Technical Guide (N-Log Editing Edition)

16
LUTs: A Primer
About LUT
A “LUT”, or “lookup table”, is an array of preselected values
used in video color-correction to map colors from the orig-
inal input footage to the desired colors in the nal output.
Color correction is performed by looking up input colors
and assigning them new RGB values based on the data in
the table.
A lookup table that treats each of the red, green, and blue
channels separately is a “1D LUT”, which cannot be used to
correct saturation or hue. Such corrections require a “3D
LUT”, in which each combined RGB value maps to a single
combined value in the table.
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