minor

src/ImageSharp/Metadata/Profiles/Exif/Values/ExifLong8Array.cs

@@ -26,11 +26,8 @@ namespace SixLabors.ImageSharp.Metadata.Profiles.Exif
         {
             get
             {
-                if (this.Value is null)
+                if (this.Value is not null)
                 {
-                    return ExifDataType.Long;
-                }
-
                     foreach (ulong value in this.Value)
                     {
                         if (value > uint.MaxValue)
@@ -38,6 +35,7 @@ namespace SixLabors.ImageSharp.Metadata.Profiles.Exif
                             return ExifDataType.Long8;
                         }
                     }
+                }
 
                 return ExifDataType.Long;
             }

src/ImageSharp/Metadata/Profiles/Exif/Values/ExifNumberArray.cs

@@ -19,11 +19,8 @@ namespace SixLabors.ImageSharp.Metadata.Profiles.Exif
         {
             get
             {
-                if (this.Value is null)
+                if (this.Value is not null)
                 {
-                    return ExifDataType.Short;
-                }
-
                     foreach (Number value in this.Value)
                     {
                         if (value > ushort.MaxValue)
@@ -31,6 +28,7 @@ namespace SixLabors.ImageSharp.Metadata.Profiles.Exif
                             return ExifDataType.Long;
                         }
                     }
+                }
 
                 return ExifDataType.Short;
             }