Instance Property

ISO

The current exposure ISO value.

Declaration

@property(nonatomic, readonly) float ISO;

Discussion

This property returns the sensor's sensitivity to light by means of a gain value applied to the signal.

Only ISO values between minISO and maxISO are supported. Higher values will result in noisier images.

The property value can be read at any time, regardless of exposure mode, but can only be set using the setExposureModeCustomWithDuration:ISO:completionHandler: method.

See Also

Managing the ISO

AVCaptureISOCurrent

This value indicates that the caller does not wish to specify a value for the ISO property, and that it should instead be set to its current value.

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