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CHROMiX ColorNews Issue #45 - The New basICColor DISCUS

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  CHROMiX ColorNews
   Issue # 45 - June 8, 2011

  1. CHROMiX News
  2. Latest blog entries in ColoRants (and Raves)
  3. Shows and Events
  4. Color Industry News
  5. Forum Topics, Random Bits, etc.
  6. Article - The New basICColor DISCUS
  7. CHROMiX Open Box items for sale
  8. ColorNews Administration (feedback, subscriptions, etc.)

For the very freshest color updates, check out our new blog Colorants (and raves).

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  CHROMiX News What the heck have we been up to?

Mac OS X Lion Color Management Migration Tool

Apple announced this week that OS X Lion will ship in July. Mac OS X Lion does not include the "Rosetta" technology that emulates the PowerPC (PPC) processor. Without Rosetta, any Mac OS X applications which only have PPC code will not run! If you are unsure which applications are PPC only, either find the application on your hard disk and "Get Info" (command-I) or run the application and then open the Activity Monitor to see the application type.

Many common Color Management tools and utilities are PPC only and will not be available to users running OS X Lion. This includes: ProfileMaker (including ColorPicker, Editor, MeasureTool), Monaco Profiler (including GamutWorks), MonacoQCcolor, Eye-One Share, Eye-One Match, ColorShop, ColorLab, Pulse ColorElite, MonacoOptix and numerous others. X-Rite, CHROMiX and other companies offer tools that have been updated to run on Lion and will perform many similar tasks as the older PPC software you may be accustomed to using.

CHROMiX is creating the Mac OS X Lion Color Management Migration Tool which is a reference table to help determine if there are alternatives for your tools and needs. It will be available this week and we'll update it regularly as needed.

basICColor DISCUS Review

Pat Herold reviews the NEW basICColor DISCUS a high lab-grade colorimeter for measuring LCD monitors. We believe that the DISCUS will set the high bar for reference devices. See Pat's article below.

ONYX Directly Supporting Curve2

Curve2 was fully integrated into the new ONYX X10.1 RIP software! CHROMiX, HutchColor and ONYX Graphics coordinated together to make this happen. See Color Industry News below.

CHROMiX is now officially the US Reseller for basICColor products.

CHROMiX will be the US resource for basICColor product, information and support. We are updating our website and will reflect updated basICColor information Lets discuss (no pun intended!) basICColor options for you! more

ColorThink v2.3 final versions for Mac & Win

ColorThink v2.3 final versions for Mac & Win....... are ready! This locks down a final version compatible with all new OSs including Windows 7 (32 and 64-bit), Mac OS X 10.6X (Snow Leopard). If you are a ColorThink v2 user, download here:

Mac ColorThink v2.3
Win ColorThink v2.3

Maxwell Growth Continues

Maxwell has rolled out across the country and the world. As of newsletter "press time," Maxwell contains over thirty six million (36,000,000) measurements from the UK to China and is growing every day. If you have a success story you'd like to tell, please contact us at Maxwell Success Stories and we'll get it told!


  CHROMiX Blog Here are some of the recent posts to our blog: Colorants (and raves)

  Shows and Events Color-relevant gatherings to plan for

June 15th, 2011, 6:30 PM - at the Lucky Labrador Brew Pub, 915 SE Hawthorne in Portland, OR.
Pacific Northwest Color Management Users Group - Portland Chapter - Invites you to 'CMUG Forum Live'. We will be chatting about all things color and having a Q&A driven by attendees. CMUG's new focus is a changed format oriented towards discussions of real problems people face (regarding color management) and real world solutions for these problems. Color experts and CMUG Advisors will be present. No cost (except for your own beverages). Food provided. Plenty of free parking. Come join us!

June 14th - 16th, 2011 - G7 Offset and Digital - A Unique Opportunity at PIA's world class facility in SEWICKLEY, PA. Presented and hosted by IDEAlliance and Printing Industries of America, this event will include lab instruction and hands-on training. Don Hutcheson will be the Training Program Lead. G7 Expert & G7 Professional Certifications earned for coursework. For more and Registration Contact Nanette Nathan 703-837-1093 or

September 11th - 14th, 2011 - Graph Expo 2011, McCormick Place South, Chicago, IL

September 22nd - 29th, 2011 - ITMA 2011, Barcelona, Spain

November 10th - 12th, 2011 - Graphics Canada, Toronto, ON

Events Calendar: For all current and future events, bookmark this calendar.

