From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/31345 Path: news.gmane.org!not-for-mail From: Alan Bowen Newsgroups: gmane.comp.tex.context Subject: Re: color question Date: Thu, 12 Oct 2006 09:04:37 -0400 Message-ID: <1499AD9B-BCF3-47AF-851A-75F4F31C1342@princeton.edu> References: <22af238a0610100930h4e84bd10ybe83da2e6489fad2@mail.gmail.com> Reply-To: mailing list for ConTeXt users NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 (Apple Message framework v752.2) Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: quoted-printable X-Trace: sea.gmane.org 1160658368 6600 80.91.229.2 (12 Oct 2006 13:06:08 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Thu, 12 Oct 2006 13:06:08 +0000 (UTC) Original-X-From: ntg-context-bounces@ntg.nl Thu Oct 12 15:06:04 2006 Return-path: Envelope-to: gctc-ntg-context-518@m.gmane.org Original-Received: from ronja.vet.uu.nl ([131.211.172.88] helo=ronja.ntg.nl) by ciao.gmane.org with esmtp (Exim 4.43) id 1GY0FV-0001io-2U for gctc-ntg-context-518@m.gmane.org; Thu, 12 Oct 2006 15:05:21 +0200 Original-Received: from localhost (localhost [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id 5ADB81FE2A; Thu, 12 Oct 2006 15:05:20 +0200 (CEST) Original-Received: from ronja.ntg.nl ([127.0.0.1]) by localhost (smtp.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 12208-05-4; Thu, 12 Oct 2006 15:05:14 +0200 (CEST) Original-Received: from ronja.vet.uu.nl (localhost [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id D5B3F1FE2D; Thu, 12 Oct 2006 15:05:13 +0200 (CEST) Original-Received: from localhost (localhost [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id 5C2791FE2D for ; Thu, 12 Oct 2006 15:05:11 +0200 (CEST) Original-Received: from ronja.ntg.nl ([127.0.0.1]) by localhost (smtp.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 12208-05-3 for ; Thu, 12 Oct 2006 15:05:00 +0200 (CEST) Original-Received: from vms046pub.verizon.net (vms046pub.verizon.net [206.46.252.46]) by ronja.ntg.nl (Postfix) with SMTP id 3CD981FE2A for ; Thu, 12 Oct 2006 15:04:59 +0200 (CEST) Original-Received: from [70.106.81.125] by vms046.mailsrvcs.net (Sun Java System Messaging Server 6.2-4.02 (built Sep 9 2005)) with ESMTPA id <0J7000070XNNZSFC@vms046.mailsrvcs.net> for ntg-context@ntg.nl; Thu, 12 Oct 2006 08:04:36 -0500 (CDT) In-reply-to: <22af238a0610100930h4e84bd10ybe83da2e6489fad2@mail.gmail.com> Original-To: mailing list for ConTeXt users X-Mailer: Apple Mail (2.752.2) X-Virus-Scanned: amavisd-new at ntg.nl X-BeenThere: ntg-context@ntg.nl X-Mailman-Version: 2.1.7 Precedence: list List-Id: mailing list for ConTeXt users List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: ntg-context-bounces@ntg.nl Errors-To: ntg-context-bounces@ntg.nl X-Virus-Scanned: amavisd-new at ntg.nl Xref: news.gmane.org gmane.comp.tex.context:31345 Archived-At: On Oct 10, 2006, at 12:30 PM, gnwiii@gmail.com wrote: > On 10/10/06, Alan Bowen wrote: >> If this is OT, my apologies to all. >> >> I am currently using ConTEXt to produce PDFs with a colored >> background which I specify using R G B settings. Unfortunately, this >> background does not look the same when others open the files on their >> computers. Is there anything I can do at my end to correct this? > > There are well-known differences between various computer brands, and > individual PC's generally vary widely. If you need really good > agreement, then all the systems need to be viewed under similar light > conditions and calibrated (e.g., using a colorimeter, or at least the > GretagMacbeth ColorChecker, a printed chart) and you want to generate > PDF's with a specific colorspace (not just deviceRGB). For most > purposes, it seems to work to use a rough "sRGB" setting where you > adjust the monitor (brightness, contrast) to approximate gamma=3D2.2. > Check this with: > makingfineprints1A.html#Monitor_test_pattern>. > > Many LCD's and worn-out CRT's like the ancient NCD on my desk will > fail even this simple test. > > -- = > George N. White III > Head of St. Margarets Bay, Nova Scotia Henning and George=97 Thanks for the replies. I had suspected that I was at the start of a = search for yet another Holy Grail. Still, I will look into this sRGB = (which is new to me), but first I had better see if I can calibrate = my own monitor properly. (It failed the Monitor test.) Alan