Added reading of earlier ImageMagick EXIF data

Tests/test_file_png.py

@@ -593,9 +593,13 @@ class TestFilePng:
             assert im.text == {"TXT": "VALUE", "ZIP": "VALUE"}
 
     def test_exif(self):
-        with Image.open("Tests/images/exif.png") as im:
-            exif = im._getexif()
-        assert exif[274] == 1
+        for test_file in (
+            "Tests/images/exif.png",  # With an EXIF chunk
+            "Tests/images/exif_imagemagick.png",  # With an ImageMagick zTXt chunk
+        ):
+            with Image.open(test_file) as im:
+                exif = im._getexif()
+            assert exif[274] == 1
 
     def test_exif_save(self, tmp_path):
         with Image.open("Tests/images/exif.png") as im:

src/PIL/PngImagePlugin.py

@@ -694,14 +694,24 @@ class PngImageFile(ImageFile.ImageFile):
     def _getexif(self):
         if "exif" not in self.info:
             self.load()
-        if "exif" not in self.info:
+        if "exif" not in self.info and "Raw profile type exif" not in self.info:
             return None
         return dict(self.getexif())
 
     def getexif(self):
         if "exif" not in self.info:
             self.load()
-        return ImageFile.ImageFile.getexif(self)
+
+        if self._exif is None:
+            self._exif = Image.Exif()
+
+        exif_info = self.info.get("exif")
+        if exif_info is None and "Raw profile type exif" in self.info:
+            exif_info = bytes.fromhex(
+                "".join(self.info["Raw profile type exif"].split("\n")[3:])
+            )
+        self._exif.load(exif_info)
+        return self._exif
 
 
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