Understanding Generic Profiles. Today, most color devices come with device profiles created by the manufacturer. These are known as generic, or canned, profiles because they represent averaged data from a particular device model as it behaved in the factory. The manufacturer will typically follow the process described in the preceding section and in other lessons in this book to create.
Jan 13, 2019. The original US Web Coated (SWOP) v2 profile has been around for a while but is slowly being replaced by the more accurate and up to date WebCoatedSWOP2006Grade3.icc and WebCoatedSWOP 2006Grade5.icc profiles. They are installed with CS4 and CS5. One of the main differences between SWOP and a Sheetfed press is the amount of ink viscosity. Us Web Coated Swop V2 Profile Download For Graphics Those CMYK options are split between those for covered and uncoated document, and sheet-fed or internet printing pushes. The GRACol user profile (General Specifications for Programs in Commercial Offset Lithography) provides press dimension data to end up being utilized to make information for. Oct 11, 2017.
Dear InDesigners,
In our studio (European, Netherlands) we get a lot of images from US colleagues which contain the 'US web coated SWOP v2' profile.
Our workflow is mainly based on Adobe RGB images and some Fogra39 CMYK images (for greater control in printing).a
What is the best method to convert these 'US images' ? Should we convert them to Adobe RGB straight away.. Or keep them CMYK but convert to Fogra39? And is it possible any differences occur while doing so?
Most of the time we work with west-European printers and provide them with certified pdfs, the Fogra39 profile embedded.
Thanks in advance!
Moris
In our studio (European, Netherlands) we get a lot of images from US colleagues which contain the 'US web coated SWOP v2' profile.
Our workflow is mainly based on Adobe RGB images and some Fogra39 CMYK images (for greater control in printing).a
What is the best method to convert these 'US images' ? Should we convert them to Adobe RGB straight away.. Or keep them CMYK but convert to Fogra39? And is it possible any differences occur while doing so?
Most of the time we work with west-European printers and provide them with certified pdfs, the Fogra39 profile embedded.
Thanks in advance!
Moris
Thanks guys, that was helpful.
I will ask some of our regular printers if they know what's best for both of us.
@ Cdflash - Fyi the images are mainly product shots en environmentals of electronic products. So the product shots are meant to have a similar look & feel to them. So I assume it's done for consistency yeah. Our photographer delivers all final images in Adobe RGB though, so we already have a big difference in those.
I always set the CS colour settings in Bridge for all our workstations, so anybody opening 'us-images' is getting a 'warning'.
@Dov - We would convert to Adobe RGB in case on any 'significant' retouching. For example implementing product renders of adding gradients, masks etc.
So you guys suggest to leave the 'us-images' untouched, import them where needed in InDesign and let the 'Export to pdf..' with the Fogra39 profile settings do the conversion.What you're saying is that the 4-3-4 (don' fully understand though) conversion of Photoshop is less good than a conversion done InDesign Export?
Thing is we do provide third parties with our images sometime and we're not sure about their expertise. So I'd rather have all images send out being in as few colour profiles as possible. Also we use some images for Newspaper print, so we have to convert those anyways to a different profile.
I guess I could go back to the US colleagues and ask if they want to keep and share the original RGB images (if available from the start) with us.
We're at the verge of changing our image server structure (established 10 years ago) and I'm trying to structurise the workflow. Don't want to make decisions now, that'll later will appear inefficient or flawed.
Again thanks for your time and knowledge.
Moris
I will ask some of our regular printers if they know what's best for both of us.
@ Cdflash - Fyi the images are mainly product shots en environmentals of electronic products. So the product shots are meant to have a similar look & feel to them. So I assume it's done for consistency yeah. Our photographer delivers all final images in Adobe RGB though, so we already have a big difference in those.
I always set the CS colour settings in Bridge for all our workstations, so anybody opening 'us-images' is getting a 'warning'.
@Dov - We would convert to Adobe RGB in case on any 'significant' retouching. For example implementing product renders of adding gradients, masks etc.
