Deband
Deband smooths visible banding in gradients — the stepped-color bands that show up in skies and smooth gradients, especially from 8-bit source material — with optional grain to mask any remaining stepping.
Parameters
| Parameter | Type | Range | Default | What it does |
|---|---|---|---|---|
| Threshold | number | 1 to 64 | 8 | Banding-detection sensitivity; only takes effect above 1. |
| Range | number | 0 to 64 | 8 | How far the debanding pass samples to smooth a band. |
| Grain | number | 0 to 64 | 0 | Adds film grain on top, useful for masking any banding the pass doesn't fully remove. |
How it works
Grain here is implemented as a separate noise pass layered on top of the deband effect, not a built-in grain parameter of the debanding algorithm itself — so cranking Grain up adds visible texture in addition to (not instead of) the smoothing.
See also
Deblock for blocky compression artifacts; Noise (Film Grain) for adding grain as a deliberate creative choice elsewhere in your stack.
Control preview
JSON structure
{
"id": "deband",
"enabled": true,
"params": {
"threshold": 8,
"range": 8,
"grain": 0
}
}