Modifying tags in multipage TIFF

[Archive]

[Originally posted by bogdan on 2009-11-01 07:51:59-08]

Hi Phil,

I have a TIFF, containing several pages, where each page has its own IFD entry, e.g. IFD0+IFD1...IFD4. Now, each of IFD contains the same tags (among others): Software, ModifyDate, DocumentName,...

It's easy to modify any tag if IFD is specified... Question:

How do I edit/delete tag in all existing IFDs at once? You know, something like

exiftool -IFDall:DocumentName=Fish image.tif

Another question: In latest version history (v7.98) you wrote, you've changed one Canon tag name. Where can I see which one? Is there any "changing tag names history"? I ask, because my GUI depends on your tag names.

Thanks for answering,

Bogdan

[Archive]

[Originally posted by exiftool on 2009-11-01 10:03:59-08]

Hi Bogdan,

Unfortunately there is no way to easily delete something from
all IFD's.  You must specify each IFD individually.  This has come
up in the past, but I can't think of an easy way around it.

Sorry for being a bit obscure in the exiftool revision history.
I changed "NoiseReduction" to "LongExposureNoiseReduction2".
I use the -list option myself to review all tag name
changes for each release, perhaps this would be useful for you
too.  I just do a "diff" with the tag list from the previous release.

- Phil

[Archive]

[Originally posted by bogdan on 2009-11-01 10:38:41-08]

Hi Phil,

Ok, I can understand about multiple IFD's. I've just thought there's some "secret way" -it happened before you've surprised me :-)

Thank you for telling me about Canon tag -even there are very few tags GUI is allowed to modify, though.

Wish you the best,

Bogdan