Update opensfm/exif.py
Update opensfm/exif.py

Co-Authored-By: GITNE <181012e9ca6eefd9f1230708fc8f53db1918ebc9@users.noreply.github.com>
oscarlorentzon/OpenSfM,mapillary/OpenSfM,oscarlorentzon/OpenSfM,mapillary/OpenSfM,mapillary/OpenSfM,oscarlorentzon/OpenSfM,oscarlorentzon/OpenSfM,mapillary/OpenSfM,oscarlorentzon/OpenSfM,mapillary/OpenSfM