HP T790 color plot issues

Very often while making color plots with our HP T790 plotter, the color will change on one single plot. For instance, last week I was plotting some high quality aerial photos. Starting out the plot was perfect and the color was great. Then about half way through the plot, some of the colors changed. On the aerial, the soil started out being exactly how it should have been, a nice brown. Then it changed to pink.
I have also noticed the same thing on some AutoCAD plots. A plant symbol started out green as it should be then turned to a bluish teal color.
Does anyone have any idea? It almost seems like the plotter got tired during the plot as the color started out great then changed to something wrong.
Thanks!

This forum is focused on consumer level products. For the Designjet you may have better results posting in the HP DesignJet forum here, that is where the DesignJet experts can be found.
It sounds to me that there is an issue with your yellow print. There may be air in the ink supply lines or low on yellow ink. Someone in the Desigjnet forum should be able to provide some specific troubleshooting steps.
Bob Headrick, HP Expert
I am not an employee of HP, I am a volunteer posting here on my own time.
If your problem is solved please click the "Accept as Solution" button ------------V
If my answer was helpful please click the "Thumbs Up" to say "Thank You"--V

Similar Messages

RPM / Frequency Color Plot best strategy

Hello,
I'm trying to do some Order Spectra Analysis and I'm receiving an Out of Memory error once I'm trying to plot an RPM-Frequency colormap. I'm not sure I'm doing the right thing that is why I need some help from you. The data I'm trying to analyze it is offline data sampled at 51.2kS - a few minutes. I'm reading from the TDMS file chunks of 10 seconds (max 512kS) and for each chunk I'm using the OAT Analog Tacho processing for speed calculation and OAT Spectral MAP (Waterfall) to process the data. I'm using the Waterfall and not the Colormap because I'm buffering the spectrum using SVX Buffer Waterfall Graph (Waterfall Data).vi. Once I'm process all the chunks I'm converting all Waterfall Data to Colormap data using SXV Convert Waterfall to Colormap.vi. When I'm using the OAT spectral map, I select the window length depending of the X scale of the color plot, Width of the Colormap and Sampling Rate to make sure I will not have more that 1 frequency line / pixel. Unfortunately I can not do the same thing on the Y axis because I don't know the RPM limits of the signal so I can not adjust speed segment step to an RPM that is efficient for the resolution of the graph and maybe that cause the Out of Memory error when I'm trying to do RPM / Frequency analysis. What is strange is that sometimes the output of the spectra analysis is very strange, the value of the dz (RPM step) is negative. For example if I set 125 RPM then the dz it comes -125. What could cause this issue and how can I improve my code ?
Thanks in advance,
Alex

Hi Alex,
There are some general ideas for improving the efficiency of your code listed in the article How Can I Optimize the Memory Use in My LabVIEW VI?. A full description is laid out in VI Memory Usage.
After trying those steps, if you still need more memory, try increasing the amount of memory that LabVIEW can access in your system as described in the article How Much Memory can LabVIEW 32-bit or 64-bit Use? or you could consider creating virtual memory as described in How Can Virtual Memory Help with Memory Issues in LabVIEW?
Another option is to isolate the source of the issue. You can use the VI Profiler to diagnose your VIs (if you have subVIs) and see which one is consuming too much memory. This is described in the article How Do I Use the VI Profile Window?
- Regards,
Beutlich

A different take on the "Save For Web" color shift issue...

Ok, everyone who has fussed much with photoshop and "Save For Web" knows about the color shift issue. If you want your colors to look right after you "save for web", you have to work in the sRGB colorspace, and have Proof Colors checked (soft proofing on) and the proof color setup set to Monitor RGB, otherwise what you get looks terrible when displayed in a browser.
But of course if you are editing for print, this is exactly what you DON'T want to do. Well, I work in both. In fact, often the same images, and I want them to appear as close as reasonably possible in both print and web formats, and without a lot of fussing on my part. And I'm pickiest about the print mode, since I have the most control there, so that's the way I want to edit by default.
Nothing new here.
Now comes the interesting part (in my mind, anyway). Obviously there is a known remapping -- because PhotoShop DOES it when you select Proof Colors. So the inverse mapping must also be known (with some gamut issues, but I'm not concerned with those, because, after all, I'm VIEWING it on a monitor anyway!). What I want is a plug-in that automatically applies that inverse mapping so that, when I do a Save For Web, I end up with the colors I've been viewing all the time when setting the shot up in print mode. Then, too, I don't have to worry about what mode I'm in when I'm editing -- it just fixes it when doing a save-for-web.
Again, I want to edit in my normal print mode (typically ProPhoto colorspace, and with soft-proofing off or set to the printer/medium combination I expect to use), then do a single operation (might be a multi-step action) to "screw up" my colors so that when I then do a "Save-For-Web", the resulting image, when viewed on the average color-stupid browser, looks like the image I've been seeing in Photoshop.
Anyone know of such a beast?   I would gladly pay for a plug-in that really works and fixes the problem.
And if you have other solutions, I'm interested, but the absolute requirement is that it I do one single edit pass for my colors for both print and web use, and I get what I see on the screen in PS on both the prints and on the web display (i.e., working in sRGB/Monitor RGB mode all the time won't cut it). And PREFERABLY, let me do all my editing work in the ProPhoto (or at least AdobeRGB) colorspace so I have a gamut closer to what the printer can do.
Anyone got a decent solution for this?

