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# AVCaptureAutoExposureBracketedStillImageSettings

A configuration for defining bracketed photo captures in terms of bias relative to automatic exposure.

```
class AVCaptureAutoExposureBracketedStillImageSettings
```

## Overview

An [`AVCaptureAutoExposureBracketedStillImageSettings`](/documentation/AVFoundation/AVCaptureAutoExposureBracketedStillImageSettings) instance defines the exposure target bias setting that should be applied to one image in a bracket. An array of `AVCaptureAutoExposureBracketedStillImageSettings` objects is passed to `captureStillImageBracketAsynchronouslyFromConnection:withSettingsArray:completionHandler:` to specify the bracketing.

The minimum and maximum exposure target bias are properties of the [`AVCaptureDevice`](/documentation/AVFoundation/AVCaptureDevice) instance supplying data to an [`AVCaptureStillImageOutput`](/documentation/AVFoundation/AVCaptureStillImageOutput) instance. If you wish to leave [`exposureTargetBias`](/documentation/AVFoundation/AVCaptureAutoExposureBracketedStillImageSettings/exposureTargetBias) unchanged for this bracketed still image, you may pass the value `AVCaptureExposureTargetBiasCurrent`.

## Topics

### Creating an auto exposure settings instance

[`+  autoExposureSettingsWithExposureTargetBias:`](/documentation/AVFoundation/AVCaptureAutoExposureBracketedStillImageSettings/autoExposureSettings(exposureTargetBias:))

Creates an `AVCaptureAutoExposureBracketedStillImageSettings` using the specified exposure target bias.

### Getting the exposure target bias

[`exposureTargetBias`](/documentation/AVFoundation/AVCaptureAutoExposureBracketedStillImageSettings/exposureTargetBias)

The exposure bias for the auto exposure bracketed settings

## Relationships

### Conforms To

[`Equatable`](/documentation/Swift/Equatable)

[`Hashable`](/documentation/Swift/Hashable)

[`CVarArg`](/documentation/Swift/CVarArg)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

### Inherits From

[`AVCaptureBracketedStillImageSettings`](/documentation/AVFoundation/AVCaptureBracketedStillImageSettings)

---

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