Bug ID: 73602
           Summary: Mirrored EXIF rotations are not applied to thumbnails
           Product: MediaWiki
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: trivial
          Priority: Unprioritized
         Component: File management
            Blocks: 31504
       Web browser: ---
   Mobile Platform: ---

EXIF allows 8 possible values for the Orientation field: 0°, 90°, 180°, 270°,
and the same four for the mirror image of the original. The last four are not
used often, but are supported to some degree by the browsers. (See
for an overview of support.)

MediaWiki ignores mirrored rotations when generating thumbnails - the EXIF
information is stripped, and the physical orientation is left unchanged. See
[[commons:File:EXIF rotation 90 mirrored.jpg]] for an example (depending on the
browser, you might need to open the image directly to see the correct position,
or you might not see it at all - Chrome positions it correctly when viewed
directly but not when viewed on a page).

Obviously this is Priority: No One Cares but filing it anyway for the sake of

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