---
title: kCIInputBiasKey
framework: coreimage
role: symbol
role_heading: Global Variable
path: coreimage/kciinputbiaskey
---

# kCIInputBiasKey

Simple bias value.

## Declaration

```swift
let kCIInputBiasKey: String
```

## Discussion

Discussion A key for the simple bias value to use along with the exposure adjustment (kCIInputEVKey). The associated value must be an NSNumber object that specifies floating-point value. The value has no effect if the image used for initialization is not RAW.

## See Also

### Constants

- [decoderVersion](coreimage/cirawfilteroption/decoderversion.md)
- [supportedDecoderVersions](coreimage/cirawfilteroption/supporteddecoderversions.md)
- [boostAmount](coreimage/cirawfilteroption/boostamount.md)
- [neutralChromaticityX](coreimage/cirawfilteroption/neutralchromaticityx.md)
- [neutralChromaticityY](coreimage/cirawfilteroption/neutralchromaticityy.md)
- [neutralTemperature](coreimage/cirawfilteroption/neutraltemperature.md)
- [neutralTint](coreimage/cirawfilteroption/neutraltint.md)
- [neutralLocation](coreimage/cirawfilteroption/neutrallocation.md)
- [scaleFactor](coreimage/cirawfilteroption/scalefactor.md)
- [allowDraftMode](coreimage/cirawfilteroption/allowdraftmode.md)
- [ignoreImageOrientation](coreimage/cirawfilteroption/ignoreimageorientation.md)
- [imageOrientation](coreimage/cirawfilteroption/imageorientation.md)
- [enableSharpening](coreimage/cirawfilteroption/enablesharpening.md)
- [enableChromaticNoiseTracking](coreimage/cirawfilteroption/enablechromaticnoisetracking.md)
- [noiseReductionAmount](coreimage/cirawfilteroption/noisereductionamount.md)