Weird colour profile problem

I have a monitor (Dell 3008 WFP 2560x1600) colour profile created by my Spyder 3 Elite hardware unit and software.
For some reason photoshop is getting it wrong.
If I print screen an empty photoshop window and then paste that into photoshop, it gets a bit yellower. Repeat a few times, and it gets really yellow, as in the attached jpg.
What's going on? Why is photoshop making stuff yellow?
Thanks

Nothing unexpected is happening here.
Calibrating and profiling does NOT make your color-managed and non-color-managed applications match, nor make your screen grabs containing mixed output from color-managed and non-color-managed apps more accurate, in itself. In fact, it does just the opposite. Try to understand that, after profiling, your color-managed applications are putting out ACCURATE color while the non-color-managed applications are putting out INACCURATE color.
If your profiling process has delivered a profile that makes the color values more yellowish (e.g., reduces blue values) to compensate for your monitor's tendency to make them more bluish than they should be, then you would expect to see exactly what you're seeing. Each new screen grab and paste, unless you go through the process I list below, amplifies the differences in the pixels that have gone through the process more than once.
Unless your system is set up to use sRGB as the monitor profile, if you want the image within a screen grab from a color-managed app (like Photoshop) to exactly match the content of your color-managed document, you MUST go through this:
1. Grab the screen.
2. File - New and paste the capture into Photoshop.
3. Edit - Assign Profile, and choose your MONITOR profile, provided by the calibrator.
4. Edit - Convert to Profile, and choose sRGB (for example).
5. Publish the image.
In step 3 you're telling Photoshop that the image was captured from YOUR MONITOR, and that the monitor's profile describes what's in it. Then you're converting the color values in that image in step 4 to a document profile everyone understands.
-Noel
P.S., From time to time I try to advise people on how to make their color-managed and non-color-managed output match more closely, though doing so always seems to invite a bunch of heckling from small-minded people who think that even wanting to accomplish that is somehow bad. If you'd like to try to do that, adjust your on-monitor controls to make the display look more yellowish (e.g., lower the blue a bit) and then re-calibrate/profile your display. You should find that the profile that's generated by the recalibration will then cause less color shift than what you're now seeing.

Similar Messages

Full screen colour profile problem

I just posted this as feedback to Apple and was curious to see if anyone was having the same problem:
I have a dual monitor setup: One Eizo CG222W and one Eizo CG210. The 222W is my primary display (menu bar on this one). Both monitors are calibrated and profiled with a Spyder3 and ColorEyes Display Pro. I have the profiles loaded on both displays. It is worth noting that both (particularly the 222W) are wide gamut, so you may well not see this happening if you are looking at an Apple Cinema display (no offence, but you're just not going to see this so pronounced on an Apple display). To put it into perspective, I have just bought the CG222W and was not noticing any issues with the CG210 because its gamut is narrower (but still wider than a cinema display).
So, if I view an image within Aperture (not full screen), then it looks normal, but when I hit full screen and look at the same image (on the same display), it is noticeably over-saturated. As a check I also opened the same image in Photoshop (on the same display) and it looks exactly the same as when viewed in the normal (non full screen) view of Aperture.
It is clear that there is a colour profile problem with Aperture. It appears that when full screen mode is selected, a different profile is loaded for the display, or a different working space (if Aperture provides such functionality). I won't be doing any image adjustments in full screen mode until this has been corrected.

There is well documented issue with this problem. The fix is to set your default monitor to whichever monitor you are using to view Aperture in full screen, using color sync utility.
The reason you don't have this problem in PS is because it has its own color management within the software.
Hope this helps,
Cheers

Colour profiles problem - images saving too dull. Please help.

