what fields to edit?

[Archive]

[Originally posted by exifnoobie on 2007-06-29 12:11:54-07]

What is the best method of locating the fields that I will need to edit. I use Photoshop as my main image editor and it seems that certain fields when populated end up in other areas, is there a "map" of how data entered into one field relates to other fields?

The core of the problem is that I don't yet have a good understanding (the real problem with many things in my life is a lack of information : ) of the different groups contained within the exif data. The simple report that I generate -h doesn't seem to help. Is there a more detailed view into the structure of the Exif data and how it all inter-relates?

Or, maybe just a link to some good nighttime reading about Exif info?

thanks, j

[Archive]

[Originally posted by bogdan on 2007-06-29 18:36:30-07]

I can understand what you mean... even Phil's homepage contain a lot of information, it can be difficult to understand how "metadata stuff" works -soon you recognize EXIF is only part of that game :-) Anyway, it's worth to read Phil's site (again and again) and tryingout ExifTool on some "test" images (again and again).

As you observed, everybody (Adobe,Corel,...) is trying to add something to metadata, where many don't conform to specifications or (worse) delete something important.

As for learning/experimenting... please visit my humble site http://freeweb.siol.net/hrastni3/" target="_blank">http://freeweb.siol.net/hrastni3/ where you can download GUI for ExifTool -maybe it will help you to see some things clearly.

Greetings,

Bogdan

[Archive]

[Originally posted by exiftool on 2007-06-30 00:22:03-07]

Bogdan is right, EXIF is only part of the game.

I definitely suggest adding the -g (or -g1) option to your -h output.  This
will show you where the information was found in the image.

The thing to do is to enter the information with photoshop, then use
exiftool -g to see where it went.  Newer versions of Photoshop prefer
to use XMP, but older versions used IPTC.  You will probably see that
values are written to both.  EXIF is used more by cameras to store
meta information, or for geolocation for entering GPS coordinates.

What format of information you want to write depends on the type
of information you are writing and the application you are using
to read it.  In general, it is best to use your other application to generate
a file to see where it puts the information, then use exiftool to store
the information in the same place in your images.

I hope this helps.

- Phil