So you guys suggest to leave the 'us-images' untouched, import them where needed in InDesign and let the 'Export to pdf..' with the Fogra39 profile settings do the conversion.What you're saying is that the 4-3-4 (don' fully understand though) conversion of Photoshop is less good than a conversion done InDesign Export?
Thing is we do provide third parties with our images sometime and we're not sure about their expertise. So I'd rather have all images send out being in as few colour profiles as possible. Also we use some images for Newspaper print, so we have to convert those anyways to a different profile.
I guess I could go back to the US colleagues and ask if they want to keep and share the original RGB images (if available from the start) with us.
We're at the verge of changing our image server structure (established 10 years ago) and I'm trying to structurise the workflow. Don't want to make decisions now, that'll later will appear inefficient or flawed.
Again thanks for your time and knowledge.
Moris
Similar Messages
- How do I get an SVG file to the same color profile as my illustrator file (U.S. Web Coated (SWOP) v2 and what would be the correct color profile for printing on a shirt?
Thank you.dadanas wrote:
Hi Simcah, I have a similar problem. Have you found out any solution?
thanks, dan
You need to ask the printing service provider. Dealing with color totally depends on the printing process involved and of course the machines used. - Hey guys,
This might seem like a bit of a n00b question, but I really can't find this info any which way I Google it.
What is the default dot gain setting in the US Web Coated SWOP v2 profile?
Allow me to explain my dilema:
My printer told me to use the US Web Coated SWOP v2 this profile for a catalog we're printing. 4/4 on 100# gloss book stock. However I've used that profile in the past and the prints came out darker than I expected them to. I don't have a high enough quality printer to be able to test this in-house, but I'm pretty sure my monitor is not overly bright or set to an overly high contrast level. They indicated to me that their standard dot gain is about 10-15%
I assumed the SWOP v2 profile accounted for 20% dot gain as that appears to be the default for many of the other color settings, but I've never known for sure. I'm trying to decide if I need to use a custom profile with a higher dot gain setting.
Thanks for any help!
KenzierHello Kenzier,
the ICC-profile US Web Coated SWOP contains a tone reproduction curve (TRC)
which cannot be characterized accurately by Dot Gain or Gamma.
For the entry in Color Settings > Gray we can proceed as follows:
Color Settings > Gray > Load gray > (click on) USWebCoatedSWOP.icc > Save gray
This saves a 'Black-ink-profile' with a similar name, which replaces Dot Gain
or Gamma settings.
This profile can be interpreted by the program ICC Profile Inspector (free):
Here we have kTRC (black ink tone reproduction curve), the red line.
With the auxiliary black diagonal one can read the effective dot gain 20%,
the blue line.
The printer should tell you a profile which is representative (a good approximation)
for his actual process.
Best regards --Gernot Hoffmann - The default/generic CMYK of choice is described as U.S. Web Coated (SWOP) v2. That is also the CMYK space inclued in the North American General Purpose 2 sychronized color setting in Bridge.
But - if you download the folder of ICC profiles from the Adobe website, there is no such file inside. There is one called USWebCoatedSWOP.icc. Is that the same thing?
Also, can someone tell me where the ICC profiles that shipped with my Creative Suite programs reside on my hard drive? I'm using CS4 on a Mac.'There is one called USWebCoatedSWOP.icc. Is that the same thing?'
Yes, that is the same profile. Profiles have an internal and an external name and they're not always the same. If you double click on that profile and open it in the ColorSync Utility, you'll see the more commonly used name there.
'Also, can someone tell me where the ICC profiles that shipped with my Creative Suite programs reside on my hard drive?'
Macintosh HD>Library>ColorSync>Profiles>Recommended - Hi There,
I am trying to install the CMYK print profile: US Web Coated (SWOP) v2 to use in Adobe Lightroom 4.
I have downloaded the bundle from the adobe website, extracted the files, right clicked on the file named USWebCoatedSWOP and selected install profile. Yet when I go into lightroom to find the profile it is not there.
