AVCaptureDeviceInput has a new property unifiedAutoExposureDefaultsEnabled in iOS 12. What does this do?
Unfortunately, its documentation doesn't clarify much:
If YES, auto-exposure defaults are unified. If NO (the default), the auto-exposure behavior of apps is preserved. If you manually set minFrameRate, maxFrameRate, or maxExposureDuration, your custom values will override the device defaults regardless of this property's setting.
What exactly happens if you turn it on, or off?
