Access metadata (exif tags) of image taken by UIImagePickerController – iOS/iPhone

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Apparently, you can access the metadata of an image right after it has been taken. The protocol method that is called by the system after an image has been selected is:

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

The NSDictionary argument, info, contains a key: UIImagePickerControllerMediaMetadata

Now if I can figure out how to get the exif tags or any exposure-level information from this to infer basic information about light-level I will be happy. 🙂