Documentation
Luminance
VFX Loom 1.0 reference for the Luminance node.
Color
processing.luminance 
Overview
Converts RGB to grayscale with a selectable channel method.
Luminance uses Rec.709 weighting; Average uses arithmetic mean; Maximum selects the largest channel. RGB output channels are equal; Preserve Alpha controls output coverage.
- Category
- Color
- Internal ID
processing.luminance- Version
- VFX Loom 1.0
Inputs
| Input | Type | Required | Default | Meaning |
|---|---|---|---|---|
| in | Image | Required | — | See the overview for the node's documented behavior. |
Properties
| Property | Type | Default | Animatable | Range / options | Effect |
|---|---|---|---|---|---|
| Method | Enum | Luminance | Not declared | Luminance · Average · Maximum | Selects the method behavior; each option changes the operation described in the overview. |
| Preserve Alpha | Bool | true | Not declared | — | Local control documented by the production node behavior. |
Outputs
| Output | Type | Meaning |
|---|---|---|
| out | Image | The production node output described by the overview. |
Usage
In practice
- Use Luminance when the graph needs Converts RGB to grayscale with a selectable channel method.
- Luminance uses Rec.709 weighting; Average uses arithmetic mean; Maximum selects the largest channel. RGB output channels are equal; Preserve Alpha controls output coverage.
- Use it after a source or scalar field, then send the adjusted image or colour value to a downstream composite or material stage.