  Color Industry News What's going on in the world of color

Apple's OS X Lion to ship in July for $29.99

However, OS X Lion is a significant departure and will break any application not built for the Intel processor (which is a lot of apps). CHROMiX announced this week the Mac OS X Lion Color Management Migration Tool (announced in this newsletter) to aid color people with the transition.

Barbieri SpectroPad

Barbieri announced what we consider one of the most exciting Spectrophotometer instruments in years... the new SpectroPad. The SpectroPad is a portable, non-tethered solution for those who need accuracy and mobility. **CHROMIX will incorporate the SpectroPad SDK and support it in Maxwell**, when available. more...


gets rated an "Outstanding!" by Dry Creek Photo in a monitor calibrator shootout. Check out Ethan Hansen's article and review of the new basICColor DISCUS

GMG acquires Aurelon

This is a very interesting (and strategic) move for GMG into the large format print production market. more...

ONYX Graphics Incorporates Curve2 G7 Support

(announced officially at the ISA 2011 Conference) has partnered with CHROMiX and HutchColor and has integrated Curve2 functionality into their latest RIP version! This makes ONYX Graphics the first RIP software company to integrate Curve2 software into the profiling process.The new ONYX G7 support tool in version X10.1 helps sign and print shops achieve gray and color consistency across all wide and grand format printers driven by ONYX RIP software. Curve2 software is used to generate the G7 calibration targets; ONYX PosterShop and ONYX ProductionHouse software import the calculated data and automatically set the calibration targets. This makes it much easier for print shops to achieve G7. more...

X-Rite Amends i1Profiler EULA

The licensing agreement that had many industry users (and potential users) of their software "up in arms" has been updated. Essentially most users are OK, but special case users (profiling services that use X-Rite i1Profiler software, OEM profiles made with i1Profiler, etc) will need to negotiate a special license directly with X-Rite now. more...

   Popular topics from

    Barry Wheeler of the US Library of Congress:   has posted a paper after the IS&T Conference of their findings related to color space specification i.e.: sRGB and AdobeRGB(98) when imaging cultural heritage materials from their collections. Interesting read:

    Terrie Barbera:   pointed out a fascinating PDF piece from Eizo on the subject of color wheels.

  The New basICColor DISCUS - an article by Pat Herold

Just last July, I wrote an article explaining the current state of affairs in the area of monitor calibration, specifically explaining the different hardware devices out there that are used to calibrate and profile monitors. (ColorWiki: Profiling Devices for Monitors) At that time there was a noticeable gap between the need to profile certain high-end, wide-gamut monitors and finding a device that will profile them to their maximum potential. To over-simplify things a bit, we usually recommend people use a spectrophotometer to accurately measure their extremely saturated colors. But the common spectrophotometers don't measure blacks very well and some shadow detail is lost as a result. Colorimeters on the other hand, can measure blacks well, but might not be so good at measuring these saturated colors. At that time all I could do was to tell you the way things were and leave it up to you to decide between accurate color or good shadow detail.

Well now we have a new player in town, and it promises to fill this gap nicely, if a bit expensively. The DISCUS is a colorimeter, made by basICColor in Germany, that has all the elements we are looking for, and retails for about $1200. As a colorimeter, it has a limited number of bands that it measures, and therefore can measure good, dark blacks with very little noise (see my previous article for more information about why). But unlike other colorimeters, this one has been designed to be a lab-grade instrument of the highest quality. It was made for the express purpose of accurately calibrating these wide-gamut displays with no compromises. It has thermal compensating circuitry that will ensure that changes in the physical temperature around the device will not influence measurement results. The case and the optics are made of high-quality materials, and are sealed to preserve them and make the device long-lasting. This is the first colorimeter I have ever seen with a built-in laser pointer. This allows you to actually see where the instrument is pointing if you are calibrating a projector screen or some other non-contact display surface. But let's get to the heart of why one would spend this much for a colorimeter:


