---
title: kColorSyncConversionParamCurve0
framework: colorsync
role: symbol
role_heading: Global Variable
platforms: [iOS 16.0+, iPadOS 16.0+, Mac Catalyst 13.0+, macOS 10.13+, tvOS 16.0+, visionOS 1.0+, watchOS 9.0+]
path: colorsync/kcolorsyncconversionparamcurve0
---

# kColorSyncConversionParamCurve0

A key for a parametric tone rendering curve of type 0, represented as a CFArray of seven Float32 CFNumbers.

## Declaration

```swift
var kColorSyncConversionParamCurve0: Unmanaged<CFString>!
```

## See Also

### Reading curves and matrices

- [kColorSyncConversionParamCurve1](colorsync/kcolorsyncconversionparamcurve1.md)
- [kColorSyncConversionParamCurve2](colorsync/kcolorsyncconversionparamcurve2.md)
- [kColorSyncConversionParamCurve3](colorsync/kcolorsyncconversionparamcurve3.md)
- [kColorSyncConversionParamCurve4](colorsync/kcolorsyncconversionparamcurve4.md)
- [kColorSyncConversionMatrix](colorsync/kcolorsyncconversionmatrix.md)