# systemRecommendedExposureBiasRange The system’s recommended exposure bias range for this device format. ``` @nonobjc var systemRecommendedExposureBiasRange: ClosedRange? { get } ``` ## Discussion Use this value to create a slider in your app’s user interface that controls a device’s exposure bias within a system-recommended range. When a recommendation isn’t available, this property returns `nil`. > Note: > The framework uses this value to define the range of an ``doc://com.apple.avfoundation/documentation/AVFoundation/AVCaptureSystemExposureBiasSlider`` control. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)