Received: from mailgate009.isp.belgacom.be (mailgate009.isp.belgacom.be [195.238.6.2])
	by maildelivery010.isp.belgacom.be (Postfix) with ESMTP id 4518A1DC021
	for <joris.at.lebbeke@skynet.be>; Sun,  9 Dec 2007 21:01:35 +0100 (CET)
Received: from r153.dmsolutions.ca (HELO duke.maptools.org) ([209.217.116.153])
  by in.mx.skynet.be with ESMTP; 09 Dec 2007 21:01:27 +0100
Received: from duke.maptools.org (duke.maptools.org [127.0.0.1])
	by duke.maptools.org (8.12.11/8.12.10) with ESMTP id lB9JkRFC012666;
	Sun, 9 Dec 2007 14:46:45 -0500
Received: from scooby.simplesystems.org (scooby.simplesystems.org
	[65.66.246.67])
	by duke.maptools.org (8.12.11/8.12.10) with ESMTP id lB9JkP9k012663
	for <tiff@lists.maptools.org>; Sun, 9 Dec 2007 14:46:25 -0500
Received: from freddy (freddy.simplesystems.org [65.66.246.65])
	by scooby.simplesystems.org (8.12.10+Sun/8.12.10) with ESMTP id
	lB9JkKkZ020147; Sun, 9 Dec 2007 13:46:20 -0600 (CST)
Date: Sun, 9 Dec 2007 13:46:20 -0600 (CST)
From: Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
X-X-Sender: bfriesen@freddy
To: Andrey Kiselev <dron@ak4719.spb.edu>
Subject: Re: [Tiff] dpi settings
In-Reply-To: <20071209183957.GA20984@ak4719.spb.edu>
Message-ID: <Pine.SOC.4.64.0712091334200.2729@freddy>
References: <47447E82.4050600@pobox.com> <475A30CD.3010402@depauw.edu>
	<Pine.SOC.4.64.0712080852340.2729@freddy>
	<475B5AB0.4090302@argyllcms.com>
	<D4C52B29-A149-411B-8824-5C0B81D9BD98@smartgames.ca>
	<475BFF53.3040108@argyllcms.com>
	<Pine.SOC.4.64.0712090953470.2729@freddy>
	<29bcc0df0712090833j3c26afa4k1df5ae404ed242d2@mail.gmail.com>
	<Pine.SOC.4.64.0712091105140.2729@freddy>
	<20071209183957.GA20984@ak4719.spb.edu>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
Cc: tiff@lists.maptools.org
X-BeenThere: tiff@lists.maptools.org
X-Mailman-Version: 2.1.4
Precedence: list
List-Id: TIFF and libtiff discussion <tiff.lists.maptools.org>
List-Unsubscribe: <http://lists.maptools.org/mailman/listinfo/tiff>,
	<mailto:tiff-request@lists.maptools.org?subject=unsubscribe>
List-Archive: <http://lists.maptools.org/mailman/private/tiff>
List-Post: <mailto:tiff@lists.maptools.org>
List-Help: <mailto:tiff-request@lists.maptools.org?subject=help>
List-Subscribe: <http://lists.maptools.org/mailman/listinfo/tiff>,
	<mailto:tiff-request@lists.maptools.org?subject=subscribe>
Sender: tiff-bounces@lists.maptools.org
Errors-To: tiff-bounces@lists.maptools.org
X-UIDL: 000000000023ceae.00002930
X-MSP-STORE: Sun, 09 Dec 2007 21:01:35 +0100
Status: RO

On Sun, 9 Dec 2007, Andrey Kiselev wrote:
>
> Oh, no, you are just mesunderstanding the resulution tags purpose. They
> have nothing to do with the actual image content. The same 300 dpi image

I intentionally did so since the post that started this thread ignored 
the TIFF specification as well.  The use of a "resolution" value to 
determine size for desktop publishing purposes is completely bogus and 
bad design.  If someone wants to specify a size, then they might as 
well specify the physical rendering size (e.g. 30cm by 20cm) rather 
than compute it based on the number of physical pixels and a 
"dimension" based on pixels per unit.  The current approach has caused 
considerable confusion for users and resulted in the destruction of 
many fine images (due to images being "resized" via resampling rather 
than simply changing the resolution tag).

The start of this discussion thread was a claim that 'meter' units 
should be used for TIFF.  Unfortunately, the TIFF specification only 
supports inch and centimeter units.

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

_______________________________________________
Tiff mailing list: Tiff@lists.maptools.org
http://lists.maptools.org/mailman/listinfo/tiff
http://www.remotesensing.org/libtiff/
