---
title: CISystemToneMap
framework: coreimage
role: symbol
role_heading: Protocol
path: coreimage/cisystemtonemap
---

# CISystemToneMap

The protocol for the System Tone Map filter.

## Declaration

```swift
protocol CISystemToneMap : CIFilterProtocol
```

## Overview

Overview Apply a global tone curve to an image that reduces colors of the input image to a desired dynamic range consistent with other frameworks.

## Topics

### Instance Properties

- [displayHeadroom](coreimage/cisystemtonemap/displayheadroom.md)
- [inputImage](coreimage/cisystemtonemap/inputimage.md)
- [preferredDynamicRange](coreimage/cisystemtonemap/preferreddynamicrange.md)

## Relationships

### Inherits From

- [CIFilterProtocol](coreimage/cifilterprotocol.md)

## See Also

### Protocols

- [CIColorAbsoluteDifference](coreimage/cicolorabsolutedifference.md)
- [CIColorClamp](coreimage/cicolorclamp.md)
- [CIColorControls](coreimage/cicolorcontrols.md)
- [CIColorMatrix](coreimage/cicolormatrix.md)
- [CIColorPolynomial](coreimage/cicolorpolynomial.md)
- [CIColorThreshold](coreimage/cicolorthreshold.md)
- [CIColorThresholdOtsu](coreimage/cicolorthresholdotsu.md)
- [CIDepthToDisparity](coreimage/cidepthtodisparity.md)
- [CIDisparityToDepth](coreimage/cidisparitytodepth.md)
- [CIExposureAdjust](coreimage/ciexposureadjust.md)
- [CIGammaAdjust](coreimage/cigammaadjust.md)
- [CIHueAdjust](coreimage/cihueadjust.md)
- [CILinearToSRGBToneCurve](coreimage/cilineartosrgbtonecurve.md)
- [CISRGBToneCurveToLinear](coreimage/cisrgbtonecurvetolinear.md)
- [CITemperatureAndTint](coreimage/citemperatureandtint.md)