2006.08.24 07:29 "[Tiff] IPTC tag", by Joris Van Damme

2006.09.07 05:15 "Re: [Tiff] Some tags with count zero", by Anurag Singh

Act i want to make exact copy of tags in output file, and i dont think that it would create any problem problem. Because existing tif image already have that tag with same count and value (or offset). Actually i my case count is 0, i am expecting that tiff image interpreted as dummy tag..

i want to know that if any tag have count zero then is there any use of this tag?

On 9/6/06, Joris <joris.at.lebbeke@skynet.be> wrote:

> Anurag,
> Anurag Singh wrote:

> > I am woking with tiff, using libtiff. I got some tags which have > > count zero in the tiff file. these are tag numbers of those tags.

> >
> > 34016, 34017, 34018, 34022, 34025, 34026, 34029
> >
> > Is ther any use of these tags when it's count zero, or simple we
> > should drop these tags during copying.
> In theory, one should never copy tags that are unknown.
> You may do otherwise, and many people do. But then you are open for

> trouble, for instance when copying a LONG value that is in fact intended > to be a private IFD pointer.

Joris Van Damme
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