I'm going to let you in on a little known, color management dark secret. It is quietly acknowledged among those in the field that the typical monitor calibrating device is not designed for or is capable of giving you 100% accurate measurements. These devices are designed to give you good, repeatable results - which allow you to bring your display back to a calibrated state - that is reasonably close to what you're aiming for. If you stop to think about it, there's really no way for a $200 instrument to give laboratory-precision results. (For that kind of accuracy, people normally pay upwards of $16 - $20,0000 for a research-quality spectroradiometer like a Photo Research device, for example this) But our little pucks hanging on the front of our monitors do a fine job for us just the same. They are a lot more accurate than our eyes, they bring our displays around pretty close to the colors we're aiming for, and they repeatedly give us these results month after month, so that we can count on the color of our monitor not changing. This allows the photographer and graphic artist to do their viewing with a degree of confidence and get their color managed workflow moving smoothly with no surprises.

For some reading this, that last paragraph was interesting but not all that alarming. For others, this claim is probably rather jarring. Not 100% accurate!? That's intolerable! In the line of work I do, I've GOT to have accurate color! It is for this latter group that the DISCUS was made.

Our DISCUS has been independently tested to determine its color measurement accuracy compared to a Lab-grade spectroradiometer. It was found to come to about a 2 delta E difference when measuring both standard gamut (sRGB)and wide-gamut (adobeRGB+) displays. This is a very low color difference, and represents just about the best accuracy a colorimeter can get. For CCFL-backlit wide-gamut monitors (which represent most wide gamut monitors) the results were even closer. For more information on delta E, see this. Details on this evaluation are here


All this accuracy does not help you much if your readings fluctuate from measurement to measurement. Most of the common monitor-calibrating devices have the potential to vary quite a bit from one reading to the next - especially when there is a change in physical temperature of the device or the ambient heat. You can see this when you perform a "validation" procedure on your profile at the end of your profiling procedure. Many software programs offer this option at the end of the profiling workflow, so you can check out how your profile is performing immediately after you have created it. Well, immediately after you have created it, your profile should be perfect, right?! Instead, you'll find that there are always some delta E variations, and this is a good indicator of the range of how variable your particular instrument is. It is not unusual to see single color delta E variations of 1.0 or more within the same instrument. The problem with this is that it is possible that you could see changes in color on your display after calibrating that are due to the inconsistency of the measurement device rather than the display itself.

Now, I don't want to over-state this and bring everybody into a panic. For the most part, your i1Display, or Spyder, or ColorMunki, or i1Pro will probably work fine, and give you very accurate profiles from month to month. But you can see where, for those who really depend on quality at this caliber, there has been a need for an instrument with better repeatability.

Temperature Compensation

At the same time we went to check consistency, we wanted to see how well this much-vaunted "temperature compensation" would work. Some of the variability of different instruments has been attributed to how warm the instrument is when it is being used, or how it warms up AS it is being used - and the DISCUS is said to compensate for changes in the ambient temperature around the instrument.

To see if this thing worked, I took a wide gamut monitor, a Discus, and an i1Pro into the back hallway of the CHROMiX headquarters on a chilly day in April. We've been getting far too many of those this Spring, so it was nice to actually have a good use for it. Once the display and the measurement devices acclimatized for over an hour, I made multiple measurements and profiles using the basICColor software since that was the only program that could drive both instruments.

Afterwards, I carefully replicated the same profiling procedures back in our normal, 72-degree office environment. I also repeated these tests using a more typical "sRGB" gamut LCD display.

From the profiles that were created, I extracted the actual measurements that were used to make the profile, so we could compare the actual measured values of these identical color sets.

The difference between the Discus and an i1Pro were dramatic.
The average dE was .23 for the Discus, and .92 for the i1Pro. However, the Max dE (the difference for the worst patch) was .60 for the Discus and 9.62 for the i1Pro! The patch responsible for this huge difference with the i1Pro was the black patch, which measured at a lighter luminance with the 72-degree, "warmer" environment. But it wasn't just the black: Saturated primary colors had high differences well over 1 and 2 dE. (See Diagram) By contrast, the Discus seemed to just cruise along regardless of temperature changes. Imagine measuring 2 weeks apart, 14-degree change in temperature, a slightly different placement on the screen, and the largest difference I measured out of all the Discus tests was a .31 Ave dE and a .86 Max dE. Numbers that low can be attributed to changes in the display over that time.

