Lightroom: Preserve new Exif 2.31 tags on export

  • 5
  • Problem
  • Updated 2 years ago
  • (Edited)
When exporting files, Lightroom will preserve most exif data from the raw file on export, but not all of it. For example, the Time Zone Offset, Ambient Temperature and Above Sea Level Exif values are stripped from the exported version.
This occurs even if you select "All Metadata" on the export dialogue box.
Since the exif spec was updated in July 2016 to version 2.31, it would be helpful if Lightroom supported the entire spec.
Could you please how I can retain all of my raw exif data on export?
Photo of dgood

dgood

  • 2 Posts
  • 0 Reply Likes
  • frustrated

Posted 2 years ago

  • 5
Photo of John R. Ellis

John R. Ellis, Champion

  • 3608 Posts
  • 938 Reply Likes
"For example, the Time Zone Offset, Ambient Temperature and Above Sea Level Exif values are stripped from the exported version."

TimeZoneOffset is a non-standard EXIF tag that's not part of Exif 2.3 or Exif 2.31.  Some cameras in the past used it, even though it wasn't capable of recording time-zone offsets of fractional hours (e.g. India).   

There is no AboveSeaLevel EXIF tag in 2.3 or 2.31.  There are GPSAltitude and GPSAltitudeRef tags, which LR has long preserved and exported.

There is no AmbientTemperature tag in 2.31.  Some Sony cameras included it in their proprietary MakerNotes.  Exif 2.31 does add the Temperature tag.  
(Edited)
Photo of John R. Ellis

John R. Ellis, Champion

  • 3608 Posts
  • 938 Reply Likes
Exif Version 2.31 added a number of tags:

Time-zone tags: OffsetTime, OffsetTimeOriginal, OffsetTimeDigitized, 

Shooting-condition tags: Temperature, Humidity Pressure, WaterDepth, Acceleration, CameraElevationAngle

LR CC 2015.8 / 6.8 preserves these in the original imported photo, even after doing Save Metadata To File.  But it does not copy these tags to exported copies -- it should.

I examined dpreview.com sample files for a number of new cameras (Canon EOS M5, Pansonic Lumix DMC-FZ2500, Olympus OM-D E-M1 Mark II, Nikon D3400).  So far, only the Sony a6500 appears to generate Exif version 2.31 files.  It generates the OffsetTime* tags, but not the other new ones.