Commit d03cf6896 for imagemagick.org

commit d03cf68966dac39170d1fa0c4ed04963206a1510
Author: Cristy <urban-warrior@imagemagick.org>
Date:   Sun Jun 7 08:17:09 2026 -0400

    exif thumnail namespace convention

diff --git a/MagickCore/property.c b/MagickCore/property.c
index 8af7e39de..7590c26fd 100644
--- a/MagickCore/property.c
+++ b/MagickCore/property.c
@@ -1651,7 +1651,7 @@ static void GetEXIFProperty(const Image *image,const char *property,
                   (void) FormatLocaleString(key,MagickPathExtent,"%s",
                     description);
                   if (level == 2)
-                    (void) SubstituteString(&key,"exif:","exif:thumbnail:");
+                    (void) SubstituteString(&key,"exif:","exif:Thumbnail.");
                   break;
                 }
                 case 2:
@@ -1670,7 +1670,7 @@ static void GetEXIFProperty(const Image *image,const char *property,
                 default:
                 {
                   if (level == 2)
-                    (void) SubstituteString(&key,"exif:","exif:thumbnail:");
+                    (void) SubstituteString(&key,"exif:","exif:Thumbnail.");
                 }
               }
               if ((image->properties == (void *) NULL) ||
diff --git a/coders/thumbnail.c b/coders/thumbnail.c
index ca920968d..d37d45825 100644
--- a/coders/thumbnail.c
+++ b/coders/thumbnail.c
@@ -185,14 +185,14 @@ static MagickBooleanType WriteTHUMBNAILImage(const ImageInfo *image_info,
   profile=GetImageProfile(image,"exif");
   if (profile == (const StringInfo *) NULL)
     ThrowWriterException(CoderError,"ImageDoesNotHaveAThumbnail");
-  property=GetImageProperty(image,"exif:thumbnail:JPEGInterchangeFormat",
+  property=GetImageProperty(image,"exif:Thumbnail.JPEGInterchangeFormat",
     exception);
   if (property == (const char *) NULL)
     ThrowWriterException(CoderError,"ImageDoesNotHaveAThumbnail");
   offset=(ssize_t) StringToLong(property);
   if (offset < 0)
     ThrowWriterException(CoderError,"ImageDoesNotHaveAThumbnail");
-  property=GetImageProperty(image,"exif:thumbnail:JPEGInterchangeFormatLength",
+  property=GetImageProperty(image,"exif:Thumbnail.JPEGInterchangeFormatLength",
     exception);
   if (property == (const char *) NULL)
     ThrowWriterException(CoderError,"ImageDoesNotHaveAThumbnail");