Due to our involvement with freeColour e.V., at the last meeting in Switzerland the desire for a cross-media tool for designers was expressed with which one can create intersections of colourspaces from the freieFarbe CIELAB HLC Colour Atlas XL.
With Gamutmap, Proof GmbH has now created such a tool, which is available to all designers free of charge. With Gamutmap nearly 100 individual colour spaces can be indicated from 34.250 colours of the entire CIELAB colour space, or intersections from many combined colour spaces can be indicated.
An example: As a designer you are looking for colours for a new corporate design, which are available in sRGB for the internet, in ISOCoatedV2 for printing image brochures and in PSOUncoatedV3 for printing stationery. For video productions, the Rec.709 colour space is also to be taken into account.
In Gamutmap you can now easily select the colour spaces sRGB, ISOCoatedV2, PSOUncoatedV3 and Rec.709 and then click on “show”. After a few seconds you will only see the colours that are available in all selected colour spaces. If you move the mouse over a colour field, you will directly see the absolute colorimetric values of the colour in all selected colour spaces and you can copy them directly to your clipboard.
Since the hex value of the sRGB colour space was also still interesting, this colour space was additionally marked for display. The HLC and Lab values of all colours can be read directly in the colour table. All other colour values can be copied to the clipboard simply by moving the mouse to the desired colour field. For the colour field shown in the example above, it looks like this:
HLC: H005 | L055 | C035
Lab: 55 | 34,867 | 3,05
sRGB: 188 | 106 | 128
sRGB (HEX): #BC6A80
Rec. ITU-R BT.709-5: 188 | 87 | 115
ISO Coated V2 (ECI): 14 | 64 | 27 | 11
PSO Uncoated V3 (Fogra52): 10 | 70 | 34 | 8
We are sure that gamutmap will be a great help to many designers in creating cross-media corporate designs and are very happy that we were able to start and push the project with the members of freieFarbe e.V. For us, gamutmap is “work in progress”, which means: In the coming weeks we will add further functionalities and features to gamutmap. For example, a German version is in progress, and the download of spectral D50 CxF data of the selected colours should be possible in the future directly while hovering over the respective colour field, if the field is in the gamut of the freefarbe CIELAB HLC Colour Atlas XL. Further function extensions are already on our wish list… 🙂
We welcome suggestions, criticism, wishes and any support for the expansion and addition of Gamutmap.
A proof is one that is produced according to the specifications of the latest revision of the proofing standard ISO 12467-7 and is within the tolerances of this standard. The current revision is ISO 12647-7:2016, which has been tightened even further with this standard and has been supplemented by a certified edition of spot colours such as PANTONE and HKS.
But what makes the certified proof cheap? That’s the low price. Proofs are printed on certified proof papers on very high-quality pigment inkjet printers, usually using expensive proofing software, and measured with spectrophotometers. So how can production be done cheaply here?
One litre of ink for proofing devices is around 400 EUR, so it makes sense to use inexpensive alternative ink from China. The problem: there are no manufacturers – neither in China nor anywhere else – who produce inks that would actually produce similar inks in terms of pigment colour and spectral composition. I once called a manufacturer who advertises that his – already quite expensive – inks could also be used for proofing. When I asked him, he said: “No, no, that’s just for advertising, but of course I would never do that or recommend it, and I don’t know anybody who does that. As for the China inks, he said: “They start at 20 EUR per liter, but you get a different ink with every delivery, depending on where the wholesaler buys. Then they have to re-measure the proofer every time… forget it.” In addition, replacing a clogged print head costs around 2,500 EUR, so the risk is too high. A real proof therefore only works with original, very expensive ink.
GMG ColorProof, EFI Fiery XF and ORIS Color Tuner are just some of the most important proofing solutions on the market. What they all have in common is that proofing software is rather a niche software, so the programming effort is very high compared to the sales figures. Depending on the size of the output device and the range of functions in terms of verification, spot colour display or proofing on special materials such as transparent foils, etc., the software costs between 5,000 and 10,000 EUR, and in combination with other software products from GMG or Colorlogic it can quickly cost considerably more. Although there are a few low-cost solutions here too, these are usually irrelevant in professional proofing, as they are either not suitable for more than one workstation, or important functions such as spot colour libraries etc. are missing.