I have downloaded fuji print profiles from another site, but these were not from a bundle and downloaded directly from chrome, which I had no problems with.
Is there another way to install this profile?
Thanks in advanceThank you. That makes a lot of sense now. Have a nice day. - is it better to work on an image in the icc profile than in sRGBIt depends. If you know positively that's the profile that will be used, you can do that (a lot of people use it just because it happens to be the Photoshop default).
Pro: you'll be working within Web Coated SWOP's limited gamut from the start, so you won't be disappointed when some colors are clipped in the final conversion. And they would be, because US Web Coated SWOP v2 is a very small color space. Don't expect deep saturated blues, for instance, because you won't get it.
Contra: You have to be very careful to not exceed TAC, total area coverage, while you work. This is the total amount of ink the paper can hold without smearing and/or drying issues. If you convert from an RGB profile this is taken care of automatically, because TAC is specified in the profile, but an adjustment in CMYK can easily push you over the limit. Can't recall what the specific limit is in this case, but somewhere around 300 to 310% should be safe. Ask the printer. You have to monitor this continually. - Hi,
The printing company for our photo book on Loons, uses roll fed web presses. They have asked for a pdf set to X-1a.
First soft proof was light and washed out. Printer had us increase saturation and contrast. Second proof
all our blue water photos come out more purple then blue.
We currently used srgb jpeg photos embedded in a ms word document. We used acrobat 11 to create the pdf using the request X-1a
setting.
Should we have converted the photos in photoshop to the requested setting first and then embedded them in word?
Thanks for any help.Can you show us screen shots of your X-1 PDF Settings ( i.e., Color )? The reason why I ask is my default Distiller PDF-X1a:2001 Settings use a working space of RGB = sRGB IEC61966-2.1; and CMYK = US Web Coated (SWOP) v2 with the 'Color Management Policies: 'Convert All Colors to CMYK' ( default ); Rendering Intent ( default is 'Preserve' ). Have you discussed these settings with the print service provider? These settings, if they are identical in Acrobat 11, would appear to have the same RGB work space as your original sRGB based pics. I sense that Word, although not a color managed application, would work as an image carrier into Acrobat 11 where the image files may retain their profiles going into Acrobat 11 and remain intact going out of Acrobat 11 via a PDF-X1a. In which case, the print service provider then RIP and Prints the file for a hardcopy proof. In your case, the previous digital printer did a good job reproducing the photos as you supplied them, Word or no Word. The question now becomes what changed with this new service provider? Their prepress people must of accepted your documents and pushed them through their workflow. So, what changed? I know of no way to 'swap' images using Acrobat. In your case, it may be a matter of saving a second set of files or the entire book document as a copy and replacing the pics in that file, then create a second PDF-X1a file. And, as a third option, use InDesign ( however, no point in using it until you've determined where the problem with quality lies ). If I assume the printer told you that the sRGB files were sufficient and, if you used the X-1 PDF Settings when Saving As > PDF, that would be their preferred workflow and the image files rendered dull and unsaturated ( as they did in your case ), and the printer recommended you increase the saturation and HUE of the images ( which he did ) and the entire workflow worked for a digital printer in the past ( which it did ), then something changed with this new print service provider. You have to find out from them what it could be. It could be something with their direct-to-plate equipment. I believe it merits further research and development with the new service provider. There is a solution. You just have to find it.
'Once the pdf is created could I swap out the photos
for ones that had been converted from RGB to CMYK in photoshop with Rendering Intent and Black Point Compensation etc. filled. '..
Wait a minute. You did a RGB-to-CMYK conversion in Photoshop? Why? I thought you embedded the RGB files in Word? Then, Acrobat did the conversion using the X-1 settings mentioned above.
'How hard would it be to dump my word document into InDesign with the newly created RGB or CMYK photos would it work better? Is the learning curve too much of a hassle for one off?'..
