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From: Aaron Boxer <boxerab@gmail.com>
Date: Thu, 8 Feb 2018 16:31:21 -0500
Message-ID: <CAK8GPyDOgdN9p_TjfcAMwQ8CLJoqXW61xrbb6zVyAZ5zHhGC4A@mail.gmail.com>
To: Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
Cc: TIFF mailing list <tiff@lists.maptools.org>
Subject: Re: [Tiff] TIFFTAG_RICHTIFFIPTC : registered as TIFF_LONG but
 commonly stored as TIFF_UNDEFINED
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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/
>

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<div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><div class=3D"gmail_quo=
te">On Thu, Feb 8, 2018 at 3:20 PM, Bob Friesenhahn <span dir=3D"ltr">&lt;<=
a href=3D"mailto:bfriesen@simple.dallas.tx.us" target=3D"_blank">bfriesen@s=
imple.dallas.tx.us</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quot=
e" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">=
<span class=3D"">On Thu, 8 Feb 2018, Aaron Boxer wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
<br>
Originally, there was one manufacturer that got it wrong, used LONG while<b=
r>
the data is of mixed datatype, and therefore only makes sense as BYTE or<br=
>
UNDEFINED on the TIFF level. Adobe chose to duplicate that mistake, so as<b=
r>
</blockquote>
<br></span>
If it helps any, IPTC officially deprecated and disowned this format perhap=
s 20 years ago. :-)<span class=3D"HOEnZb"><font color=3D"#888888"><br></fon=
t></span></blockquote><div><br></div><div>Yes, it does :) I won&#39;t waste=
 too many cycles on this. But, it&#39;s a shame to waste meta data.<br></di=
v><div>I do notice that when I use graphics magick on this particular TIFF =
file, I don&#39;t get the warning<br></div><div>about incompatible tags. Do=
 you know why there is this discrepancy ?<br></div><div><br>=C2=A0</div><bl=
ockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #=
ccc solid;padding-left:1ex"><span class=3D"HOEnZb"><font color=3D"#888888">
<br>
Bob<br>
-- <br>
Bob Friesenhahn<br>
<a href=3D"mailto:bfriesen@simple.dallas.tx.us" target=3D"_blank">bfriesen@=
simple.dallas.tx.us</a>, <a href=3D"http://www.simplesystems.org/users/bfri=
esen/" rel=3D"noreferrer" target=3D"_blank">http://www.simplesystems.org/u<=
wbr>sers/bfriesen/</a><br>
GraphicsMagick Maintainer,=C2=A0 =C2=A0 <a href=3D"http://www.GraphicsMagic=
k.org/" rel=3D"noreferrer" target=3D"_blank">http://www.GraphicsMagick.org/=
</a><br>
</font></span></blockquote></div><br></div></div>

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