TAG_FMT_IFD       354 exif/exif.c    		case TAG_FMT_IFD:       return "IFD";
TAG_FMT_IFD      1179 exif/exif.c    	if (format == TAG_FMT_IFD) {
TAG_FMT_IFD      3048 exif/exif.c    				if (format==TAG_FMT_IFD) {