Sorry, I think I'm being unclear. This has nothing to do with individual monitor profiles. In Proof Setup, "Monitor RGB" amounts to turning off ALL color management, and simply letting the monitor do what it will. It is what the vast majority of web browsers do (even if the operating system provides color management, the browsers don't take advantage of it), so that is what you need to consider for images that will be viewed on a web browser. If you convert your image to sRGB, select Monitor RGB in Proof Set up, and turn on Proof Colors, you will see the image as it would appear on a web browser (after you save it as a jpg or use "Save For Web/Devices" to save it as a jpg).   Since almost everyone is running different uncalibrated monitors, there will be lots of variation in how it will look to them, so precise control of the color is unimportant.
That said, I would expect the color on a calibrated monitor (such as the one I use when editing) to be reasonably close to the colors I am seeing while editing in PS. To the extent a monitor deviates from "calibrated", those colors will vary, but a good monitor should show good colors.   Unfortunately, this is NOT the case, as my previous post shows. The colors produced by the steps above are oversaturated and significantly shifted in hue. There is, to my mind, anyway, no reason for this. Adobe clearly knows what the mapping is between the colors as it displays them in PS and the un-controlled "Monitor RGB" -- that is, it is the color map they are using during normal editing display. If they were to reverse-apply that map prior to saving it as a jpg, then the image would appear on a browser on that same (presumably calibrated) monitor very similar to what you set up when editing. Anyone else viewing the image on a web browser with a calibrated monitor would also see good colors. To the extent other viewers' monitors are out of calibration, their colors will suck, but there's nothing you can do about that.
I guess in some sense I AM "asking for a Color-Mamangement-solution for a "non-Color-Management-situation", but specifically I'm asking for PS Color Management to do the best it can for non-Color-Managed situations that we all face every day.
Does that make more sense?

Looking for a better solution to the "Save for web" color shift issue

Ok, everyone who has fussed much with photoshop and "Save For Web" knows about the color shift issue. If you want your colors to look right after you "save for web", you have to work in the sRGB colorspace, and have Proof Colors checked (soft proofing on) and the proof color setup set to Monitor RGB, otherwise what you get looks terrible when displayed in a browser.
But of course if you are editing for print, this is exactly what you DON'T want to do. Well, I work in both. In fact, often the same images, and I want them to appear as close as reasonably possible in both print and web formats, and without a lot of fussing on my part. And I'm pickiest about the print mode, since I have the most control there, so that's the way I want to edit by default.
Nothing new here.
Now comes the interesting part (in my mind, anyway). Obviously there is a known remapping -- because PhotoShop DOES it when you select Proof Colors. So the inverse mapping must also be known (with some gamut issues, but I'm not concerned with those, because, after all, I'm VIEWING it on a monitor anyway!). What I want is a plug-in that automatically applies that inverse mapping so that, when I do a Save For Web, I end up with the colors I've been viewing all the time when setting the shot up in print mode. Then, too, I don't have to worry about what mode I'm in when I'm editing -- it just fixes it when doing a save-for-web.
Again, I want to edit in my normal print mode (typically ProPhoto colorspace, and with soft-proofing off or set to the printer/medium combination I expect to use), then do a single operation (might be a multi-step action) to "screw up" my colors so that when I then do a "Save-For-Web", the resulting image, when viewed on the average color-stupid browser, looks like the image I've been seeing in Photoshop.
Anyone know of such a beast? I would gladly pay for a plug-in that really works and fixes the problem.
And if you have other solutions, I'm interested, but the absolute requirement is that it I do one single edit pass for my colors for both print and web use, and I get what I see on the screen in PS on both the prints and on the web display (i.e., working in sRGB/Monitor RGB mode all the time won't cut it). And PREFERABLY, let me do all my editing work in the ProPhoto (or at least AdobeRGB) colorspace so I have a gamut closer to what the printer can do.
Anyone got a decent solution for this?