The 7th Fogra Color Management Symposium was held in Munich from February 12 to 13, 2020, to which I was invited as a speaker for the area of proofing in Session 6. I reported on our tests in proofing for the Fogra58-Beta-Textile-RGB Standard for textile digital printing.
The Fogra Color Management Symposium is one of the events in the field of colour management and brings together scientists and users from all over the world for a two-day exchange of ideas in Munich. A total of 21 speakers and 7 moderators reported on the topics multicolour printing, proofing, print procurement, customer expectations, colour management for 3D printing and colour management for textile digital printing, the topic to which I was also assigned.
I arrived one day earlier, because there was a “Speakers Dinner” the evening before, and I also had to discuss with Jan-Peter Homann and Joe Tschudi the structure and selection of our patterns in terms of textile RGB. On site in Munich we set up the standard light booth LED Color Viewing Light XL HYBRID 2.0 provided by Just-Normlicht and coordinated once again which samples we would show best during the Color Management Symposium.
During the Speakers Dinner I had the opportunity to talk to Jürgen Seitz from GMG, the moderator of my session, and Jeffrey Stauffer from oneflexo GmbH, in order to organize our session on day 2 well. Gerardo Cerros from CMA Imaging Belgium SPRL, the third speaker of our session arrived directly for his presentation. Furthermore we could test our presentations on the Fogra computers and already got to know the lecture room and familiarize ourselves with the stage. On the stage sat the three speakers per session plus the moderator of the session. All presentations, moderations, questions etc. were translated live from English to German and German to English. I held my presentation in German, but I had kept the slides in “Denglish” so that they were understandable for Germans as well as for everyone else.
The complete programme of the symposium can be found on the Fogra website. The topics of the seven sessions were:
1. Managing customer expectations – Managing colours throughout the food chain
2. Creating colour credibility in CMYK and extended gamut printing
3. Real-world multicolour packaging implementations (ECG)
4. Industrial Printing application: High Speed Inkjet beyond commercial and packaging printing
KEYNOTE: Colour workflows in the motion picture world – How HDR & Wide Gamut change the game (Harald Brendl, ARRI)
5. Colour communication for fashion textile applications
6. Colour Proofing for Packacking & textile applications
7. Colour in 3D (3D Softproof & Appearance measurement)
You can download the presentation of my lecture “Proofing in textile printing: Contract proofs for RGB-(FOGRA58) based textile workflows” here
After the session, there were lively discussions at our Fogra58 stand and the fabric/proof comparisons exhibited were discussed. Special attention was paid to a pattern with different shades of grey by Joe Tschudi. The proof was quite neutral grey for the human eye, but the fabric had a clearly visible green cast. In terms of measurement, however, the two patterns were only DeltaE00 0.3 apart for an i1Pro2, and a ball-head meter also showed a similar distance. A nice example to demonstrate the difficulty between textile printing and proof, between measuring devices and human perception.
Many thanks to Andreas Kraushaar and the entire Fogra team for the excellent organisation and support during the entire Colour Management Symposium. An outstanding event that shows current developments in colour management and broadens the view to new markets and segments.
Shortly before Christmas, we initiated a major shop update, and adapted and improved numerous detail functions. But we are especially pleased that the update went without any major disruption for our customers, and that the shop was online and accessible for only a few hours, even though the update had to be carried out at the live shop.
The most important point for us was to update the upload area. The new file upload can now process up to 2GB per file and up to 50 files per article and: The upload now starts automatically, and does not need to be started first. We are thinking about increasing the file limit further here, but we really recommend our customers to simply zip many small files and upload the .zip file before uploading. This helps with the overview, and also helps us in handling.