Yes it would. But, your procedures worked for the digital printer. Why not now with the new printer? That's my question. Since Acrobat's X-1 settings have a work space of sRGB ( assumed ), then your sRGB files should render appropriately and they do not. You have to find out what works for this new print service provider and, whatever Photoshop Color Setting RGB workspace you use, use it in Acrobat 11. Discuss the entire document and Photoshop setups with the new print service provider. - Hello, Everyone. I have a question that I have struggled to crack on my own to no avail. I hope someone here can help.
I am trying to publish some images to the web using color corrected monitors, RAW format, and a color checker passport to create a perfeect color profile. Here are the technical details and my workflow.
Camera: Canon Rebel EOS Xsi
Format: RAW + L
Color Space: sRGB
Color Checker: X-Rite ColorChecker Passport
Monitor Calibrator: Spyder4 Pro, fully updated software
Computer: Lenovo T420 ThinkPad
Second monitor: Samsung LED SyncMaster SA350 (NVIDIA)
Photoshop: v12.1 x64 (CS5.5)
Photoshop Color Settings: Custom North America Web/Internet
RGB: sRGB IEC61966-2.1
CMYK: U.S. Web Coated (SWOP) v2
Gray: Gray GAmma 2.2
Spot: Dot Grain 20%
Policies
RGB: Preserve Embedded Profiles
CMYK: Preserve Embedded Profiles
Gray: Preserve Embedded Profiles
After importing the image into Photoshop, I make sure the RAW space is set to sRGB IEC6 1966-2.1
Use the eyedropper to select a neutral color one step away from pure white on the RAW image of the color checker, create and set the custom white balance.
set the white balance
Export the image as a DNG
Load the DNG into the X-Rite ColorChecker Passport software to create a color profile
Back to Photoshop
Open the RAW file
Set the white balance to the custom profile created above
Set the color profile created with X-Rite
Open the color-corrected image in Photoshop (see color setting above)
Save as JPEG
Publish
First, everything seems to go great throughout this entire process, until I see the image on the Web: LINK. Once published, the image has a very noticible golden-yellow tint to it. The color-corrected image looks great on both color-calibrated monitors, in RAW and JPEG. Absolutely perfect. After noticing the ugly yellow tint in the image I posted to the Web, however, I became aware of a couple more weird things.
1) When the JPEG was open in Photoshop and I moved the window that contained the image around on my second monitor, the image immediately took on that golden-yellow tint: you can see a screen shot of the color corrected image on my Samsung (bottom) and the yellow version of the same image created when I drag the window around on the Samsung (top) HERE.
2) When opening the X-Rite software, I got a warning saying that the laptop monitor had been calibrated, but that the Samsung had not. I got this error even if I calibrated the Samsung monitor right before using X-Rite. Also, the monitor is definitely calibrated, because the images look great, and the colors match what I see on the laptop.
3) Recently, I noticed that when waking my computer from sleep, the Samsung monitor no longer holds its Datacolor (Spyder4) calibration.
I thought the problem I was having might be due to the monitor, for the reasons stated above. However, I later noticed that when I open the color-corrected JPEG with the default Windows image viewer, it retains the color correction settings. The image looks fantastic, and doesn't lose it's color profile when I drag the window around. Also, there seems to be less color loss in the Word documents and PDFs I included this image in: LINK.
I checked this with several more images, and the results are the exact same. I scoured the Web as best I could, but my problem seems to be pretty unique. Does anyone have an idea what might be causing this?
Thank you!Thank you, twenty_one, for taking the time to read my post and put up a reply. I am going to rebuild my question and post it again here. But first, to answer some of your points:
1. A raw file has no color space, until it's opened into one in the raw converter. So this is controlled in ACR, not the camera.
I just wanted to be as thorough as possible. One of the steps I took was to set the Color Space setting in my camera to sRGB:
2. White balance has no bearing whatsoever on camera profiles. A profile is not for white balancing, it's to account for the spectral distribution of the light, which is something else. You make the profile and assign it in ACR, then you white balance for processing.
