[Gimp-user] GIMP 2.10 TIFF EXIF metadata stripped on Windows 10

[MartinFa <forums gimpusers com>]

Thanks for the reply.

I start off with .tif files which have EXIF (and other) metadata within them -
as added by my photo scanner, photo library software (Synology's Photo Station)
and/or from ExifTool - Original & create dates; User note; copyright, GPS,
various tags. These are all present and displayed in ExifToolGUI. As soon as I
open the .tif file in GIMP 2.10 and go... Image -> Metadata -> View Metadata,
nothing is shown. When I then export the modified image as a .tif and check it
with ExifToolGUI, all the metadata has been stripped out.

If I try this starting with a similar .jpg file, the metadata is displayed
correctly in GIMP. Exporting an orginal .jpg as a .jpg preserves the EXIF
metadata correctly, as does exporting it as a TIFF.

I do have the settings to export all the metadata types in Edit -> Preferences
-> Image Import & Export, but it looks to me like the metadata is being stripped
out on opening the TIFF file in GIMP and not during the export.

However - taking this a step further - If I start with a ,jpg that contains
metadata; open it in GIMP; export it as a .tif, close & re-start GIMP (not sure
if this bit is relevant); open the .tif file I just created from the original
.jpg, then the metadata is preserved.

I'm wondering of there's some strange formatting of my original .tif files that
GIMP is struggling with?

> I'm using Windows 7, rather than 10, but i have just imported a JPG
> and then exported it as a TIFF - the EXIF information was preserved
> (the focal length tag is an EXIF, rather than TIFF, tag and this was
> still present).
>
> By default the saving of EXIF information should be on but it would be
> worth checking in the Advanced Options when exporting  that this is
> enabled. If it is you could repeat what I have tried - openJPG, export
> as TIFF. If the EXIF data is preserved then the problem could be in
> the importing of the TIFF EXIF data (if you are sure that your
> original TIFF image does have the EXIF data). If the JPG to TIFF
> process loses the EXIF data there could be a difference between W7 and
> W10.
>
> If you can narrow down the area of the problem in this way it would be
> worth filing a bug report.
>
> I am using Partha's portable version of 2.10.0 - it might also be
> worth trying this (you can use it without affecting your other GIMP
> installation(s))

-- 
MartinFa (via www.gimpusers.com/forums)