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When a user makes some changes (cropping, red-eye removal, ...) to photos in the built-in Photos.app on iOS, the changes are not applied to the fullResolutionImage returned by the corresponding ALAssetRepresentation . However, the changes are applied to the thumbnail and the fullScreenImage returned by the ALAssetRepresentation . Furthermore, information about the applied changes can be found in the ALAssetRepresentation 's metadata dictionary via the key @"AdjustmentXMP" . I would like to apply these changes to the fullResolutionImage myself to preserve consistency. I've found out that on iOS6+ CIFilter 's filterArrayFromSerializedXMP: inputImageExtent:error: can convert this XMP-metadata to an array of CIFilter 's: ALAssetRepresentation *rep; NSString *xmpString = rep.metadata[@"AdjustmentXMP"]; NSData *xmpData = [xmpString dataUsingEncoding:NSUTF8StringEncoding]; CIImage *image = [CIImage imageWithCGImage:rep.fullResolutionImage]; NSError *error = nil; NSArray *filterArray = [CIFilter filterArrayFromSerializedXMP:xmpData inputImageExtent:image.extent error:&error]; if (error) { NSLog(@"Error during CIFilter creation: %@", [error localizedDescription]); } CIContext *context = [CIContext contextWithOptions:nil]; for (CIFilter *filter in filterArray) { [filter setValue:image forKey:kCIInputImageKey]; image = [filter outputImage]; } However, this works only for some filters (cropping, auto-enhance) but not for others like red-eye removal. In these cases, the CIFilter s have no visible effect. Therefore, my questions: Is anyone aware of a way to create red-eye remova

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