Gamma
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Gamma is a Colour effect.
What it does
Section titled “What it does”Adjust the gamma of the input, which effectively adjusts the curve to bend around mid-grey and leaves whites and blacks untouched.
Parameters
Section titled “Parameters”| Parameter | Control | Range | Default | Unit |
|---|---|---|---|---|
| Gamma | Slider | 0.1 to 4; down to 0.01 and higher | 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:
- Matte pulls Gamma toward 1 per pixel: white applies the full Gamma, grey a gentler curve, black none. Invert reads that matte inverted.
What each control does
Section titled “What each control does”- Gamma is the amount to bend the mid-tone by.
- 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.