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2018.11.04 20:20 "Libtiff will be released soon", by Bob Friesenhahn
2018.11.04 20:49 "Re: Libtiff will be released soon", by Kemp Watson
2018.11.04 23:35 "Re: Libtiff will be released soon", by Bob Friesenhahn
2018.11.05 14:51 "Re: Libtiff will be released soon", by Kemp Watson
2018.11.05 15:28 "Re: Libtiff will be released soon", by Bob Friesenhahn
2018.11.05 15:38 "Re: Libtiff will be released soon", by Kemp Watson
2018.11.07 19:19 "Re: Libtiff will be released soon", by Bob Friesenhahn
2018.11.09 16:44 "Re: Libtiff will be released soon", by Edward Lam
2018.11.09 17:23 "Re: Libtiff will be released soon", by Bob Friesenhahn
2018.11.09 18:49 "Re: Libtiff will be released soon", by Edward Lam
2018.11.09 19:04 "Re: Libtiff will be released soon", by Bob Friesenhahn
2018.11.09 19:14 "Re: Libtiff will be released soon", by Edward Lam
2018.11.09 20:53 "Re: Libtiff will be released soon", by Roger Leigh
2018.11.09 22:11 "Re: Libtiff will be released soon", by Bob Friesenhahn
2018.11.10 15:00 "Re: Libtiff will be released soon", by Bob Friesenhahn
2018.11.10 16:04 "Re: Libtiff will be released soon", by Kemp Watson
2018.11.10 18:14 "Re: Libtiff will be released soon", by Larry Gritz
2018.11.10 19:41 "Re: Libtiff will be released soon", by Kemp Watson
2018.11.10 21:30 "Re: Libtiff will be released soon", by Larry Gritz
2018.11.28 12:43 "Re: Libtiff will be released soon", by Kemp Watson
2018.11.05 14:06 "Re: Libtiff will be released soon", by Edward Lam
2018.11.05 14:34 "Re: Libtiff will be released soon", by Kemp Watson

2018.11.10 19:41 "Re: Libtiff will be released soon", by Kemp Watson

Iíve sent emails to Adobe support, no responses, several times over the last
year.

Leonard Rosenthol, here on the list, is with Adobe on the PDF team, and has
asked internally as itís not his wheelhouse.

Iíve asked Dave Urbanic at Zoomify to try via his buddy Pete Falco at Adobe,
nothing came of that.

Really, if Adobeís not going to maintain TIFF, they should give up ownership
of the standard, or at least admit they want it to dieÖ heck, they donít
even host a copy of the standard any more. The standard says the standard is
published at

https://www.adobe.com/Support/TechNotes.html

and

ftp://ftp.adobe.com/pub/adobe/DeveloperSupport/TechNotes/PDFfiles

Both are 404/gone.

Interestingly, I just read the spec again; hereís the part about tag
registration:

An organization might wish to store information meaningful to only that
organi-
zation in a TIFF file. Tags numbered 32768 or higher, sometimes called
private
tags, are reserved for that purpose.
Upon request, the TIFF administrator (send email to devsup-person@adobe.com)
will allocate and register one or more private tags for an organization, to
avoid
possible conflicts with other organizations. You do not need to tell the
TIFF ad-
ministrator what you plan to use them for, but giving us this information
may help
other developers to avoid some duplication of effort. We will likely make
the tag
database public at some point.
Private enumerated values can be accommodated in a similar fashion. For ex-
ample, you may wish to experiment with a new compression scheme within TIFF.
Enumeration constants numbered 32768 or higher are reserved for private
usage.
Upon request, the administrator will allocate and register one or more
enumerated
values for a particular field (Compression, in our example), to avoid
possible
conflicts.
Tags and values allocated in the private number range are not prohibited
from
being included in a future revision of this specification. Several such
instances
exist in the current TIFF specification.
Do not choose your own tag numbers. Doing so could cause serious
compatibility
problems in the future. However, if there is little or no chance that your
TIFF files
will escape your private environment, please consider using TIFF tags in the
ďreusableĒ 65000-65535 range. You do not need to contact Adobe when using
numbers in this range.

Thatís not how the registries worked in practice, but I personally have
never emailed devsup-person@adobe.com.

Kemp


From: "tiff-bounces@lists.maptools.org" <tiff-bounces@lists.maptools.org> on
behalf of Larry Gritz <lg@larrygritz.com>
Date: Saturday, November 10, 2018 at 1:16 PM
To: "tiff@lists.maptools.org" <tiff@lists.maptools.org>
Subject: Re: [Tiff] Libtiff will be released soon

I know there's a good chance that all the right things have been done, but
can somebody please summarize the history of attempted communications with
Adobe on the matter of the tag registry -- specifically which people have
been contacted and what the replies have been?

I have a few ideas for how to make progress on this but I don't want to make
any assumptions that they haven't been tried before.

--
Larry Gritz
lg@larrygritz.com<mailto:lg@larrygritz.com> /
lg@imageworks.com<mailto:lg@imageworks.com>