The LUT Cube Creator generates an image for further use with the LUT Cube Analyzer or LUT Cube Apply nodes. The output can be graded, color corrected, or modified with any tool inside and outside of Fusion. If working outside Fusion, make sure to keep the image in 32-bit floating point to preserve color accuracy.
Feeding the original LUT Cube Creator image into the LUT Cube Analyzer node results in an unaltered, or 1:1, LUT file, and nothing is displayed in the viewer.
LUT Cube Creator Node Inputs
There are no inputs on the LUT Cube Creator. The purpose of the node is to generate an image that can be used to create a LUT.
LUT Cube Creator Node Setup
The example below shows a node tree starting with a LUT Cube Creator node and going through two color adjustments. The adjusted image is then connected into a LUT Cube Analyzer that generates the LUT file.
LUT Cube Creator Node Controls Tab
The Controls tab creates a test pattern of sorts used to create a 3D LUT. The controls here determine the complexity of the pattern used to create a LUT using the LUT Cube Analyzer.
The Type menu is used to create a pattern of color cubes.
- Horizontal: Creates a long, horizontal strip representing a color cube.
- Vertical: Creates a long, vertical strip representing a color cube.
- Rect: Creates a rectangular image, as depicted below, representing a color cube.
Determines the resolution of the color cube.
Typical Size settings for color cubes are 33 (33 x 33 x 33) or 65 (65 x 65 x 65). These numbers are the samples on each side of the cube. A 33 x 33 x 33 cube has around 35,937 color samples.
LUT Cube Creator Node Settings Tab
The Settings tab in the Inspector is also duplicated in other LUT nodes. These common controls are described in detail HERE
About the Author
Justin Robinson is a Certified DaVinci Resolve, Fusion & Fairlight instructor who is known for simplifying concepts and techniques for anyone looking to learn any aspect of the video post-production workflow. Justin is the founder of JayAreTV, a training and premade asset website offering affordable and accessible video post-production education. You can follow Justin on Twitter at @JayAreTV YouTube at JayAreTV or Facebook at MrJayAreTV