# Focus Configure the automatic focus behavior of a camera, or manually set its lens position. ## Topics ### Configuring automatic focus [`- isFocusModeSupported:`](/documentation/AVFoundation/AVCaptureDevice/isFocusModeSupported(_:)) Returns a Boolean value that indicates whether the device supports the specified focus mode. [`focusMode`](/documentation/AVFoundation/AVCaptureDevice/focusMode-swift.property) The capture device’s focus mode. [`FocusMode`](/documentation/AVFoundation/AVCaptureDevice/FocusMode-swift.enum) Constants to specify the focus mode of a capture device. [`smoothAutoFocusSupported`](/documentation/AVFoundation/AVCaptureDevice/isSmoothAutoFocusSupported) A Boolean value that indicates whether the device supports smooth autofocus. [`smoothAutoFocusEnabled`](/documentation/AVFoundation/AVCaptureDevice/isSmoothAutoFocusEnabled) A Boolean value that indicates whether smooth autofocus is in an enabled state on the device. [`faceDrivenAutoFocusEnabled`](/documentation/AVFoundation/AVCaptureDevice/isFaceDrivenAutoFocusEnabled) A Boolean value that indicates whether the device has face-driven autofocus enabled. [`automaticallyAdjustsFaceDrivenAutoFocusEnabled`](/documentation/AVFoundation/AVCaptureDevice/automaticallyAdjustsFaceDrivenAutoFocusEnabled) A Boolean value that indicates whether the device automatically adjusts face-driven autofocus. [`autoFocusRangeRestrictionSupported`](/documentation/AVFoundation/AVCaptureDevice/isAutoFocusRangeRestrictionSupported) A Boolean value that indicates whether the device supports focus range restrictions. [`autoFocusRangeRestriction`](/documentation/AVFoundation/AVCaptureDevice/autoFocusRangeRestriction-swift.property) A value that controls the allowable range for automatic focusing. [`AutoFocusRangeRestriction`](/documentation/AVFoundation/AVCaptureDevice/AutoFocusRangeRestriction-swift.enum) Constants to specify the autofocus range of a capture device. ### Setting a focus point of interest [`focusPointOfInterestSupported`](/documentation/AVFoundation/AVCaptureDevice/isFocusPointOfInterestSupported) A Boolean value that indicates whether the device supports a point of interest for focus. [`focusPointOfInterest`](/documentation/AVFoundation/AVCaptureDevice/focusPointOfInterest) The point of interest for focusing. ### Setting a focus rectangle of interest [`focusRectOfInterestSupported`](/documentation/AVFoundation/AVCaptureDevice/isFocusRectOfInterestSupported) Whether the receiver supports focus rectangles of interest. [`focusRectOfInterest`](/documentation/AVFoundation/AVCaptureDevice/focusRectOfInterest) The device’s current focus rectangle of interest, if it has one. [`minFocusRectOfInterestSize`](/documentation/AVFoundation/AVCaptureDevice/minFocusRectOfInterestSize) The minimum size you may use when specifying a rectangle of interest. [`- defaultRectForFocusPointOfInterest:`](/documentation/AVFoundation/AVCaptureDevice/defaultRectForFocusPoint(ofInterest:)) The default rectangle of interest used for a given focus point of interest. ### Monitoring focus changes [`adjustingFocus`](/documentation/AVFoundation/AVCaptureDevice/isAdjustingFocus) A Boolean value that indicates whether the device is currently adjusting its focus setting. ### Setting focus manually [`lockingFocusWithCustomLensPositionSupported`](/documentation/AVFoundation/AVCaptureDevice/isLockingFocusWithCustomLensPositionSupported) A Boolean value that indicates whether the device supports locking focus to a specific lens position. [`lensPosition`](/documentation/AVFoundation/AVCaptureDevice/lensPosition) The current focus position of the lens. [`AVCaptureLensPositionCurrent`](/documentation/AVFoundation/AVCaptureDevice/currentLensPosition) A constant that represents the current lens position. [`- setFocusModeLockedWithLensPosition:completionHandler:`](/documentation/AVFoundation/AVCaptureDevice/setFocusModeLocked(lensPosition:completionHandler:)) Locks the lens position at the specified value, and sets the focus mode to a locked state. ### Inspecting the focus distance [`minimumFocusDistance`](/documentation/AVFoundation/AVCaptureDevice/minimumFocusDistance) The capture device’s minimum focus distance in millimeters. --- 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)