I know. I wasn't talking about white balance in my camera. I set the white balance here:
I grabbed the color for setting the WB here:
3. If you get a message about monitor calibration upon opening the camera calibration software, something is seriously confused. The two have nothing to do with each other. No relation whatsoever.
Camera calibration software?
4. A corrupted monitor profile will only show up in Photoshop and other color managed software. Other applications that are not color managed will not use the profile and are not affected. So find out which apps are and which aren't before drawing any conclusions.
Agreed. That's partly what I am trying to get help with.
5. Your links don't work, and in any case clicking on links is something most people including myself dislike. It's much better to insert screenshots in the post, by using the camera icon in the reply box.
I'm new to this forum, so this is helpful to know. This image shows the color-corrected image (bottom) on my Samsung. It looks exactly the same in the same window on my laptop monitor. When I move that window around on my Samsung screen, it turns gold (top). The image, when posted to the web, looks *similar* to that gold color.
So let's say I only use Photoshop on my laptop, which is not displaying any colors. Do you think the golden hue problem will go away? - Whenever I flatten and save a graphic for web and try to go back and reopen it, all of the colors go to a funny neon. It doesn't let me adjust the colors back completely either. It also happens when I open screenshots. Any idea why this is happening all of the sudden? It didn't used to do this and then just started. I haven't changed anything except maybe did an update to Photoshop. Any ideas?I have my settings at custom. Color management is set to 'preserve embedded profiles.'
My working spaces are prophoto RGB for RGB and US Web Coated SWOP v2 for CMYK.
I haven't ever gone in and changed any of these before. Should I? - Hey i wonder if anyone can help with this. We have recently purchased a new imac with Illustrator cs5 included upgrading from a G5 with illustrator cs2. As we are in the UK we would like to set the color settings to euroscale coated v2 bu there does not seem to be an option for this in the color settings in illustrator..the only options are US web coated (swop) and settings for japan...as we print digital prints we need to have the euro color settings but the options are not in cs 5 as they are in cs2.
Please could someone tell me if its possible to download the settings or is there is another setting we could use.
thank youIt's an somewhat outdated profile.
You should check http://eci.org/doku.php?id=en:start for more recent color profiles. Also check with your printing service. - Hello there
I am using PDF Generator (from LiveCycle ES3) to convert WORD documents and images to pdfs.
In the PDF Generator settings, I am setting the 'Compliance Standard' to 'PDF/X-3' and the 'output intent profile name' to 'U.S. Web Coated (SWOP) v2'.
Am I able to check (and more importantly verify to my client) that these settings have been applied to the resultant pdf?
When I open the resultant pdf in Acrobat Pro, in 'Document Properties', the PDF version is stated as 1.3 (Acrobat 4.x). However, there is no mention of 'x'.
In the preflight dialog, I can check the compliance of the document against the various PDF/X standards, however there is no statement of what the current version is. Awaken 6 2 12. Moreover, the button to analyze the pdf against the various 'output intents' (SWOP, Japan Color Coated and Coated FOGRA39) is greyed out (I am able to 'analyze and fix' against each of these options, but again there is no indication of what the current output intent is).
There are no custom properties in the Custom settings tab of the Document Properties dialog (if I save the pdf using 'analyze and fix', a value of 'PDF/X-3:2002' is created for the custom property 'GTS_PDFXVersion' in the new pdf).
Many thanks
Geoff OldingHi,
Knowing a PDF file's version premits deduction of what version 'compatibility' is present.
Version 1.7 (Acrobat 8.x) lacks compatibility for Acrobat 9.x specific features.
Version 1.6 (Acrobat 7.x) lacks compatibility for Acrobat 8.x specific features.
And so forth.
Certainly, not an elegantly simple approach; but, nevertheless it is functional.
Using Acrobat Professional/Extended 9.x -
Open the Preflight dialog.
Advanced > Preflight
From the Options drop-down menu, Select 'New Preflight Profile'.
The Prefight: Edit Profile dialog opens.
A default profile name is provided (New Profile <number>).