I realise you have probably had this question a million times before and I have looked at enough related threads, but I am still at a loss as to what to do. Please note I'm not the most computer-savvy.
For the record I am using Photoshop 7 (yes it's old, but it suits my needs just fine!) and Windows Vista Home Premium.
What I do is take photographs of my artworks, edit them in Photoshop until they look accurate, then post them online. Images have always looked identical in every program, and I had never had any problems, until I got connected to the Internet on Tuesday. This computer has not been connected to the net for a good few years, and so lots of updates got installed. I'm not sure which ones exactly, as my boyfriend took care of that, but I'm convinced this has caused the problems I am having now:
First I found that an image I had edited and saved as .jpg for web use was showing up overly saturated and contrasty in the Windows Photo Gallery preview. I assumed I had saved it wrongly. I re-opened the jpg in Photoshop to check - it looked exactly as I had saved it. I figured something had messed up with Photo Gallery during updates, so I uploaded the jpg to the Internet. The image that uploaded was the overly-saturated, contrasty one.
After realising that suddenly ALL the images I had uploaded online, and all the images saved on my computer, now had this awful over-saturated look, and yet the thumbnails on my desktop looked fine... I realised it must be something to do with the colour profiles, and tried to find out the answer online. My monitor colour profile was set to "21.5 inch monitor" so I changed that to sRGB as default. I can't remember what Photoshop was set to, but at any rate I set it to sRGB also.
I thought I had it fixed, as it seemed to just be Photo Gallery that was not matching up (it was displaying my images with less saturation than as I saved them).
However today I took a new photo of a drawing I'm working on, to load onto my blog. I had to take it into Photoshop to make edits and correct, as always. I opened my photo in Photoshop... lo and behold, far too contrasty and saturated!!
This time, Windows Photo Gallery preview is showing the (unedited, straight out of camera) photo as it should be... Photoshop opens it too contrasty.
I made my edits anyway, saved for web as .jpg, checked the jpg in Photo Gallery before uploading... It saved duller than it should have done!
Uploaded the jpg to the internet... and I have the dull image uploaded.
So first they were too contrasty, now they're too dull. I have tried to follow advice given on similar topics, to no apparent avail.
Being an artist who displays work online and has a certain reliance on the internet... my images have to be accurate and consistent all the way through. Is there anything I can do to set things back to the way they were before?
I appreciate any help.

eartho - All my images are already converted to the sRGB colourspace by default, as far as I can tell. My images out of camera, the ones I have edited and saved as jpg - I even checked some old images. Through Mode/Convert to Profile, they're all already set to sRGB.
emil emil - Thank you. I will do that in the morning - right now my head hurts and I need my bed.

Colour profile problem?

I'm using Indesign CS2 to create large numbers of web banners but have just noticed some odd colour behaviour after creating my templates. I prefer Indesign to Photoshop and Illustrator for this because it allows better control of text. Colour profiles for all applications is sRGB.
In InDesign CS2 I have a box filled with r255 g0 b0:
1. Export as a jpeg and open with photoshop the red changes to r248 g0 b0.
2. Copy and paste the entire page into Photoshop gives r255 g0 b0.
3. Put an image with transparency over the red box and export as a jpeg gives r208 g5 b24.
I have gotten aroung this problem by not using transpapency in images - but why would transparency affect the colour of other elements on the page?
Many thanks in advance...

I try to export a page or spread as a jpeg and the color profile is stripped. I've made sure transparency bleed space is RGB but I still get no profile in the resulting jpg.
Any thoughts?

Colour profile problem in Mountain Lion

Hi all
Setting up a brand new MacBook Pro (10.8.4) for my boss and I have installed CS5 Standard suite on there. He’s a standard user, not an admin. I have installed three ICC profiles in his user’s profile folder (HD>Users>[User]>Library>ColorSync>Profiles) but they are not showing up in the list of profiles that Photoshop or Indesign recognise, even after restarting the programs. I copied them to HD>Library>ColorSync>Profiles and HD>Library>Application Support>Adobe>Color>Profiles>Recommended also but with the same result. I made sure he had Read & Write access to the profiles and to the folders – still no luck. After that I repaired the permissions, again no success.
Copies of the same profile files are being used on various macs and PCs without any problems. Quark 9 can see them. When logged in as an admin PS/ID can see the profiles.
I’m confused - any help appreciated!
Iain

Wow - that's done it. Thanks - I had forgotten about that utility. It found something wrong with each of the profiles - didn't make a note but it all sounded like minor stuff ("padding", "header") so I repaired them and they showed immediately in PS/ID. Guess Mountain Lion is more picky about profiles than Snow Leopard (what our other Macs run).
thanks again,
Iain

