2018.02.08 18:45 "[Tiff] TIFFTAG_RICHTIFFIPTC : registered as TIFF_LONG but commonly stored as TIFF_UNDEFINED", by Aaron Boxer

2018.02.08 21:31 "Re: [Tiff] TIFFTAG_RICHTIFFIPTC : registered as TIFF_LONG but commonly stored as TIFF_UNDEFINED", by Aaron Boxer

On Thu, Feb 8, 2018 at 3:20 PM, Bob Friesenhahn <

bfriesen@simple.dallas.tx.us> wrote:

> On Thu, 8 Feb 2018, Aaron Boxer wrote:
>
>>

Originally, there was one manufacturer that got it wrong, used LONG while the data is of mixed datatype, and therefore only makes sense as BYTE or UNDEFINED on the TIFF level. Adobe chose to duplicate that mistake, so as

If it helps any, IPTC officially deprecated and disowned this format perhaps 20 years ago. :-)

Yes, it does :) I won't waste too many cycles on this. But, it's a shame to waste meta data.

I do notice that when I use graphics magick on this particular TIFF file, I don't get the warning

about incompatible tags. Do you know why there is this discrepancy?

Bob
--
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/