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Computers really are a fractal of complexity.

I wanted to programmatically change the creation date of some photos and started researching EXIF data to discover there's actually 4 different, but related, metadata dictionaries used (at the same time).

"0th", "Exif", "GPS", "1st"

So I've now spent the last hour reading documentation, the TIFF image format spec's PDF and trying to work out the history of why.

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