Chris
I spent all day Googling and doing side by side comparisons of my old and new systems.
My display is a Dell U2410. It has several presets, including sRGB and Adobe RGB. I've been using sRGB.
On my OLD system, (Win XP, PsCS2, DwCS4) there seems to be no distinction between color managed and non color managed apps, even on this wide gamut display. I could capture (digital camera) in Adobe RGB, open and edit in PsCS2, save as .psd, convert to CMYK for print, or convert to sRGB for SFW. All images looked identical and they printed and displayed perfectly. I thought this was normal, and seemed logical. This also seems to be the source of my incorrect assumptions. I was trying to get my new machine to behave like my old one.
So I get this new machine (Windows 7, PsCS5, DwCS5) and now (still in sRGB display mode) all color managed apps appear de-saturated. Non color managed apps are OK. If I switch the display to Adobe RGB, color managed apps are OK, but non color managed apps are way too saturated. From my investigation, I believe this is normal behavior on a wide gamut display. I've tried changing the Control Panel > Display > Screen Resolution > Advanced settings > Color Management options, but to no avail. Either I'm missing something, or Windows 7 is doing color management differently.
It seems my only option now is to use Adobe RGB display setting for Ps, etc. and switch to sRGB for Dw and non color managed apps. Or, have 2 separate files for print and web. I've Googled 'til my eyes are numb and still not sure I'm getting this. Any enlightenment would be greatly appreciated.
Finally, I don't see an edit function here, so I can't remove my previous incorrect reply. Moderator, please feel free to do so.
Thanks

Color Management issues with Illustrator

Can someone help me figure out the color management issues I'm getting when printing on an Epson 3880 from Illustrator?
The image comes out severely red as evident on the face. I'm not getting the same problem when printing from Photoshop, even though I set same paper profile in printing dialog box.
I attached two printed picture (one from Photoshop CC, and one from Illustrator CC) that I took with my iphone so that you can see the printed result. Even when I try to simulate same thing using illustrator soft proofing process, the soft proof does not show me anything close to how it gets printed out. And I tried all device simulations to see if any would match it. Im using CMYK SWOP v2 for Color space in both programs.

Dougfly,
Only an hour wasted? Lucky you. Color is an incredibly complex subject. First, forget matching anything to the small LCD on the back of your camera. That's there as a basic guide and is affected by the internal jpg algorithm of your camera.
2nd, you're not really takeing a color photo with your digital camera, but three separate B&W images in a mosaic pattern, exposed thru separate red, green and blue filters. Actual color doesn't happen until that matrix is demosaiced in either your raw converter, or the in-camera processor (which relies heavily on camera settings, saturation, contrast, mode, etc.)
Having said the above, you can still get very good, predictable results in your workflow. I have a few color management articles on my website that you might find very helpful. Check out the Introduction to Color Management and Monitor and Printer Profiling. In my opinion, a monitor calibration device is the minimum entry fee if you want decent color.
http://www.dinagraphics.com/color_management.php
Lou

Camera Raw Color Temperature Issue

Help me verify color temperature issue please.
I shoot with Canon EOS 5D.
I sat white balance mode to K - Manual Kelvin temperature - and set value to 6000K.
So my raw files should have this setting - color temperature 6000K.
Canon ZoomBrowser EX shows me the value - 6000K
Nevertheless I see different reading in Adobe Camera RAW converter (as shot)?
Photoshop CS2 Camera Raw CT=5600K Tint=+3 (! as Shot !)
Why?

Ramon seemed to have the answer in hand, then G Sch above chimed in with some random comment about coordinate systems. Weirdly, Ramon then agreed with G Sch's nonsense and thanked him for it. Suddenly the thread has suffered an ineluctable defenestration.
Is:
- camera maker's control for XXXX Kelvin wrong?
- Adobe's control for XXXX Kelvin wrong?
- the use of the designator "K" in these contexts wrong, as it implies physics reference for the measure while the camera and ACR just do their own thing?
By the logic used in this thread, 1/250sec shutter doesn't have anything to do with a time standard, nor does F4 mean an aperture, it's just a coordinate in a locally defined system, la la la. So why bother to even code it in EXIF? What's the point of providing a control in terms of K if K isn't normalized?
The question was answered at Ramon's first post: ACR doesn't read the 5D white bal metadata. The camera K setting is used for in-camera processing and by Canon utilities. But note that the raw data are white bal agnostic but white bal results are subject to a camera profile which may differ between OEM and ACR, and at which point there is room for discrepancy for interpretation of color. Which one is right? I can't say. It's important to realize the results for a given K setting may differ between OEM and ACR because of this. Contrary to what G Sch writes above, the same K setting ought to give the same results if a "Kelvin" setting is to have real meaning, but the seems to be impracticable if the developers don't agree on the characterization of the gear.