Weird color profile problem after SMC update

Although I've managed to resolve this particular problem, I wonder if anyone has suffered the same thing.
Software update says that I should do the firmware update, so I did that yesterday night. Also, at the same time, I went and removed MS Office 2004 Test Drive (it was taking up space for no good reason). Sometime after doing those things, it seems like OSX had lost the display color profile. The only ones I've got was the Adobe one, Generic RGB and sRGB. The generic RGB washes the screen with a blue tone, and clicking on Calibration would merely have the ColorSync utility complain about the profile isn't there.
Looking at the knowledge base, it says that after the 10.4.8 upgrade, the screen may look bluer than before. The curious thing was that my Macbook reported it running on 10.4.8 when I first got it. But anyways I downloaded 10.4.7's LCD profile, and put it at the location specified in that knowledge base. Display preference still didn't pick up on the profile, so I end up restarting the machine, and now it seems to be using a profile called "Color LCD".
I'm wondering if anyone else have experienced something like this, and going to document this here as a possible solution if someone is lost after a random deletion of a color profile....
Macbook 13" Mac OS X (10.4.8)

I had something similar happen when I upgraded to 10.4.8. In fixing the blue tint problem, I loaded a backup copy of the Color LCD profile. Subsequently, under exact circumstances I don't remember, the machine "lost" the profile. And the calibration option would just give an error.
So somehow, after further fiddling, I ended up with two copies of Color LCD profile, one the old 10.4.7 one, one the 10.4.8 one. I haven't had the problem of it losing the profile again.
But I might mention that there is a related problem which you may encounter. If I use fast user switching with another account and return to my (admin) account, the blue tint returns. The workaround is as described in this article:
http://www.macworld.com/weblogs/macosxhints/2006/02/fuscolor/index.php
I have created an alias to the DMProxy application as described in the above article, and have to run it after every time I use fast user switching.

Colour Profiles on exported images causing major problems

I've been exporting keynote slides as png's to use in video presentations. The problem is that the png's are saved with colour profiles, which means if I export the images from diferent macs, or even the same mac but with a different monitor attached (therefore a diferent monitor colour profile active), the images have very noticeable colour variations.
This is a major problem. I exported 1,000 slide transitions to import into Adobe Premiere, then about 500 slide updates that when imported, were in some cases darker or lighter even though I was using the same keynote and original images. I had to create a batch job in Photoshop to open, ignore the stored profile and save the images using a new default colour profile to try and get all the images consistent.
There needs to be an option in either the Keynote preferences or export options to save exported images without colour profiles.

There needs to be an option in either the Keynote preferences or export options to save exported images without colour profiles.
No, there needs to be documentation on the ICC architecture and how ICC profiles are applied. Stripping out embedded ICC profiles will colour manage the objects (images) in the system, but when the images pass outside the system they will not be colour managed any more. In this scenario, either they will have to be rendered as deviceColor by the numbers, without a definition of the colours their colourants should form, or a source ICC profile will have to be assigned by the following system/application.
I've been exporting keynote slides as png's to use in video presentations. The problem is that the png's are saved with colour profiles, which means if I export the images from diferent macs, or even the same mac but with a different monitor attached (therefore a diferent monitor colour profile active), the images have very noticeable colour variations.
I could be considered an unconditional bug in Keynote if it embedded the current monitor profile and not the system RGB colour working space profile (: Generic RGB Profile). If indeed Keynote embeds the current monitor profile, it could be considered an unconditional bug in your understanding if you start by stripping the source profiles. You should be doing a profile to profile conversion in order to get into the RGB colour working space you want in Photoshop.
Sorry, but it helps to have a basic understanding of media independent colour matching (even if the developers don't sometimes -:)).
/hh

Problems with colour profiles

Hi,
Since I reinstalled Win7 and Photoshop, every time I open a document it is in the "working RGB" colour profile, which makes the document whitish. So I have to assign another profile, namely the one associated with my monitor.
But I have to do this every time I open a document, even if it's the same document !
Is there a way to tell Photoshop that I want him to open all documents with my monitor's profile ?

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zibizibi wrote:
I would love to recalibrate my monitor but what does that mean exactly ?
Generally this involves the purchase of a separate mesurement device to measure the colors of your monitor, and attendant software to create a profile and put it in the right place for your color-managed applications to use.
There are upsides and downsides to doing this (for example, a calibrated/profiled system will almost always show the same image differently in different applications, depending on which is color-managed). You should try to read up on Color Management and really understand what it's all about - and weigh that against your goals.
Notably Windows ships with sRGB as the default monitor profile, probably because this is a minimum common denominator setup and it does provide somewhat more consistency. It may not be as valid as it used to be, as modern monitor capabilities exceed the sRGB space by ever more, however.
-Noel

Do I need to set AI colour profiles for use in ID?

