if ( rawEnabled && self.photoOutput.availableRawPhotoPixelFormatTypes.count ) {
  //photoSettings = [[AVCapturePhotoBracketSettings alloc] initWithFormat:nil rawPixelFormatType:(OSType)(((NSNumber *)self.photoOutput.availableRawPhotoPixelFormatTypes[0]).unsignedLongValue) bracketedSettings:bracketedSettings];
  photoSettings = [AVCapturePhotoBracketSettings photoBracketSettingsWithRawPixelFormatType:(OSType)(((NSNumber *)self.photoOutput.availableRawPhotoPixelFormatTypes[0]).unsignedLongValue) processedFormat:nil bracketedSettings:bracketedSettings];
 }
 else {
   //photoSettings = [[AVCapturePhotoBracketSettings alloc] initWithFormat:@{ AVVideoCodecKey : AVVideoCodecJPEG } rawPixelFormatType:0  bracketedSettings:bracketedSettings];
   photoSettings = [AVCapturePhotoBracketSettings photoBracketSettingsWithRawPixelFormatType:0 processedFormat:@{ AVVideoCodecKey : AVVideoCodecJPEG } bracketedSettings:bracketedSettings];
 }