That's not a bug, it's a feature.
After stitching the original metadata does not apply to the final image any
more. E.g. focal length, field of view and exposure time are different from the
input image.
Copying all would also copy an existing thumbnail which is incorrect for the
stitched image.
Therefore by default we copy only a subset of the metadata which are also valid
for the stitched image.
So this will not change in the code base.
But we provide a way for the user to select for him itself, which metadata to
copy. This can be done with exiftool argfiles (see exiftool manual for details
about these argfiles, switch -@).
There are 2 different argfiles
1.) An intermediate argfile: this is used when copying metadata to
intermediates images (remapped images, fused stacks, blended exposure layers).
This is internal used like "exiftool -tagsfromfile source.jpg -@
intermediate_argfile destination.jpg"
2.) A final argfile: this is additional used for the final panorama. This
argfile is used additional to the intermediate argfile: "exiftool -tagsfromfile
source.jpg -@ intermediate_argfile -@ final_argfile destination.jpg"
In the final argfile there will additionally some place holders replaced.
For more details about the exiftool argfile, read the exiftool manual.
** Changed in: hugin
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1507801
Title:
Not all metadata copied
Status in Hugin:
Invalid
Bug description:
Not all metadata is properly copied from the first image (or middle,
or average, or whatever).
Namely the fields that describe the lens, ISO rating, metering mode,
flash, exposure program, exposure comp, country code, country,
province, city, location, label, rating, keywords, copyright.
That's as far as I could find. I suspect a couple more fields are
missing, but I haven't tested all of them. I suppose this is enough of
an indication that, although the "copy metadata" checkbox in
Preferences is ticked, it 'forgets' to copy a boatload of fields.
Some metadata is copied though, like author, camera, gps, but nothing
more as fas as I can tell quickly enough.
I can see there's two more boxes in Preferences for "argfiles", but I
have no idea what I should put there, and I have no way of knowing
what it expects me to do there. Or if it's going to help me in the
first place. At any rate, I would say just simply copy ALL metadata.
If it's using exiftool, copying ALL metadata should be a lot easier
than copying an arbitrary set.
In the mean time, is there a trivial workaround that we can apply?
This is Hugin 2015.0.0 on Windows 10 x64.
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