My previous set up:
Mac
CS2 (Illustrator, Photoshop, Bridge)
Quark XPress 7
My new set up:
PC (Win 7)
CS5 (Illustrator, Photoshop, Bridge, InDesign)
My problem:
I work for a company that prints newspapers, but my dept also does work for glossy sheetfed printers (magazines leaflets etc)
All my work is exclusively CMYK.
With my previous set up - I didn’t want to have to switch my colour profiles via Bridge as I was constantly juggling two types of jobs:
Our tabloid press - Profile - ISOnewspaper26v4 (CMYK)
Sheetfed Printers - Profile - ISO Coated V2 (Fogra 39) (CMYK)
So I set my CS2 Suite colour settings to ISO Coated V2 (Fogra 39) and set an action in Photoshop to convert jpegs / eps photos to ISOnewspaper26v4.
So my CS2 working space was set for Sheetfed glossy publications and if I wanted to set a picture to the correct profile for newsprint I just had to open the picture and hit the action that applied the ISOnewspaper26v4 profile.
Regarding Quark – I set up separate templates for each type of job:
One for Profile - ISO Coated V2 (Fogra 39) and one for - Profile - ISOnewspaper26v4.
Regarding Illustrator - I found that Quark 7 didn’t differentiate between Illustrator colour profiles, or if it did, it didn’t show up in ‘Usage’.
If I went to Quark Usage and went to ‘Profiles’ it only listed the Quark profile and any Photoshop profiles, not any Illustrator profiles.
So in Illustrator I just set colour profiles to ‘do not colour manage this document’. So that I only had to worry about changing profiles for Photoshop jpegs / eps’s.
So I had a good little system going that served me well and now my company decided to move us to PC’s and CS5; and I still have the same problem – juggling newsprint jobs and glossy magazine jobs and not wanting to have to synchronise my CS suite colour settings every time I switch between jobs...
So I was hoping to stick with my little system on PC / CS5.
So basically my question is, do I need to worry about Illustrator colour profiles if I am bringing Illustrator files into InDesign? (To clarify, my Illustrator files are always pure vector, so there is no chance of some rogue RGB jpeg sneaking through on a Illustrator file)
Im open to suggestions regarding my set up, but really would prefer not to have to keep switching my colour profiles.
Any help would be greatly appreciated.

First, I wasn't suggesting that your PDFs be exported to RGB, but it is a common workflow these days to keep photos in RGB until you convert them to the correct profile during the export process. This maximizes the potential for re-purposing your documents and allows you to use the same RGB photos for different output purposes without having to do separate CMYK conversions for each destination, so long as you don't need to do any tweaking after the conversion.
And to answer your question, if the .ai files have no embedded color profile they will ALWAYS be considered to use whatever the CMYK working space is in your ID file, so the numbers will be preserved. This means that there will be slight differences in color on output on different devices (the whole point of color management, after all, is to preserve the appearance of colors by altering the numbers for the output device).
Does the vector work you get from Thinstock come with an embedded profile? Is there any color that is critical for matching, such as a corporate color (which should be spot, but that's a different discussion), or do you use the same art in both the newspaper and magazine, and does the client expect a match (which we know isn't going to happen anyway)?
If there's no embedded profile when you start, there's no way to know what the color was supposed to look like, so color management is not possible, really. You can assign a profile, but you'd be guessing. Since the correct appearance at that point is unknown continuing with out color management shouldn't present a problem. The only case where you would need to manage the vector art would be if the color APPEARANCE is critical or you need it to match across different outputs, and in that case you would need to assign a profile and allow ID to preserve the profile on import and remap the numbers, which means you would likely get rich blacks someplace. Since it's unlikely that you can get a good match going from glossy to newsprint, I probably wouldn't even try -- you wouldn't want, for example, to tag the art as newsprint, and have it print subdued on the gloss if it would look better or more correct with the other profile. Color management would be much more useful if you were going from sheetfed to web on the same stock.

Can you use a photo lab's colour profile in Elements?

