All effects and presets

Effect

Contrast

Push or pull contrast around a pivot, with optional gamma shaping.

Contrast is the distance between dark and light. Painters staged it with chiaroscuro; photographers with exposure and paper grade; digital tools with curves and pivots.

A pivot-based contrast control expands or compresses around a chosen mid grey. Gamma shaping can keep the move from looking like a blunt stretch.

Contrast example
Example

Properties

  • Contrast Strength

    contrast adjustment

    Range
    -2 to 2
    Default
    0

  • Pivot Point

    mean brightness

    Range
    0 to 1
    Default
    0.5

  • Output Mapping

    gamut mapping

    Range
    0 to 1
    Default
    1

  • Gamma

    working gamma

    Range
    0.2 to 5
    Default
    2.2

Command line

Requires Rethings Pro. Install the tool from Rethings → Install Command Line Tool… 

rethings apply --effect contrast --set contrast_strength=0 --set pivot_point=0.5 -i input.jpg -o output.png

Gallery

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