From owner-freebsd-questions@FreeBSD.ORG Sat Sep 6 11:53:50 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id AD1D1106567A for ; Sat, 6 Sep 2008 11:53:50 +0000 (UTC) (envelope-from freebsd@edvax.de) Received: from mx01.qsc.de (mx01.qsc.de [213.148.129.14]) by mx1.freebsd.org (Postfix) with ESMTP id 485F78FC17 for ; Sat, 6 Sep 2008 11:53:50 +0000 (UTC) (envelope-from freebsd@edvax.de) Received: from r55.edvax.de (port-92-195-47-96.dynamic.qsc.de [92.195.47.96]) by mx01.qsc.de (Postfix) with ESMTP id E6F5850C67; Sat, 6 Sep 2008 13:53:46 +0200 (CEST) Received: from r55.edvax.de (localhost [127.0.0.1]) by r55.edvax.de (8.14.2/8.14.2) with SMTP id m86BrkQ1001546; Sat, 6 Sep 2008 13:53:46 +0200 (CEST) (envelope-from freebsd@edvax.de) Date: Sat, 6 Sep 2008 13:53:46 +0200 From: Polytropon To: Gary Kline Message-Id: <20080906135346.d16975e7.freebsd@edvax.de> In-Reply-To: <20080906033645.GA93841@thought.org> References: <20080903231439.GA98955@thought.org> <20080905170804.GB20329@melon.esperance-linux.co.uk> <20080905200601.GA81339@thought.org> <20080905223859.8ad56b37.freebsd@edvax.de> <20080906033645.GA93841@thought.org> Organization: EDVAX X-Mailer: Sylpheed 2.4.7 (GTK+ 2.12.1; i386-portbld-freebsd7.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: FreeBSD Mailing List Subject: Re: which gray is best for print? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Polytropon List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 06 Sep 2008 11:53:50 -0000 On Fri, 5 Sep 2008 20:36:45 -0700, Gary Kline wrote: > So you're saying that the "white" on my [monster] CRT is not the > same as on a future LCD Display? rats:) Exactly. And compare the "black", too, best way to differentiate with CRT and LCD side by side with a fullscreen color "black". > --I can't see much > difference in my new laserjet from my HP500 DeskJet, but then it > wasn't a main concern ... . Human perception is another thing. Just because *I* can't notice something, it doesn't imply that (1) others can't and (2) it isn't there. In order to make a human person *feel* the change of a sensory input is linear (e. g. the light intensity increases), you need to increase the actual input in a logarithmic way. http://www.neuro.uu.se/fysiologi/gu/nbb/lectures/WebFech.html > I took all 5 quarters of physics, like most of us, but never got > far into optics. Physics comes in 5 quarters? 5 * 0.25 = 1.25... :-) > And certainly, nothing like *this*. I learned about this when I studied psychology and computational visualistics, but the RGB vs. CMY stuff (additive and subtractive color combination) was part of the basal school education in the GDR. > the > quality of my writing is much more important that the colors of > typeface or background. I really applaud this attitude. You won't find them very often across the web, sadly, because "style is more important than content". I've seen things, man, ... > But this is an interesting side-bar. It's a very important topic to know about when you're doing DTP stuff. Exact color calibration is very important in this field. So you can understand why there's still a niche market for quality CRT monitors and quality printing devices. Of course, color temperatures and other settings like contrast and brightness are to be considered, too. > Really! So far, in my tests [staring at a CRT], I find an > off-white reads most easily against a very dark blue. 000033; > or whatever 333366 is. Still experimenting. it's very individual how colors are percepted. If someone with deuteranopia looks at certain color combinations where others may say: "Looks good!", they could say: "I don't see text there." At least for printed material, black on white is good, and it even can be used for projection media (beamer). When I was at university, some guys put up a presentation with black text on dark bluie background, 10pt serife font. Bah! Unreadable in the last row. -- Polytropon >From Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...