Using PSE 6, I want to use a printer profile from a digital photo processing lab, so as to get accurately printed images. (Additonally my monitor is calibrated by a Heuy Pro)
The profile is 'FUJI 570 Supreme Lustre' which I have downloaded from the lab and installed on my Windows Vista PC. Following PSE Help instructions, if I go to the print option then from the drop down Printer Profile list, I can see, choose and select the Fuji 570 profile.
The problem is that this process only seems aimed at then allowing me to click on cancel or print (there is no save option etc). PSE seems to assume that I am connected to the Fuji printer and want to print the image myself, which, of course, I don't but rather want to save this image with the correct profile for the lab's printer and paper-type, so as to send the file(s) for my colour managed image(s) to be printed.
Is there any way that you can save a PSE image file with a colour profile like this in it?
If yes, how is this done?
The lab provides instructions as to how to do this with Photoshop but they are unfamiliar with PSE. In the lab's instructions it refers to View/Proof Set up/custom and unchecking Preserve Colour Numbers, Paper White and Ink Black. Is any of this possible/necessary with PSE 6 (or any later version?)
I have tried to resolve this myself but come to a dead end. If anyone can advise me how to achieve what I want to do, that would be really great or if it can't be done using PSE, to know that would be a great help.
(I have used this lab before without the profiles and whilst the results were good in several respects, some colours, not surprisingly, were not very accuate with my calibrated monitor)
Thanks for reading and considering my posting on the forum.

Thanks for this further advice- much appreciated.
I don't think the Edit>>Colour Settings is going to work as this means that the monitor set up becomes the profile. In my case the Huey profile (which is confirmed as it shows in the print set up preference/settings boxes). Although the Huey profile is important for accurate editing, it will not fulfil the lab'sFuji printer/papers settings.
It looks like PSE does not have any way to save to file with the printer profile (unlike Photoshop). This is a real shame.
It's an interesting issue, as I can't believe that I am the only user ever wanting to use a lab's profile to get better colour management and to use a photographic lab rather than an attached printer.
Anyway, thanks again for engaging in this issue and for your thoughts and advice - much appreciated.
Should I find a way to resolve this, I will post it on the forum.

How do I Fix Messed up Colour Profiles

I've somehow managed to completely mess up my colour profiles in Photoshop CS5. What a total Gormlops I am. Can anyone help me with these 2 related problems?
1 - ACR displays colours from RAW files as lifeless and dull compared to JPEG. I've searched countless forums and I'm lead to understand that RAW files don't include the 'in-camera' processing that we see on the JPEGS. What I don't understand is that ACR used to display the colours on my RAW files exactly like it did with JPEG files so although I understand the difference in the way ACR handles RAW vs JPEG why has this only become noticable in the last few months? I've had this installation of CS5 for almost 2 years and the problem crept in only recently. How do I fix this?
2 - Proof Colours Confusion
I mostly work on the web and rarely need to print. Round about the same time the above problem reared it's ugly head I also started having issues with how many graphics colours looked in CS5. I realized that half of the time I was working with 'Proof Colours' switched off which made my colours really intense (something to do with gamma).
I checked my 'Proof Setup' and switched it to Internet sRGB seeing as I mostly work with web graphics and photos. I then hit Ctrl+Y to switch on Proof Colours and now I see the colours as they really are.
My question for this is twofold - Am I correct to be working in sRGB and is there ar way to have 'Proof Colours' always switched on so that I only EVER see the 'actual' colours that others will see when I publish my files to the web?
I can't help thinking that these two issues arose at the same time and are linked. I tried installing a demo of CS6 in the hopes it would set me back to where I used to be but alas nothing changed.
Thanks in advance.

Try posting in the Adobe Camera Raw forum:
http://forums.adobe.com/community/cameraraw?view=discussions
You might want to do a forum search there before posting, though. This comes up repeatedly and has been discussed ad nauseam there.
In a nutshell ACR is not designed to emulate the in-camera JPEGs at all.

