Instance Property


The current white balance mode.


@property(nonatomic) AVCaptureWhiteBalanceMode whiteBalanceMode;


Before changing the value of this property, you must call lockForConfiguration: to acquire exclusive access to the device’s configuration properties. Otherwise, setting the value of this property raises an exception. When you are done configuring the device, call unlockForConfiguration to release the lock and allow other devices to configure the settings.

You can observe changes to the value of this property using Key-value observing.

See AVCaptureWhiteBalanceMode for possible values.

See Also

Managing the White Balance

- isWhiteBalanceModeSupported:

Returns a Boolean value that indicates whether the given white balance mode is supported.


Indicates whether the devise is currently adjusting the white balance.

- chromaticityValuesForDeviceWhiteBalanceGains:

Converts device-specific white balance RGB gain values to device-independent chromaticity values.


The current device-specific RGB white balance gain values.


The maximum supported value to which a channel in the AVCaptureWhiteBalanceGains may be set.

- deviceWhiteBalanceGainsForChromaticityValues:

Converts device-independent chromaticity values to device-specific white balance RGB gain values.

- deviceWhiteBalanceGainsForTemperatureAndTintValues:

Converts device-independent temperature and tint values to device-specific white balance RGB gain values.


The current device-specific white balance values required for a neutral gray white point.

- setWhiteBalanceModeLockedWithDeviceWhiteBalanceGains:completionHandler:

Sets white balance to locked mode with the specified deviceWhiteBalanceGains values.

- temperatureAndTintValuesForDeviceWhiteBalanceGains:

Converts device-specific white balance RGB gain values to device-independent temperature and tint values.


A Boolean value indicating whether the device supports locking white balance to specific gain values.


A special constant representing the current white balance setting.


Structure containing RGB white balance gain values.


Structure containing CIE 1931 xy chromaticity values.


Structure containing temperature and tint values correlated to a white-balance color.


Constants to specify the white balance mode of a capture device.

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