by ʇolɐǝz ǝɥʇ qoq

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A while ago I had the need to add cutom fields to my exif (some programming staff)

I found out that most of the fields are locked and that I cannot add new fields Do you know a software that can 1. Cancel the lock of exif fields edit 2. Enable fields adding.

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What makes you think they're "locked"? – Rowland Shaw Sep 29 '10 at 11:36

It looks like there is a library which can change + add exif meta data:

So I'm wondering what your source was that said the fields are locked?

There is also a very good tool called ExifTool which allows very extensive changing of the meta information. There is however a warning about changing meta data, you have to know what you're doing.

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