Mac pro keeps crashing/weird colours/unable to reset/wont boot

Hello. First some info. I have had my mac pro for 18 months. I am running OP system X 10.5.8. I have four 256mb ramss instaled(from purchase) and 250G hardrive.
Now for 17 months, everything has run fine. Until one day after switching accounts, I noticed weird red lines accross the screen and I could not click on anything. I had to use the power button to reboot and then everything went fine until the next morning, after logging in, I got the red/pink lines accross the screen again and I was unable to click on anything.
This problem went on for about a week but then things got worst. I was having to use the power button upto 4 times because when i tried to boot, it was stuck on a blue screen. This then became 6 times after a short while more.
Before long, i was at the stage where i would click on my account to log in and the screen would just freaze. After several reboots, i was able to get onto the account but the computer then began crashing(with the spinning colour wheel in the middle of the screen) and i could click on nothing.
I was thinking that my computer needed warming up or something but today, it has gone one step too far. Ive spent about an hour trying to get it on but everytime i click itunes/safari etc, i just get a frozen screen, often with weird colours. My computer is making horrible noises(like its downloading a song, if you get me) that do not go away.
Now, ive done a hardware test and an extended hardware test but nothing came up. I attempted to re-install the operating system but that ended up crashing just like my computer does.
For some reason however, i have booted in safe mode and there is not a single problem with anything. I can click on itunes etc etc and nothing crashes.
I have apple care, what do you think i should do now? Could it still be a hardware problem? How do i find out if it is a software error?
Any help would be fantastic

milesmartin, did you ever resolve this issue?
I find myself in almost the same situation. I have a Mac Pro using OS 10.6.1 with 9gb RAM and three hard drives. This happened suddenly at a cold startup for me. The strange red/pink lines, mouse not responding, etc. I could do a hard restart (power off) and the problem seemed to go away. I have tried many tests with TechTool Pro and the Apple hardware disk. All test show no problems with hardware. I have installed clean systems on a new hard drive several times including going back to OS 10.5. Each cold restart brings the same freeze, strange graphic displays. I reset the SMU, purged the PRAM, replace the battery, pulled/replaced all RAM modules, tried starting from the OS install disk. So far, nothing helps.
At the start of this problem, I could do a boot in safe mode. Now, nothing works and it may take 4 or 5 restarts to get the system up and running. This is most unacceptable and probably stresses the components in ways that will eventually cause a failure.
I am out of ideas today and it is no longer fun. Any help?

Need some help with the colour profile please. Urgent! Thanks

Dear all, I need help with the colour profile of my photoshop CS6.
I've taken a photo with my Canon DSLR. When I opened the raw with ACDSee, the colour looks perfectly ok.
So I go ahead and open in photoshop. I did nothing to the photo. It still looks ok
Then I'm prompt the Embedded Profile Mismatch error. I go ahead and choose Discard the embedded profile option
And the colour started to get messed up.
And the output is a total diasater
Put the above photo side by side with the raw, the red has became crimson!!
So I tried the other option, Use the embedded profile
The whole picture turns yellowish in Photoshop's interface
And the output is just the same as the third option.
Could someone please guide me how to fix this? Thank you.

I'm prompt the Embedded Profile Mismatch error. I go ahead and choose Discard the embedded profile option
always use the embedded profile when opening tagged images in Photoshop - at that point Photoshop will convert the source colors over to your monitor space correctly
if your colors are wrong at that point either your monitor profile is off, or your source colors are not what you think they are - if other apps are displaying correctly you most likely have either a defective monitor profile or source profile issues
windows calibrate link:
http://windows.microsoft.com/en-US/windows7/Calibrate-your-display
for Photoshop to work properly, i recall you want to have "use my settings for this device" checked in Color Management> Device tab
you may want to download the PDI reference image to check your monitor and print workflows
and complete five easy steps to profile enlightenment in Photoshop
with your settings, monitor profile and source profiles sorted out it should be pretty easy to pinpoint the problem...

Colour colour profiles and JPEG compression mismatch

In preparing images for iBooks I have noticed bizarre behaviours and a number of problems with matching colours.
For example, if a JPEG image all one colour is placed in a gallery widget over a text box, and then the background colour of the textbox is set to the colour of the image by sampling the colour in the image using the colour picker, when downloaded to the iPad the colours will not match (although they appear to in iBooks Author). I presume this must be a bug with the encoding of the JPEG? Or is it a conversion issue between different colour profiles used for the solid colours in iBooks and the sRGB colours that Apple advises using for images?
I have also noticed that if you download a book to an iPad the colour matching between solids and image colours changes radically depending on what monitor you have the computer running iBooks Author plugged into (ie depending on the monitor profile in use). What colour profile does iBooks author use for solids and what for images and why are they different? Is it conversing the solids but not the images, or vice versa, and between which colour spaces? What is the working colour space of iBooks Author? Does it differ depending on the monitor profile? If so, why does converting images to the monitor profile still not result in them matching the solids used in iBooks Author?
In short, does anyone have a clue what is going on with the colour profiles and colour matching in iBooks Author and iBooks on the iPad? They certainly display the most perplexing behaviour I have ever come across.
Giles Hudson

