November 2011 - colorsync-users

Re: Epson 9900 can't print to 44" wide media
by david wollmann 18 Nov '11

18 Nov '11

> set your leading edge (bottom) margin to .56" (NO LESS!) and your > trailing (top) to the same. Your minimum L and R margins can be 1/8" > or 3mm. I always set them to 1/4". I have always found that the Epson driver really likes to have margins set, roll or sheet. I agree with the above comment. The .56 for the bottom margin in my experience is most important. It can't be any shorter. The others I usually set at .125 inches or as suggested, .25 inches. > We aren't printing edge-to-edge. > > The image we are trying to print is nowhere near the paper size -- > there is at least a two inch gap on any side. Then why not set standard margins? It saves a persons sanity when trying to use a Printer Driver in a production workflow. And I agree with you Martin, I much prefer a stand alone RIP to an RGB printer driver when it comes to production. Glad to hear you are printing. David Wollmann

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Re: Epson 9900 can't print to 44" wide media
by Andrew Rodney 18 Nov '11

18 Nov '11

On Nov 17, 2011, at 5:20 PM, Martin Orpen wrote: > We aren't printing edge-to-edge. Doesn’t matter if the page margins are ‘illegal’ Andrew Rodney http://www.digitaldog.net/

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Epson 9900 can't print to 44" wide media
by Martin Orpen 17 Nov '11

17 Nov '11

Just so nobody else wastes 4 hours of valuable production time… Contrary to what all the manuals and support documents say, the Epson 9900 is unable to auto sense or acknowledge any media wider than 43" -- even if you've loaded it correctly with 44" paper. Therefore, if you set custom page sizes to anything wider than 43" you'll get a paper load error every time. This behaviour is undocumented and really annoying. This problem doesn't affect printing which bypasses the Epson drivers and drives the 9900 directly -- so we have no problem printing edge to edge on 44" using a GMG RIP -- but this is now impossible using the Epson drivers :( I assumed that our 9900 had a hardware issue with the media sensor but Epson have just confirmed that their in-house 9900 has exactly the same problem… -- Martin Orpen Idea Digital Imaging Ltd

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color sync
by Berna Feldman 15 Nov '11

15 Nov '11

How do I REMOVE color sync from my iMac OS10.6.8? I don't even know how it entered my computer but it is very disruptive for documents When I try to print a receipt on-line I cannot do so. It doesn't have an option to print or save the document. Any help would be greatly appreciated

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Re: i1profiler GCR favor/question
by Mike Strickler 11 Nov '11

11 Nov '11

Matt, With 100% GCR setting, max K width (K start 30) I got only 42 32 37 5. If you start the black at 20% the 50 K will give more K (14%). With "Full Black Separation" and a K start of 30 I get 4 3 7 45; however, one would need to evaluate separations on press as this is very extreme GCR, and issues such as loss of gloss or instability might result. Mike > ----------------- > > Message: 1 > Date: Fri, 11 Nov 2011 11:32:05 -0600 > From: Matt Louis <matt(a)printplace.com> > Subject: i1profiler GCR favor/question > To: "colorsync-users(a)lists.apple.com" > <colorsync-users(a)lists.apple.com> > Message-ID: <CAE2B835.9E1C%matt(a)printplace.com> > Content-Type: text/plain; charset="us-ascii" > > If anyone has made an i1profiler profile with aggressive GCR using a standard sheetfed specification such as Gracol or Fogra39, would you be kind enough to share the result of the 50%K conversion when using the same profile as source and destination via absolute colorimetric. > > I am accustomed with Monaco to be able to get a resulting value set of C23 M16 Y17 K31. If Xrite had a fully functioning demo I would not be asking for your help (wink, nudge Mr. Xrite). > > Thank you, > Matt Louis >

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i1profiler GCR favor/question
by Matt Louis 11 Nov '11

