TAG_SUB_IFD 3044 ext/exif/exif.c case TAG_SUB_IFD: TAG_SUB_IFD 3650 ext/exif/exif.c entry_tag == TAG_SUB_IFD TAG_SUB_IFD 3665 ext/exif/exif.c case TAG_SUB_IFD: TAG_SUB_IFD 3676 ext/exif/exif.c if (section_index!=SECTION_THUMBNAIL && entry_tag==TAG_SUB_IFD) {