Added IFD1 reading

Tests/test_image.py

@@ -7,7 +7,14 @@ import warnings
 
 import pytest
 
-from PIL import Image, ImageDraw, ImagePalette, UnidentifiedImageError, features
+from PIL import (
+    ExifTags,
+    Image,
+    ImageDraw,
+    ImagePalette,
+    UnidentifiedImageError,
+    features,
+)
 
 from .helper import (
     assert_image_equal,
@@ -808,6 +815,18 @@ class TestImage:
             reloaded_exif.load(exif.tobytes())
             assert reloaded_exif.get_ifd(0xA005) == exif.get_ifd(0xA005)
 
+    def test_exif_ifd1(self):
+        with Image.open("Tests/images/flower.jpg") as im:
+            exif = im.getexif()
+            assert exif.get_ifd(ExifTags.IFD.IFD1) == {
+                513: 2036,
+                514: 5448,
+                259: 6,
+                296: 2,
+                282: 180.0,
+                283: 180.0,
+            }
+
     def test_exif_ifd(self):
         with Image.open("Tests/images/flower.jpg") as im:
             exif = im.getexif()

src/PIL/ExifTags.py

@@ -353,3 +353,4 @@ class IFD(IntEnum):
     GPSInfo = 34853
     Makernote = 37500
     Interop = 40965
+    IFD1 = -1

src/PIL/Image.py

@@ -3641,17 +3641,17 @@ class Exif(MutableMapping):
 
     def get_ifd(self, tag):
         if tag not in self._ifds:
-            if tag in [ExifTags.IFD.Exif, ExifTags.IFD.GPSInfo]:
-                # exif, gpsinfo
+            if tag == ExifTags.IFD.IFD1:
+                if self._info is not None:
+                    self._ifds[tag] = self._get_ifd_dict(self._info.next)
+            elif tag in [ExifTags.IFD.Exif, ExifTags.IFD.GPSInfo]:
                 if tag in self:
                     self._ifds[tag] = self._get_ifd_dict(self[tag])
             elif tag in [ExifTags.IFD.Interop, ExifTags.IFD.Makernote]:
-                # interop, makernote
                 if ExifTags.IFD.Exif not in self._ifds:
                     self.get_ifd(ExifTags.IFD.Exif)
                 tag_data = self._ifds[ExifTags.IFD.Exif][tag]
                 if tag == ExifTags.IFD.Makernote:
-                    # makernote
                     from .TiffImagePlugin import ImageFileDirectory_v2
 
                     if tag_data[:8] == b"FUJIFILM":
@@ -3727,7 +3727,7 @@ class Exif(MutableMapping):
                                 makernote = {0x1101: dict(self._fixup_dict(camerainfo))}
                         self._ifds[tag] = makernote
                 else:
-                    # interop
+                    # Interop
                     self._ifds[tag] = self._get_ifd_dict(tag_data)
         return self._ifds.get(tag, {})