Now you may not have occasion to calibrate your monitor next to a hockey rink, but this test does demonstrate how big a change is possible, and how precise a good colorimeter can be. It makes you wonder how much the environment affects your profiles. Do you profile first thing in the morning after the furnace/AC comes on? Was your colorimeter sitting next to the heat register before you picked it up to profile your monitor? Did you handle your i1Pro for several minutes scanning a printer target, before calibrating the monitor? Are your employees doing any of these things? The nice thing about the DISCUS is that none of these everyday temperature changes will have a significant affect on your measurements.


As mentioned in the previous article, an instrument needs the ability to measure a very dark black in order to provide you with deep blacks and detail in the shadow areas. The DISCUS does very well here, too. For a long time, the benchmark instrument for this kind of test has been the DTP94 colorimeter (also known as the Optix) because it has extra noise reduction circuitry built in. Using a DTP94, our CG245W measured a very dark .18 cd/m2 for maximum black. Both the DISCUS and the Eizo swing sensor measured .17 - just a little bit better (darker). (By comparison, an i1Pro come up with a .45, while other instruments generally fall somewhere in-between.) (See Diagram)


I don't know which contributes more to the durability of this product: The heavy metal construction of the casing - or the knowledge that this colorimeter costs over $1000? Somehow the price tag kept me from experimenting with any durability tests. It certainly looks, feels and handles like an armor-plated tank, and according to the company literature, they made it to be long-lasting.


While the on-screen measurements are very accurate, Ethan Hansen at Dry Creek Photo reports that the ambient light measurement of the DISCUS is consistently about 600 Kelvin too low. So if you were to use the DISCUS to give you a reading of the color of the ambient light in your room, it will report that it is warmer in color than it really is. Perhaps this will be dealt with in further upgrades to the software.

basICColor Display software

While this article mainly concerns the DISCUS device, I'll say a few words about the basICColor Display software since (at the moment) it is the only software that works with the DISCUS. There are reports that Eizo is looking into supporting it in the near future in their ColorNavigator profiling software.

There are a few glitches in basICColor Display that indicate they have not got all their wires hooked up. The basICColor software does not seem to be able to connect to an i1Display2 device. Other users have found that some NEC displays will only calibrate to a D50 white point when calibrating using DDC communication. I find it surprising that the software is limited to its pallet of 45 colors, and does not provide a means of using a larger set of patches. None of these are really deal-breakers if you want to look more into the DISCUS. The current version (v. 4.2.4) is the first to support the DISCUS, and they are looking to come out with an entirely new version 5 soon.

The DISCUS fits the bill for everything a high end user needs in a display calibration device. I can almost say that I have not found anything better. The only instrument that rivals the DISCUS for these superior results in accuracy and shadow detail is the built-in swing sensor that comes with the Eizo CG245W and CG275W. These sensors also do a great job calibrating their own wide gamut displays and still provide excellent black readings for fine shadow detail. For any other displays, the DISCUS is the only way I know of to get this kind of precision in an instrument at a fraction of the cost of a spectroradiometer. Despite its hefty price tag, I expect that the DISCUS is destined to be a common tool in the arsenal of color management professionals in the years to come.

Thanks for reading,

Patrick Herold

   To read this article with images in ColorWiki, click here

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Entire Contents of CHROMiX ColorNews (c)2011 CHROMiX, Inc. CHROMiX, Maxwell, ColorThink, ColorNews, ColorSmarts, ColorGear, ColorForums, DisplayWatch and are trademarks of CHROMiX Inc. All other trademarks are property of their respective owners. CHROMiX ColorNews is intended as an informative update to CHROMiX customers and business associates. We are not responsible for errors or omissions. You may not copy or reuse a ny content from this newsletter without written permission from CHROMiX, Inc.