299e-02
...

3D LUT

# Alexa conversion LUT, logc2video, itu709. Full in/full out.
# created by alexalutconv (2.09)

LUT_3D_SIZE 65
0.000000 0.000000 0.000000
0.000000 0.000000 0.000000
0.000000 0.000000 0.000000
0.000000 0.000000 0.000000
0.002121 0.000000 0.000015
0.013123 0.000000 0.000095
0.024927 0.000000 0.000181
0.037641 0.000000 0.000273
0.051407 0.000000 0.000373
0.066735 0.000000 0.000489
0.082548 0.000000 0.000629
0.098897 0.000000 0.000797
0.115951 0.000000 0.001000
...

SHAPER LUT (PRELUT)

CSPLUTV100
3D

BEGIN METADATA
END METADATA

4096
0.001186 0.001189 0.001193 0.001196 0.001200 0.001203 0.001207 ...
0.000000 0.000244 0.000488 0.000733 0.000977 0.001221 0.001465 ...
4096
0.001186 0.001189 0.001193 0.001196 0.001200 0.001203 0.001207 ...
0.000000 0.000244 0.000488 0.000733 0.000977 0.001221 0.001465 ...
4096
0.001186 0.001189 0.001193 0.001196 0.001200 0.001203 0.001207 ...
0.000000 0.000244 0.000488 0.000733 0.000977 0.001221 0.001465 ...

65 65 65
0.000000 0.000000 0.000000
0.000000 0.000000 0.000000
0.003420 0.000000 0.000000
0.011150 0.000000 0.000000
0.020507 0.000000 0.000000
0.029807 0.000000 0.000000
0.038688 0.000000 0.000000
0.046986 0.000000 0.000000
0.054977 0.000000 0.000000
0.063405 0.000000 0.000000
0.072741 0.000000 0.000000
0.083196 0.000000 0.000000
0.094621 0.000000 0.000000
...

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