Initially, Click the Save button to save the profile. You can rename it later.
Note that 'New Profile' is placed in 'Custom
Now, locate your 'New Profile' in the column at the left of the dialog and select
'Custom checks'.
The available custom checks list loads in the pane to the right.
Above and to the right is a 'Find' field.
Enter the string 'version'.
A filtered list appears.
A custom check is available for 'versions newer than':
1.2 | 1.3 | 1.4 | 1.5 | 1.6 | 1.7
and there is a custom check for 'version older than 1.3'.
Add the desired custom check to the profile. Save.
Configure the check for Error | Warning | Info
Info is 'Notification' in the report that can be provided.
Once you have configured 'New Profile' it can be used by a Batch Sequence to check multiple files.
When a Preflight is selected for use by a Batch Sequence you can configure for a 'on success' and/or 'on error' report.
Be well.. - Hi
I am doing brochure's for my company. I am from South Africa.
I use Illustrator for the brochure, Layout and Text.
Last month the printer had problems with printing the brochure. I discovered my settings are wrong.
This was the settings:
Colour Setting
Settings: Custom
WorkingSpace
RGB: sRGB IEC61966-2. 1
CMYK: U.S. Web Coated (SWOP) v2
Color Management Policies:
RGB: Off
CMYK: Preserve Numbers (Ignore Linked Profiles)
Profile Mismatches: Ask When Opening (ticked)
Ask When Pasting ( Not Ticked)
Missing profiles: Ask When Opening (Ticked)
Then I did research On Adobe Community Help and changed it to the below but its wrong too
Colour Setting
Settings: Europe Prepress 3
WorkingSpace
RGB: Adobe RGB (1998)
CMYK: Coated FOGRA39 (ISO 12647-2:2004)
Color Management Policies:
RGB: Preserve Embedded Profiles
CMYK: Preserve Numbers (Ignore Linked Profiles)
Profile Mismatches: Ask When Opening (ticked)
Ask When Pasting (Ticked)
Missing profiles: Ask When Opening (Ticked)
Alfred powerpack 3 7 (937)b. Can someone help me to set it right according to RSA printers settings, something like a default setting.
Last Month the printer said the below:
- fonts are not embedded.
- black is not on overprint and is 4 colour black
I never had this problem before, so I have no idea what went wrong all of a sudden.
Now when I open my prevoius work on Illustrator or Photoshop, a small window pops up saying work is not according to this settings, etc.
Please help. Im desperate.
I need to start my new brochure tomorrow
Thank you in advance
KajalYou should get a preflight checklist from your print vendor. Here's what I have set in Illustrator..
You should also send the print vendor a press-ready PDF. Not all of the file problems are limted to color settings. For instance..
'Last Month the printer said the below:
- fonts are not embedded. '
When you Save As > EPS, select 'Include Fonts' in the selection process; and when Save As > Press Quality PDF, select 'Embed Fonts' in the Settings dialogs.
'- black is not on overprint and is 4 colour black'
In Preferences > Appearance of Black, select 'Accurate Black' in both screen and print; in your file, set appropriate Black elements to Overprint in the Color 'Attributes' dialog.
Whenever you are not sure what the printer is talking about, ask them to explain what they mean and help you fix the problems. If they refuse, ask them where you can get help. Most good shops will be willing to help you. - Hi,
I have synchronized my colour settings in bridge to be the same across all my Adobe software, it's currently on Europe Prepress 3 because that's what I've been taught is correct in Australia. I have a colour swatch of C:0 M:90 Y:15 K:0 and when I change the colour slider to RGB in photoshop is gives me the values: R:200 G:53 B:122 (not sure if this is a good way of converting the colours?)
My initial swatch:
When I key this exact RGB value online it gives me a much darker swatch:
So using multiple cmyk to rgb online converters (to compare) I key in my initial cmyk values and the rgb swatch it converts to is so much brighter and gives me the values R: 255 G:25 B:217
I know I'm doing something wrong. I hope someone can help me with this!
