[iPhone Dev] Camera Capture Focus Mode Change

- Insert to Touch Event

NSError *error = nil;

// Device config : Auto

[self._captureDevice lockForConfiguration:&error];

if ([self._captureDevice isFocusModeSupported:YES]) {

    [self._captureDevice setFocusMode:AVCaptureFocusModeAutoFocus];

}

[self._captureDevice unlockForConfiguration];