Glow
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Glow is a Stylise effect.
What it does
Section titled “What it does”Parts of the image brighter than the threshold emit a glow.
Parameters
Section titled “Parameters”| Parameter | Control | Range | Default | Unit |
|---|---|---|---|---|
| Threshold | Slider | 0 to 4; higher | 0.8 | - |
| Softness | Slider | 0 to 1 | 0.5 | - |
| Radius | Slider | 0 to 200; higher | 24 | Pixels at composition size |
| Falloff | Slider | 0 to 8; higher | 0 | - |
| Amount | Slider | 0 to 100 | 0 | Per cent |
| Angle | Slider | -180 to 180; down to -3600 and up to 3600 | 0 | Degrees |
| Wavelength | Checkbox | On or off | Off | - |
| Samples | Slider | 3 to 64 | 16 | - |
| Colour 1 | Colour | Each channel 0 to 1, scene-linear | 1, 0, 0, 1 | - |
| Colour 2 | Colour | Each channel 0 to 1, scene-linear | 0, 1, 0, 1 | - |
| Colour 3 | Colour | Each channel 0 to 1, scene-linear | 0, 0, 1, 1 | - |
| Intensity | Slider | 0 to 10; higher | 1 | - |
| Tint | Colour | Each channel 0 to 4, scene-linear | 1, 1, 1, 1 | - |
| Mix | Slider | 0 to 100 | 100 | Per cent |
| Blend | Dropdown | Normal · Darken · Multiply · Colour burn · Linear burn · Darker colour · Add · Lighten · Screen · Colour dodge · Lighter colour · Overlay · Soft light · Hard light · Linear light · Vivid light · Pin light · Hard mix · Difference · Exclusion · Subtract · Divide · Hue · Saturation · Colour · Luminosity | Normal | - |
| Matte | Layer | Any layer in the composition | None | - |
| Invert | Checkbox | On or off | Off | - |
| Channel | Dropdown | Luminance · Alpha · Red · Green · Blue | Luminance | - |
In the Effect Controls panel:
- Chromatic aberration groups Amount, Angle, Wavelength, Samples, Colour 1, Colour 2, Colour 3, and starts closed.
- Matte gates which pixels may seed the halo, before the bright pass: light only escapes from where the matte is bright, but it still spills outward across dark matte — which fading the finished glow cannot do. Invert reads that matte inverted.
What each control does
Section titled “What each control does”- Threshold: how bright a pixel must be before it blooms.
- Softness: how abruptly a pixel starts to bloom as it crosses the threshold.
- Radius: how far the bloom spreads.
- Falloff: at 0 the bloom is a soft gaussian. Above 0 it falls away from a bright core and keeps going, and higher values send more of the light further out.
- Amount: how far the bloom’s colours are pulled apart.
- Angle: the direction they are pulled apart in.
- Wavelength spreads the bloom’s colours as one gradient instead of three taps.
- Samples is how many taps fill the gradient while Wavelength is on.
- Colour 1, Colour 2 and Colour 3 tint the three taps, the first one way along Angle and the third the other.
- Intensity: how intense the bloom is.
- Tint: the colour of the bloom. Neutral keeps each highlight’s own colour.
- Mix: how much of the result replaces the original.
- Matte and Invert drive the strength of the effect from another layer’s brightness; see Effects.