Thanks in advance!This is about 1) different color spaces which will have different numbers for the same color, and 2) gamut limitations going from one space to another (some color spaces are bigger than others and can contain more saturated colors).
'Europe Prepress 3' is just a preset. It sets Adobe RGB as working RGB, and FOGRA39 as working CMYK. When you go online, however, you'll most likely get numbers corresponding to sRGB and US Web Coated (SWOP) v2, because these are the Photoshop defaults (but have no particular significance beyond that). IOW there are no such things as 'RGB' and 'CMYK' - only specific RGB color spaces and specific CMYK color spaces.
In different color spaces, such as sRGB vs. Adobe RGB, the same color is represented by different values. That's why you have to convert from one to the other. - I have seen many discusions about ink limits and colour profiles but can anyone offer a dummies' guide?!
I use CS5 and in Bridge it is set to Europe Prepress 3. My understanding is that this should take care of things but when I make a PDF of my job and preflight it in Acrobat I get an ink limit warning. The profile of the placed Photoshop file (which is CMYK) is FOGRA39, as is the InDesign file (obviously, as this is defined by Prepress 3). So if I make a PDF X-1a shouldn't all that control the ink limit?
I have found that if I switch the Photoshop file to RGB then it works fine - I can see in InDesign separations preview that ink is OK, and the PDF preflights OK in Acrobat. So that tells me that the ink control happens when a conversion is required. The general wisdom seems to be that for CMYK print, files linked to InDesign should be CMYK not RGB (though to me, RGB seems to work fine as it gets converted at PDF stage), so how do I limit the ink if the file is CMYK? Should my Photoshop file not be colour managed perhaps? I read in a forum that Photoshop restricts the ink limit according to the colour profile being used, but that doesn't seem to be happening for me.*
I called Adobe and their best shot was that I should switch CS5 to North America Prepress, and use the 'High Quality Print' PDF preset. Well maybe I'm taking it too literally, but I'm In England and have a job which is about to be printed in Hungary! And also, this yields a US Web Coated (SWOP) v2 profile which doesn't seem right as I will be printing sheetfed.
I would appreciate it if someone could straighten me out.
* I tested this by switching the Photoshop file to Web Coated FOGRA28 and the colour values did change to allow for a lower ink limit, so maybe there's something in that. So why doesn't FOGRA39 do it? With the colour set to FOGRA39 Photoshop happily accepts a nice black blob coloured as 100% each of C,M,Y and K.
Sorry if this is a bit long but it seems like a useful discussion for Colour management newbies.I read in a forum that Photoshop restricts the ink limit according to the colour profile being used, but that doesn't seem to be happening for me.*
Total Ink limit is a parameter of a CMYK profile—so the limit won't be exceeded when you make a color conversion from any other color space into that profile's color space, i.e AdobeRGB>FOGRA39, or US Sheetfed Coated>FOGRA39. However, once the file is converted to CMYK there's nothing stopping me from exceeding the limit via a color correction. For example, I could convert a PS file filled with 0|0|0 RGB to FOGRA39 CMYK and the ink limit would not exceed the 330% defined in the FOGRA39 profile, but as you noted I could also fill the resulting CMYK file with 100|100|100|100 and exceed the 330% limit.
Also, there's nothing stopping me from assigning the FOGRA39 profile to any CMYK file. In that case there's no color conversion—I could make a new SWOP Coated CMYK file, fill it with 100|100|100|100, assign FOGRA39, and the fill would still have 400% total ink.
Total ink is only limited via a color conversion
The general wisdom seems to be that for CMYK print, files linked to InDesign should be CMYK not RGB (though to me, RGB seems to work fine as it gets converted at PDF stage)
The general wisdom is actually old conventional wisdom, there's nothing wrong with making the conversion from RGB to CMYK when you export—the resulting CMYK values will be no different than the ones you would get out of PS assuming the source and destination profiles, and rendering intents are the same. The no RGB rule is a hangover from when you couldn't make color managed color conversions inside a page layout program. - When we save a file to a pdf from photoshop cc the pdf will show some clipping of color , as if the color disappeared on the pdf. what steps are needed so this doesn't occur?Thank you for responding. Below is some info.
