Added reading of IFD tag type

Tests/test_file_tiff.py

@@ -385,6 +385,10 @@ class TestFileTiff:
         ret = ifd.load_double(data, False)
         assert ret == (8.540883223036124e194, 8.540883223036124e194)
 
+    def test_ifd_tag_type(self):
+        with Image.open("Tests/images/ifd_tag_type.tiff") as im:
+            assert 0x8825 in im.tag_v2
+
     def test_seek(self):
         filename = "Tests/images/pil136.tiff"
         with Image.open(filename) as im:

src/PIL/TiffImagePlugin.py

@@ -665,6 +665,7 @@ class ImageFileDirectory_v2(MutableMapping):
                 (TiffTags.SIGNED_LONG, "l", "signed long"),
                 (TiffTags.FLOAT, "f", "float"),
                 (TiffTags.DOUBLE, "d", "double"),
+                (TiffTags.IFD, "L", "long"),
             ],
         )
     )

src/PIL/TiffTags.py

@@ -69,6 +69,7 @@ SIGNED_LONG = 9
 SIGNED_RATIONAL = 10
 FLOAT = 11
 DOUBLE = 12
+IFD = 13
 
 TAGS_V2 = {
     254: ("NewSubfileType", LONG, 1),