Another new feature is that now all upload areas of all articles are uploaded in parallel and after successful upload all data is displayed appropriately for the articles. Only after the successful last upload the overview page is updated.
The overview of the loaded data has also improved.
Due to an updated shipping module we have more and more variable shipping methods at our disposal. Thus, starting next year, we will also be able to offer a UPS Express before noon, presumably parallel to the DHL Express before noon.
The most important point for us, however, is that the integration of the external modules has now changed so that we can import updates to the shop without having to touch all external modules at the same time. This will give us a lot of flexibility and allow us to respond even faster to better functions in the future and implement them in the shop.
A lot of changes in the background are security patches and an update to a current PHP version, which makes the shop overall more performant and secure.
Next year we are planning a graphical update of the shop before, which will make the website even clearer and faster.
This year we have again submitted proofs for Fogra certification. We thus prove that we not only deliver outstanding proof quality through internal quality controls and checks, but that the quality of our proofs is also confirmed by an external body. We have therefore had proofs certified for the seventh year in succession.
In 2019 we have made two innovations in Fogra certification.
The quality of our prints and our spot colour reproduction of the PANTONE colours was confirmed by Fogra for all four proof standards.
These new certifications have been implemented on the current software revision Fiery XF 7.1.3 and have been applied to the papers EFI Gravure Proof Paper 4245 Semimatt, EFI Proof Paper 8245OBA Semimatt and EFI Proof Paper 8175OBA Matt.
After the association freieFarbe e.V. had met last year in Tübingen for their annual general meeting, this year we met in a rustic hut in the Appenzeller Land, which Peter Jäger from pre2media and Eric A. Soder from pixsource.com had excellently chosen, just like the sunny weather that should accompany us from Friday to Sunday.
The chairman of the association, Holger Everding from DTP Studio Oldenburg and Jan-Peter Homann from Homann Colormanagement in Berlin arrived in Tübingen on Thursday, and after a first long night full of discussions and a meeting in the Proof.de office on Friday morning around noon, the three of us continued our journey to Switzerland. After a joint dinner with Peter Jäger and Eric A. Soder (from Tübingen, we had taken some Swabian potato salad and my handmade Maultaschen with us the evening before), an evening full of planning and a strategy workshop for the tasks and goals of the next year began. Without question, this evening was also spent discussing, developing, laughing and working creatively until late into the night between Flensburger Pils, Swiss mountain beer and wine in attractive red and light yellow shades.
After breakfast, we continued on Saturday to swissQprint, where we had the opportunity to learn more about the status quo of large format digital printing from association member Guy Flüeli, as well as visit the production facilities and conduct print tests on the Karibu and other SwissQPrint presses.
We have added 140 additional paper white values from Arctic Paper, Peyer, Igepa, Antalis and Mondi. As a result, a total of almost 1400 paper whites are now available in our database.
From the company Peyer we have added the colour shades of the Surbalin product range, although we have not covered all surfaces individually here. However, we have now also included other Peyer products such as Peytan, Peydur, Peyprint and Comet in the paper white database.
You can find the paper white database at shop.proof.de:
Today a customer called who wanted to order a proof of several HKS N spot colours on an uncoated paper. “Which proof profile should I choose? And how exactly can you match my special colours in the proof? I probably have to proof several HKS N red tones in comparison. By the way, the printing is to be done on Fly Cream, a slightly yellowish paper.”
First of all, I searched with the customer for the production paper in our paper white database. A quick look via full text search revealed that we have measured Fly Cream from Papier Union:
With a B-value in LAB of 9.2, Fly Cream is really not just a little yellowish, as the customer said, but clearly yellowish, chamois, creamy … whatever you want to call it. So it was natural to check the proof profile “ISOUncoatedYellowish”, Fogra 30, to see to what extent the paper white could match.