11 Nov '11

If anyone has made an i1profiler profile with aggressive GCR using a standard sheetfed specification such as Gracol or Fogra39, would you be kind enough to share the result of the 50%K conversion when using the same profile as source and destination via absolute colorimetric. I am accustomed with Monaco to be able to get a resulting value set of C23 M16 Y17 K31. If Xrite had a fully functioning demo I would not be asking for your help (wink, nudge Mr. Xrite). Thank you, Matt Louis

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Re: NEC software...
by Art Marshall 10 Nov '11

10 Nov '11

The SpectraViewII calibration solution is not available in Brazil. I'm not sure about SpectraView Profiler. And you are correct - the MultiProfiler tool is only available for the MultiSync PA Series displays. Art Marshall Product Manager, Professional and Medical Displays NEC Display Solutions of America Message: 1 Date: Sun, 30 Oct 2011 20:35:02 -0200 From: "gariba(a)grbimagem.com.br" <gariba(a)grbimagem.com.br> Subject: NEC software... After upgrading to Mac OS Lion, and looking to update software, I found two different NEC calibration software, Spectraview II and Profiler 4128, the second appearing the newest, and download link is located at Basicc website. I wonder with one would be better with the Multisync WQXi series. Researching about, I found some forum posts talking about Multiprofiler, will this work only with PA series? GRB Imagem 3D, Ilustração, Fotografia 55(51) 30611029

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New light booth Down Under needs good home
by Rick Hatmaker 09 Nov '11

09 Nov '11

Friends... we shipped the wrong GTi light viewer to an Australian customer. Our fault. He now has the right product, but we also have a GTi PDV-3eTR/D stranded down under. Its more expensive to ship it back to the USA than it would be to find a welcome home for it. GTi PVD-3e TR w/Full Range Dimming Feature plus Raised Base. New. Reflection: 16.5" x 25.3" (42 cm x 64 cm) Transparency: 8" x 12" (20 cm x 30 cm) Weight: 33 lbs, 15 kgs MSRP is $1565 US. We sell it regularly on our website for $1399. For obvious reasons I can't cite our cost, but assume its moderate... which doesn't matter in any case. We need to find a home for it. If you know of someone looking for this unit and/or a great deal on an excellent viewer, we would appreciate your help. Admittedly this may seem a bit forward, but we could really use the help of our friends on this list for a home down under for this unit. Rick Hatmaker CHROMiX, Inc. Seattle, WA, USA 206-388-2559

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Camera Gamut (was Re: basiccolor INPUT)
by Richard Wagner 08 Nov '11