Please see the clipping on the 'd' in Pastel Bond and White Bond and the rounded part of the 'R' in 2 &3 Part NCR. We have had this happen on occasion with other files as well. Thanks for the help.
save as > photoshop PDF
First dialogue box:
Save: layers (checked)
color: embed color profile: U.S. web coated (SWOP) ..
Second dialogue box: high quality print
options: none checked
viewing PDF in preview on mac
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If you are one of the millions of people that think converting to CMYK simply means going to Image / Mode / CMYK and viola you have a CMYK image ready for press, you may want to think again. The reality is that there are numerous flavours of CMYK, from Web to Sheetfed and coated to uncoated. Simply choosing the default may not be your best choice. The goal is to target your image using the correct flavour of CMYK. But what are the specific printing conditions or flavours? Lets break them down.
SWOP, Web Press
Everyone has heard of SWOP (Specifications for Web Offset Publications) but not everyone knows what SWOP means as it pertains to their image and its reproduction. The original US Web Coated (SWOP) v2 profile has been around for a while but is slowly being replaced by the more accurate and up to date WebCoatedSWOP2006Grade3.icc and WebCoatedSWOP 2006Grade5.icc profiles. They are installed with CS4 and CS5.
One of the main differences between SWOP and a Sheetfed press is the amount of ink viscosity or thickness. The US Web Coated (SWOP) v2 profile puts down an ink volume close to 300% total area coverage in the darkest tones compared to 340-350 for sheetfed.
But what else makes a Web press unique? Web presses are faster, up to 40,000 impressions per hour and are designed for longer run lengths (20,000 impressions). Limitations of a Web or roll fed press are stock choices and paper thickness. Gamut; a web press printing on a number three stock has a smaller gamut compared to GRACoL on a number one stock.
Sheetfed
GRACoL is defined as General Requirements for Applications in Commercial Offset Lithography or printing on a number 1 sheet on a sheetfed press. GRACoL is gaining in popularity and has proven to be an excellent specification for colour reproduction in the sheetfed arena.
Remember our discussion on ink thickness; the GRACoL spec for TOC is 340% verses 300% for Web. This is a notable difference because a large majority of images are converted using the US Web Coated (SWOP) v2 profile and it has a TOC that is too low for a sheetfed press. The result is the photograph prints lighter than expected in the shadow regions because the sheetfed press is starved for ink.
So what can you do to ensure your images are given their full potential? Here are a few rules. If you are unsure use the default US Web Coated (SWOP) v2 profile. It is better to have too little ink than too much. But if you can determine that your job is going to be printed on a quality stock with a sheetfed press then use the GRACoL2006_Coated1v2.icc. Always use Photoshop’s convert to profile option and select the options seen in the screen capture below.
Myth-conceptions….
I used the default CMYK settings in Photoshop and get good results.
I call this a blind conversion because you have no idea what flavour or recipe of CMYK you are using. Don’t do it!!! Use the Convert to Profile option and select your flavour of CMYK.
Converting from CMYK to CMYK in the convert to profile is destructive? No.
This is not a damaging conversion if done once. Sure if you do it 15 times it will degrade the image but not once. But the benefit is that you can repurpose a CMYK to another printing conditions using this method.
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Traditional Separation Tables are more accurate than ICC profiles for making Colour separations/conversions? Big fallacy here, traditional separation tables are significantly less accurate then today’s ICC profiles supplied in Photoshop.
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Youtube client. I can’t specify dot gain when using an ICC profile so I prefer to use Separation Tables where I can dial in the parameters. The dot gain values are built into the ICC profile as well as the white of the paper and the Total Ink Limit.
Understanding the differences will help you make a more informed decision when converting your images for print and always ask your CSR or print broker how the job is being printed and convert your images accordingly.
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