Together with the customer we looked up our “paper white of proof profiles” table:
Contrary to the customer’s expectations, the paper white of ISOUncoatedYellowish is not even as yellowish as the paper white of the edition paper Fly cream, which is more yellowish by more than 5 steps on the B axis. So it was clear: PSOUncoated as a brighter-free uncoated paper proof standard is clearly too white, ISOUncoatedYellowish is much more suitable.
eciCMYK is the colour space for CMYK print production and complements the other Fogra colour spaces, but in contrast to these it does not represent a specific printing process, but is rather “neutral CMYK”. Due to the large gamut of eciCMYK all classical printing processes can be represented, it can be proofed on modern proofing systems without any problems and corresponds in its characteristics to typical CMYK printing colour spaces.
Proofs in eciCMYK / Fogra 53 can now be easily ordered in our Proof Shop, you can select the profile directly when ordering.
Further information on Fogra 53 can also be found on the homepage of the European Color Initiative ECI. Andreas Kraushaar from Fogra also presented the colour space in the Fogra aktuell issue 201, which you can download for free.
We spectrally measured the paper white tone and the proportion of optical brighteners of over 1,000 papers of the most important paper manufacturers such as Berberich and Papier Union as well as online printing companies such as Flyeralarm and wir-machen-druck.de.
Only a few paper manufacturers currently publish data on paper whiteness and the proportion of optical brighteners in their papers, but only technical indicators such as whiteness according to ISO 2470-2 or CIE ISO 11475. However, designers can hardly record paper whiteness with these values. In addition, it is not possible to read from these data whether and what proportion of optical brighteners the paper has.
Example above: Spectral data comparison of Antalis Coqueror CX 22 white for the measurement standards M0 and M1. Below you can also see the color deviation in Delta-E00 of 1.97 and the two paper white values in LAB and LCH.
Left: CGATS.17 Data for measurement conditions M1 and M0 for paper Antalis Conqueror CX 22 white
We have therefore measured the most important papers and dyes of all central paper producers and paper distributors as well as online printers in the three measurement standards M0, M1 and M2. From the difference in the paper whiteness of the two measurements M2 (UV cut without UV portion) and M1 (ISO 3664:2009 with noticeable UV portion), we determined the color distance on the yellow-blue axis of LAB in Delta-b and derived from this the proportion of optical brighteners according to Delta-B according to ISO 15397 and evaluated it.
Parallel to the images of the spectra, we have also provided spectral data in CGATS format for the measurement modes M0, M1 and M2, which can be downloaded for any paper. These values can be used, for example, in proofing software to calculate a paper white simulation for a specific production paper.
After almost a year of work the time has finally come. The CIELAB HLC Colour Atlas XL saw the light of day. The new HLC Colour Atlas XL is the basis for all stages of professional colour communication – from design to the finished product. The standard version contains 2040, the new XL version even 13283 mathematically-systematically graded CIELAB colour tones on 74 pages.
The free file package contains the layer PDF version with several gamuts for the analysis and research of colors, as well as the spectral data (380-730 nm) of all color tones for recipe software, an Excel table with the measured values and spectra as well as color value tables for all common CMYK color spaces and sRGB. All files are available for free download under a CC license.
Only the HLC Color Atlas XL printed by Proof GmbH is subject to a fee, as production is very labour-intensive and cost-intensive. We at freieFarbe e.V. and Proof GmbH see the “CIELAB HLC Colour Atlas XL” as a genuine, transparent and high-precision alternative to the hundreds of proprietary colour systems, which often make fast and precise cross-media communication in design and production very difficult.
A few days ago, our DIN SPEC 16699 “Open Colour Communication” was published and is now available for free download from DIN’s Beuth-Verlag.
Matthias Betz from Proof GmbH, Holger Everding from DTP Studio Oldenburg, Jan-Peter Homann from Homann Colormanagement in Berlin and Eric. A Soder from Pixsource in Switzerland, all members of the association freieFarbe e.V., have shown in the bilingual DIN specification a way to create high-precision color samples on the basis of open source, license-free standards and have shown ways for cross-media color communication.
