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Metadata Gobboldygook

four eighty sparky

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four eighty sparky Registered since 08th Apr 2011
Fri 15-Apr-11 04:19 AM | edited Fri 15-Apr-11 04:35 AM by four eighty sparky

Is there some reference or website that explains what all the gobboldygook that's contained in the metadata means?

I can understand much of it, and obviously things like shutter speed, aperture, ISO, etc. are pretty self-explanatory. Even things like Flash Compulsory Did Not Fire lend themselves to common sense interpretations.

But some of the lines, like Original Subsecond Time, Unknown tag Tagnum 0x8830 = data ===> 2 or User Comment Hex (followed by a bunch of multiplication problems) make absolutely no sense.

There's obviously a reason for this stuff to be recorded. I'd just like to know what it means.