08 Nov '11

On Nov 6, 2011, at : Iliah Borg <ib(a)pochtar.com> wrote: > I think we have a little language problem here. To quote, "there is no such thing as a camera, or scanner, gamut" > http://www.cis.rit.edu/research/mcsl2/outreach/faq.php?catnum=3#255 Thanks for the link, Iliah. > "there is no such thing as a camera, or scanner, gamut" There are several interesting discussions of this postulate in the literature. Unfortunately, the articles are expensive unless you have access to a research library, so I've taken the liberty of summarizing two of them for those without such access. Berns (1) takes the above position and argues that the term ‘‘color gamut’’ historically has been associated with color output such as optimal color stimuli and additive and subtractive imaging systems. He notes that from both historical and current contexts, ‘‘color gamut’’ is associated with producing color, not measuring color; that is, color gamuts are defined by output devices, not input devices. If a camera is considered a measurement device - not unlike a colorimeter or spectrophotometer - it cannot have a "color gamut" as it is able to respond to all colors presented to it (i.e., there is no such thing as an "out of gamut" color for the device). Berns takes issue with the use of the expression "color gamut" in scientific comparisons of digital cameras, and argues that "if a measurement device has a color gamut, ... [then] a miscalibrated spectrophotometer (calibrating to black instead of white) or camera with lens cap attached have small color gamuts." Rather than use the term "color gamut," he proposes the use of the expression, "color gamut rendering." "That is, under a set of stated conditions a target of colors has been rendered to a set of colorimetric coordinates owing to various parameters. The stated conditions might include an ensemble of spectral reflectance factors obtained using a spectrophotometer with stated measurement geometry (the target), the camera-taking light source, the camera’s optical properties and methodology of obtaining colorimetric coordinates if known, and the standard illuminant and observer for the colorimetric data. Differences in input device characteristics would result in the target’s color gamut being rendered differently." Brill (2) urges the explicit adoption of a definition for the camera color gamut. In his view, a viable definition seems to be the set of CIE XYZ triplets such that, for any such XYZ, there exists a spectral power distribution in a predefined set whose camera values map through a predefined algorithm to that XYZ. Brill notes that the term "color gamut" is problematic when applied to a scanner or digital camera. However, he acknowledges that it has been used in this context in various venues, including referred articles and conferences. In such discussions, "the definition is always assumed and never stated." Brill believes it is time to "make explicit what is implicitly understood, or metaphorically, to spray-paint the invisible definition." Brill discusses alternative definitions: he finds it "hard to grasp what could be a camera color gamut, because any light (visible or not) maps to some point in the camera color space—even if it is to the origin of the space. One could define a sensor (camera) gamut as the set of spectral radiances to which the sensor responds, but that would equate ‘‘spectrum’’ to ‘‘color’’ and the gamut could not be characterized in a space of reduced dimensionality such as a color space. Alternatively, a camera gamut could be ‘‘the largest set of scene colors that produce unique outputs,’’ but this definition also has difficulties." Brill notes that the term ‘‘camera color gamut’’ is a misnomer, because what is being discussed is not a property of just a camera. Rather, it is a property of a set of spectral power distributions (A), a camera (B), and an algorithm that maps camera values to CIE XYZs (C). Brill ultimately proposes the following definition: "Camera color analysis gamut: Attribute of a set of spectral power distributions (SPDs) (A), a camera (B), and an algorithm (C) that maps camera values to CIE XYZ triplets, that attribute being the set of CIE XYZ triplets for each of which there is an SPD in (A) that, when acquired by camera (B), produces camera values that, when processed by algorithm (C), produces that XYZ triplet. The gamut can be represented in a color space derived from XYZ triplets (such as CIELAB), or in a reduced space such as chromaticity (x,y). (The alternative term camera color gamut is also used). " Brill closes with the following statement: A definition of camera gamut is new, and needed. The definition I propose here is now being discussed by representatives of several standards bodies. The quality of the algorithm, or of the camera, or of the set of SPDs, are valid subjects of research papers, but one must start with a definition such as the one here so people know what is being discussed. Both of these short papers are excellent and make points worth understanding and remembering. --Rich Wagner === (1) Let's call it “color-gamut rendering” COLOR RESEARCH & APPLICATION Volume 32, Issue 4, August 2007, Pages: 334–335, Roy S. Berns (2) Camera color gamut: Spray-painting the invisible definition; COLOR RESEARCH & APPLICATION; Volume 32; Issue 3; June 2007; Pages: 236–237; Michael H. Brill

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basiccolor INPUT
by Mark.Franzen＠kohls.com 07 Nov '11

07 Nov '11

Greetings - Has anybody used basiccolor Input to create a camera input profile? If so, how is the color accuracy? I am looking to set up a copy stand (fixed lights/exposures) and need the color reproduction to be as accurate as possible. I have tried some of the DNG workflows, and am not totally satisfied with the results. Any suggestions? Thanks for the help. ********************************************************************** CONFIDENTIALITY NOTICE: This is a transmission from Kohl's Department Stores, Inc. and may contain information which is confidential and proprietary. If you are not the addressee, any disclosure, copying or distribution or use of the contents of this message is expressly prohibited. If you have received this transmission in error, please destroy it and notify us immediately at 262-703-7000. CAUTION: Internet and e-mail communications are Kohl's property and Kohl's reserves the right to retrieve and read any message created, sent and received. Kohl's reserves the right to monitor messages by authorized Kohl's Associates at any time without any further consent.

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