The 44-page PDF is bilingual in German and English and can be ordered directly from Beuth Verlag, which distributes the DIN standards in Germany, and downloaded free of charge after a short registration.
On the last weekend in September the general meeting of the association freieFarbe e.V. took place in Tübingen. From Friday to Sunday, the members worked, discussed, conceived and, as you can see on the picture, ” punted” in and with new products and ideas in the best weather on the Neckar river.
After a meeting with the colour management specialists from GMG on Friday, who support the association with software and proofing media, work continued on the new CIELAB HLC Colour Atlas in the afternoon, to wrap up the day with tarte flambée and wine at Matthias Betz’ house.
On Saturday, the general meeting followed at Lorettoplatz at Proof GmbH, where the past year was discussed and the coming year was touched upon. With the CIELAB HLC Colour Atlas and the DIN SPEC 16699 Open Colour Communication much was reached and accomplished, but numerous ideas need to be evaluated, weighted, financed and worked on.
Present were: From Germany Matthias Betz from Proof GmbH as this year’s host, Jan-Peter Homann from Homann Colormanagement in Berlin, Holger Everding from DTP Studio in Oldenburg and the Swiss Peter Jäger from pre2media in Hombrechtikon, Eric A. Soder from pixsource in Uster and Matteo Baschera from galledia in Zurich.
We received a call from a new customer today: He proofs for Chinese suppliers, and up to now he is producing proofs in Japan Color 2001 Coated (JapanColor2001Coated.icc). We had not yet set up the profile in our RIP, but within a short time we were able to load the profile into our RIP, create workflows, and make the profile available for order in the shop.
We proof more than 50 international proof standards, but there are always one or two standards that we do not yet offer. Often ink manufacturers or paper producers also offer ICC profiles like Aniva or Heaven42 and the Munken, Amber and Arctic paper series from Arctic Paper. Or have you measured a house standard for your printing parameters which you would like to use for proofs? Then please contact us. We will be happy to support you.
In order to implement the EU General Data Protection Regulation also in the shop in conformity, we have updated the shop in the last weeks, applied security patches and implemented important innovations for the protection of your personal data. We would like to briefly introduce some important changes:
Also for us the shop update offers some positive innovations. Following the discontinuation of DHL’s old Intraship service, we can now also create automatic shipping labels for parcels via the new “Send” feature of the DHL Business Customer Portal. Another new feature is that we can now digitally frank address labels for our DIN B4 envelopes using digital stamps and therefore no longer require normal stamps. This is particularly interesting for us when mailing abroad with registered mail, which used to be a tedious process at the online post office, which is now automated. And we can switch between orders more easily.
The next updates are already in planning. Especially the upload area is currently being technically replanned by an external developer, because with the next update the way of embedding extensions in the shop will also change. Probably later in summer the next update will be available as soon as the new modules are available and we have been able to test them thoroughly.
It has taken almost a year, but we are all the more pleased now: The “CIELAB HLC Colour Atlas” is completed and can be ordered in our shop. The HLC Colour Atlas is a open source, high-precision colour system based on open standards.
The CIELAB HLC Colour Atlas offers professional users of colour three decisive advantages:
Recently, Fogra provided the first web offset printing condition based on the new ISO 12647-2:2013 with the printing condition FOGRA54. Fogra 54 describes standardised offset printing in AM screen (48-70’cm) on supercalendered B-substance material (SC-B) with mineral oil-free printing inks.
The ECI writes: “Mainly due to paper differences, the printing condition on today’s SC-B paper types no longer matches the characterization data set FOGRA40 and the profile »SC paper (ECI)«. As a consequence, when printing on SC-B paper, printers face significant problems to achieve the ink solid aim values of »FOGRA40« and the higher saturated colour appearance of »SC Paper« proof prints. In addition new aim values, especially new dot gain curves of the international printing standard ISO12647-2:2013) are reflected in the new printing condition.
