Notch Notch Manual 0.9.23
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Tone Map

Tone Map

Apply a tone mapping process to an image.


Method #

This node applies a tone mapping process to an image, which often used to convert high dynamic range images to a colour space suitable for output; to convert linear space images to gamma 2.2 for output; or to balance brightness levels across an image and adapt them over time, to mimic the behaviour of camera lenses and eyes. A number of standard tone mapping operators are supported.


These properties control the core behaviours of the node.

Tone Map ModeThe method used for tone mapping.
  • Direct (Pass Throguh Linear) : Leave the images unchanged.
  • Linear To Gamma : Convert from linear colour space to gamma 2.2.
  • Reinhard : Perform tonemapping with the reinhard operator.
  • Filmic : Perform tonemapping with the filmic operator.
  • Max White : Tone map the image by scaling down brightness by the brightest pixel value.
  • Linear-Camera : Perform tone mapping from linear space using a camera exposure model using the parameter controls.
  • AutoLinear-Camera : Perform tone mapping from linear space using a camera exposure model which automatically determines the parameters based on the input image and exposure setting.
  • Preserve Contrast : Perform tone mapping using an operator that attempts to preserve contrast in the image.
Adaption RateThe rate of adaption when moving from bright to dark areas and vice versa, used to mimic real eye and camera behaviours. when moving from a dark to a light area eyes take time to adapt, so at first the light area appears excessively bright.
ExposureThe exposure, for camera-based operators.
ISO (Sensitivity)The iso, for camera-based operators.
F/stopThe f/stop, for camera-based operators.
GammaThe desired gamma of the target output image - usually 2.2.


NameDescriptionTypical Input
ActiveEnables or disables the effect. Disabling the effect means it will no longer compute, so disabling a node when not in use can improve performance.Envelope Modifier