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# noiseReductionAmount

A key for the amount to reduce noise in the image.

```
static let noiseReductionAmount: CIRAWFilterOption
```

## Discussion

The associated value must be an <doc://com.apple.documentation/documentation/Foundation/NSNumber> object that specifies a floating-point value between `0.0` and `1.0`. The value has no effect if the image used for initialization is not RAW.

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