PSO SC-B Paper v3
SC-B Paper, Super calendered Papier, calendered
Paper: Commercial offset, SC-B paper (super-calendered, satin), printing condition PC6
Tone value increase curve 2013-B, white measurement base.
Characterisation Data: FOGRA54
freeColor e. V. is a consortium of German and Swiss color experts who work to produce consistent color in all areas of application. Sounds reasonable? Exactly. That is the issue that is of central importance to our proofing customers. Therefore we are currently working in a project with the colleagues of FreieFarbe e. V. and are now also as Proof GmbH member and partner of FreieFarbe e. V.
FreeColor relies on open standards such as LAB and HLC, which have long been integrated in computer software and want to show: the computer is an ideal tool for color, it can make color free! The association FreieFarbe e. V. aims to promote colour communication without pursuing commercial goals.
freeColor e. V. would like to promote developments that…
In recent months, Holger Everding, Peter Jäger, Eric A. Soder and Jan-Peter Homann have developed a completely new approach to this, which we were able to develop together with our colleagues into a product that we will present shortly.
We would like to take this opportunity to point out a great feature of the website of FreieFarbe. de: The colour database: Here you can look up the most important colour values for more than 300 colour systems and calculate colour comparisons of all kinds.
For the work within the association FreieFarbe e. V. the association is always looking for competent companions. If you, like us, are touched by the subject of colour in a variety of ways, there are many opportunities at fF to contribute with your knowledge and strengths. If you feel like our good cause, please contact us!
The ISO 12647-7 proofing standard was revised in November 2016 and the test criteria for FograCert contract proof creation were adapted. We have now incorporated these changed criteria into our proofing system and are now working to the stricter tolerances of the latest ISO 12647-7:2016.
The good news is: you won’t notice that our proofs are now precisely produced according to the latest standards. Why? Quite simply: Because our demands on our proofing system, our FIERY proofing software, our EFI proofing papers and the X-Rite measuring decvices are already so high that all components of our proofing system – and of course our proofs themselves – have been meeting the new criteria of the revised November 2016 standard for years.
The new standard brings the classical formula for the colour distance Delta-E from the traditional definition of 1976 (CIELAB 1976) to the updated version of 2000 (CIEDE2000). Since the values cannot be converted directly, new tolerances for the test report are introduced, which are valid immediately. These new tolerances and new criteria are also the only difference that you will notice on our proof when you take a closer look at it.
Why this change: Fogra used measurements from the 116 Contract Proof Certifications from 2016 to show that the old and new tolerances of the old? These colors have so far had a? E-value that is too high in relation to the visual assessment. The new Delta-E values, on the other hand, are much more “equidistant”, i. e. with the human assessment of the colour distance, which Fogra has also demonstrated in tests.
The deviations of the gray axis and hue are now also determined more precisely, the evaluation of the hue spacing? You can also see this on the test report. The Fogra writes:”Since HC mainly depends on the hue angle, the evaluation of neutral grey or similar colours with sometimes very large differences in brightness and saturation did not yield meaningful results. The measure?Ch now describes the actual distance of a color pair in the CIEa*b* plane and is therefore no longer suitable only for the evaluation of the colorfulness difference of very rich colors.
The ageing tests for proof papers were clarified more clearly with the introduction of the new standard. All certified proof papers undergo the following tests: (more…)
The WAN-IFRA Standard Profile for newsprint “ISOnewspaper26v4.icc” is contained in countless newspaper printing specifications around the world, almost every German newspaper is printing to this proven standard.
Now the IFRA has placed a successor with the new ISO Newspaper 26v5 to the starting line, that increasingly conquers market shares. The new profile adapts the changes in ISO 12647-3: 2013, in particular with a decreased total ink coverage. The current ICC Profill called ISOnewspaper26v5.icc contains a total ink coverage of 220% and a dot gain of 26%. The name of the new profile is “WAN IFRAnewspaper26v5.icc”. The new newspaper printing profileWAN-IFRAnewspaper26v5 Proof Profil available.
Since today we offer proofs in ISONewspaper26v5.