Levels
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Levels is a Colour effect.
What it does
Section titled “What it does”Levels lets you adjust the black/white point and gamma through a UI, or adjust values directly. You can adjust these values per channel, including alpha.
Parameters
Section titled “Parameters”| Parameter | Control | Range | Default | Unit |
|---|---|---|---|---|
| Master › Input black | Slider | 0 to 1; any value by typing | 0 | - |
| Master › Input white | Slider | 0 to 1; any value by typing | 1 | - |
| Master › Gamma | Slider | 0.1 to 4; down to 0.01 and higher | 1 | - |
| Master › Output black | Slider | 0 to 1; any value by typing | 0 | - |
| Master › Output white | Slider | 0 to 1; any value by typing | 1 | - |
| Red › Input black | Slider | 0 to 1; any value by typing | 0 | - |
| Red › Input white | Slider | 0 to 1; any value by typing | 1 | - |
| Red › Gamma | Slider | 0.1 to 4; down to 0.01 and higher | 1 | - |
| Red › Output black | Slider | 0 to 1; any value by typing | 0 | - |
| Red › Output white | Slider | 0 to 1; any value by typing | 1 | - |
| Green › Input black | Slider | 0 to 1; any value by typing | 0 | - |
| Green › Input white | Slider | 0 to 1; any value by typing | 1 | - |
| Green › Gamma | Slider | 0.1 to 4; down to 0.01 and higher | 1 | - |
| Green › Output black | Slider | 0 to 1; any value by typing | 0 | - |
| Green › Output white | Slider | 0 to 1; any value by typing | 1 | - |
| Blue › Input black | Slider | 0 to 1; any value by typing | 0 | - |
| Blue › Input white | Slider | 0 to 1; any value by typing | 1 | - |
| Blue › Gamma | Slider | 0.1 to 4; down to 0.01 and higher | 1 | - |
| Blue › Output black | Slider | 0 to 1; any value by typing | 0 | - |
| Blue › Output white | Slider | 0 to 1; any value by typing | 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:
- Master groups Input black, Input white, Gamma, Output black, Output white.
- Red groups Input black, Input white, Gamma, Output black, Output white, and starts closed.
- Green groups Input black, Input white, Gamma, Output black, Output white, and starts closed.
- Blue groups Input black, Input white, Gamma, Output black, Output white, and starts closed.
- Matte is an input to an effect, scaling the strength. Invert inverts the mattes for calculating strength.
What each control does
Section titled “What each control does”- Input black: the input value that comes out as Output black. Raise it to crush blacks.
- Input white: the input value that comes out as Output white. Lower it to blow out highlights.
- Gamma: same as Gamma.
- Output black and Output white. Raising Output black raises the black level; lowering Output white reduces the white brightness.
- Master applies to all three channels, while Red, Green and Blue apply to individual channels.
- 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.