Return-Path: <owner-tiff@olympiakos.com>
Received: from localhost (ak4719.spb.edu [127.0.0.1])
	by ak4719.spb.edu (8.12.1/8.12.1/Debian -5) with ESMTP id h1EBQVW4030283
	for <dron@localhost>; Fri, 14 Feb 2003 14:26:34 +0300
Received: from pop.in02.prd.whowhere.com [209.202.220.196]
	by localhost with POP3 (fetchmail-6.2.0)
	for dron@localhost (single-drop); Fri, 14 Feb 2003 14:26:34 +0300 (MSK)
Received: from gate7.olympiakos.com ([64.32.199.150]) by whowhere.com; Fri, 14 Feb 2003 01:25:54 -0000
X-Envelope-Sender: owner-tiff@olympiakos.com
Received: by gate7.olympiakos.com (Postfix, from userid 65534)
	id 6ED1C110A2; Thu, 13 Feb 2003 20:25:50 -0500 (EST)
Received: from localhost (localhost [127.0.0.1])
	by gate7.olympiakos.com (Postfix) with SMTP
	id 5880F110A0; Thu, 13 Feb 2003 20:25:50 -0500 (EST)
Received: by gate7.olympiakos.com (bulk_mailer v1.9); Thu, 13 Feb 2003 20:25:29 -0500
Delivered-To: tiff-outgoing@gate7.olympiakos.com
Received: by gate7.olympiakos.com (Postfix, from userid 16)
	id 940A31109C; Thu, 13 Feb 2003 20:25:29 -0500 (EST)
Delivered-To: tiff@olympiakos.com
Received: from smtp-relay-4.adobe.com (smtp-relay-4.adobe.com [192.150.22.9])
	by gate7.olympiakos.com (Postfix) with ESMTP id 22C1811080
	for <tiff@olympiakos.com>; Thu, 13 Feb 2003 20:25:28 -0500 (EST)
Received: from inner-relay-3.corp.adobe.com (inner-relay-3 [153.32.251.51])
	by smtp-relay-4.adobe.com (8.12.3/8.12.3) with ESMTP id h1E1PKnX018923
	for <tiff@olympiakos.com>; Thu, 13 Feb 2003 17:25:20 -0800 (PST)
Received: from mailsj-v1.corp.adobe.com (mailsj-dev.corp.adobe.com [153.32.1.192])
	by inner-relay-3.corp.adobe.com (8.12.3/8.12.3) with ESMTP id h1E1PKtX021346
	for <tiff@olympiakos.com>; Thu, 13 Feb 2003 17:25:21 -0800 (PST)
Received: from [153.32.48.223] ([153.32.48.223]) by
          mailsj-v1.corp.adobe.com (Netscape Messaging Server 4.15 v1 Jul
          11 2001 16:32:57) with ESMTP id HA9YM800.CL0; Thu, 13 Feb 2003
          17:25:20 -0800 
Mime-Version: 1.0
X-Sender: ccox@mailsj.corp.adobe.com
Message-Id: <p05111a01ba71f263b699@[153.32.48.223]>
In-Reply-To: <Pine.LNX.4.21.0302131943460.12171-100000@gate.apago.com>
References: <Pine.LNX.4.21.0302131943460.12171-100000@gate.apago.com>
Date: Thu, 13 Feb 2003 17:24:58 -0800
To: support@pixtran.com, tiff@olympiakos.com
From: Chris Cox <ccox@adobe.com>
Subject: Obsolete JPEG encoding in TIFF files
Content-Type: text/plain; charset="us-ascii" ; format="flowed"
Sender: owner-tiff@olympiakos.com
Precedence: bulk
Status: RO
Content-Length: 1198
Lines: 36



At 7:48 PM -0500 2/13/03, Dwight Kelly wrote:
>Today I discovered one of the leading producers of OldStyle JPEG
>(COMPRESSION=6) - Pixel Translations (www.pixtran.com). When I contacted
>them to ask why they continue to produce this stype of JPEG compressed
>TIFF when Adobe had documented COMPRESSION=7 method almost a year ago,

We just cleaned up the notes and updated it with suppliment 2 in 2002.
The type 7 JPEG update came out a long time before that. (and appears 
to have been deleted since we posted the cleaned up version)

http://partners.adobe.com/asn.developer/graphics/graphics.html



>"Compression type 7 does not adhere to the latest TIFF specification
>(version 6.0) for JPEG data.  We support the JPEG compression format 
>type 6 from
>that specification."

Adobe has not supported compression type 6 for many years, and the 
documentation for compression type 7 is on Adobe's web site (as well 
as in several of the Adobe product SDKs).

Even LIBTIFF has documented compression type 6 as being obsolete.....

Chris






To subscribe or unsubscribe email tiff-request@olympiakos.com with subscribe
or unsubscribe in the email body.  Libtiff home page: http://www.libtiff.org