Although you say there is no concept of a colour profile in iOS, the problem is that iBooks Author does recognize profiles, and appears to take them into consideration when downloading images to books on the iPad. For example, an image tagged with an sRGB profile placed in iBooks Author will appear differently from an identical image tagged with an Adobe RGB profile. The problem is, it is not at all clear what conversion is going on, especially when using a monitor with a different colour profile appears to cause radically different behaviour in the conversion. Is it being converted to "Device RGB" that the colour picker apepars to use? What is this Device RGB? The monitor RGB or the iPad RGB?
I understand that iOS supports RGB and CMYK. However, the important question is, which working space does iBooks Author use? sRGB, GenericRGB, Device RGB (whatever that is), Apple RGB, Adobe RGB, the monitor RGB? Without knowing this it is difficult to match solid colours to colours in images (and even arguably impossible due to the JPEG encoding problem I mentioned above).
All this vagueness in colour handling with OSX and iOS makes life very difficult, especially, as you suggest, when things have the potential to change at any minute, potentially wrecking months of painstaking work that has been put into designing books in iBooks Author.

Aperture and dual monitor ICC profile problem

I am using an Epson Stylus Pro 3800 and run Aperture 2.1 from a MBP with a Cinema Display 23". I calibrated both displays (the 23" and the MBP display) with my ancient but working ColorVision Spyder, using OptiCal 3.7. I calibrated for a gamma of 2.2. and native white point. I check the results with various test images.
Here is the problem: the calibration produces a perfectly calibrated display, but when I open Aperture some color change is taking place, as if Aperture pulls in a wrong profile for the display (which then also leads to wrong colors in the prints): sometimes the photo which I have printed out before in perfect quality displays with either a nasty yellow cast or with totally oversaturated colors. I have used ColorSync utility to make the 23" the default display and I have also tried to simply close the MBP to work only with the 23", and sometimes either of these this did the trick. Most of the times, however, I get these color casts or oversaturation of the photos which I had worked on for a while and printed earlier with perfection.
I ran Disk Utility to Repair Disk Permissions (many Epson-related permissions were wrong, for example "Library/Printers/EPSON/InkjetPrinter/Libraries/UtilityCore.framework/Versions/ A/Resources/Icon8007.png", should be -rw-rw-r-- , they are -rwxrwxr-x ) and reinstalled the latest Epson driver for 10.5 repeatedly.
Even more surprising, at times the color of the full screen image can be off at the same time the thumbnail looks perfect! How is this possible? It seems as if thumbnail and full image use different display profiles. In addition, if I export the Master and display it in Lightroom or CS2 it looks perfectly fine and prints as expected. (I use the appropriate "canned" ICC profiles for the printer-paper combination).
The most surprising happens, however, when I drag the image from the 23" to the MBP: when the image is about half-way between the two displays (that is, one part is displayed on the 23", the other on the MBP scree) it suddenly changes from off-color or oversaturated to the correct color on the 23". If I then move the image up to the 23" again, the wrong display colors appear again.
I am at a loss: I have spent a lot of money on the gorgeous screen, the great printer, and Aperture (which is a great program), but I cannot get Aperture to print reliably, or rather, I cannot get Aperture to use the right display profile to display the image correctly in a reliable way.
I have read kbeat's color management blog and many entries on this blog here, but I have not found a solution. I appreciate your help.

Kai,Simon,
This is the problem i have been having.Colour profiling is correct,prints are rubbish.I run a fuji frontier
as well as epson printers.Anything from aperture is not what you see on screen.I am running aperture2.1.
Today we are removing 2.1 and doing a reinstall of 1.1 but not upgrading to 2 to test run prints.I have been looking for answers to this for sometime.
Simon,the problems we are have are very similar to you clients,photoshop fine,aperture not.I also have 20"external apple monitor attached which is used as the colour correcting monitor ( as the imac screen is not that good for criticl work ) I will post my findings here.
Simon, if you wish to investigate further,e-mail me,i am in leeds
daisy ( not a happy printer )

Weird colour profile problem

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