Color shift (color management) issues in Mavericks

Noticed color management lacking for Safari and Dock icons just after Maverick update, but was unable to check it with recalibration. Today X-Rite issued an update for i1 Display PRO and i was able to recalibrate my display, but the problem unsurprisingly wasn't in the display profile.
Bellow are two screenshots of Safari vs. Chrome and FF vs. Chrome respectively.
Color difference is seen with the naked eye, but gray and blue fields' values are also annotated (Safari is on the left, Chrome is on the right).
These are FF (on the left) and Chrome (on the right) with no color difference, both browsers are color-managed.

Issues here too: 2013 Mac Pro, latest Mavericks/browser versions (OS X 10.9.4), and Dell UP2414Q display (known for good color—not to mention the only retina display money can buy).
Safari seems fine: web sites with no color profiles in the images look very much as I am used to from OS X Lion and Windows on other machines (some variation from screen to screen is just life). CSS colors match image colors when they should.
Firefox is ultra-saturated: web sites the look fine in Firefox--and identical to Safari--under OS X Lion (on a different Mac/display anyway) but on the new Mavericks system, colors are eye-burningly saturated! That's CSS and images alike (without color profiles). CSS and image colors still match—but both are WAY oversaturated.
Note: images dragged from Safari and Firefox to my desktop both look fine when opened in Quick Look or Preview. Both (again, images without profiles) look super-saturated like Firefox when opened in Photoshop CC—despite Photoshop having the same settings I'm used to using (color management Off for RGB, working space set to Monitor) on my old Mac with PS CS6 under Lion. Yet the color values in PS CC do register as correct despite looking so bad (same goes when opening my own RGB source PSDs that generated the web sites to begin with).
Shouldn't Safari and Firefox out of the box look alike, since they do in earlier OS versions? (Even if some workaround is found, "out of the box" a new Mac with default Firefox installation now looks terrible.)
Separate but complicating issues, in case it helps to diagnose this:
a) The Dell display's default calibration looks quite good to me; but if I run Apple's visual calibration steps which I would normally do on a new Mac, everything gets very dark. (So I went back to the default calibration, which is supplied by Apple and called "Dell UP2414Q"; Apple clearly supports this display specifically, since I never installed any Dell software.)
b) When I take an OS X screenshot of Safari, despite it looking "right" everywhere (Preview and Photoshop CC alike), values are way off. (Regardless of whether I strip the color profile or not when importing the screenshot into Photoshop CC.) When I take a screenshot off Firefox, the screenshot looks "right" (no longer oversaturated!) in Preview and Quicklook. When imported into Photoshop CC, Firefox screenshots behave just like drag-saved images from Firefox: they appear super-saturated just like in the browser, BUT the color values at least register correctly.
c) No setting I can find for Photoshop CC will make exported images look right (and match CSS colors) in ANY browser unless I accept them being super-saturated while I work on them (which of course is untenable). I'll deal with that separately: I've abandoned the new Mac Pro for Photoshop work and gone back to my old Mac (and PS CS6)--but this I assume to be Adobe's fault. I mention it only in case it's some kind of clue.
For what it's worth, here's my interpretation: Firefox and Photoshop are using the full gamut of the display, while Safari is not—and Safari looks GOOD not using the full gamut. (And at least with this Dell display, it looks "correct" that way.) Pure primary red #FF0000 (images and CSS alike) which appears normal to me in Safari and Preview and Quicklook turns to eye-burning neon red in Firefox and Photoshop (with management Off and working space set to Monitor). It's kind of amazing that the display can show a red even more brilliant than I have ever seen on a computer before, BUT it doesn't help me design web sites for the rest of the world who has a more ordinary gamut.
Maybe this is just a long-standing Firefox bug, revealed to me now that I have a large-gamut display? (But that wouldn't explain why other people have seen colors MORE saturated in Safari then Firefox.)

Color rendering issue

i'm using aperture since version 1. and till today i see the same color rendering issues which occurs when applying heavy exposure correction on my canon pro camera files. when i correct overexposed images i get a strange yellow posterisation not a smooth transition like with, capture one, raw developer, adobe lightroom & arc. i decided to do a more controlled test to see whats going on. the result is kind of disapointing...... http://db.tt/xGvmhOzK not only is aperture far behind when it comes to recover overexposed areas compared to it's competitors it also shows missing colors !

well i tried adjusting them, but it makes no difference, i am thinking it is a xorg issue

Fill color picker issue

When I double click on the fill color in the tool bar the color picker window opens. Unfortunately it is opening to a color that is not the color of my fill such as this orange here instead of the green. I am wondering if I have some sort of color theme option turned on somewhere? Any help to get this back to normal would be greatly appreciated.

Thank you, felt like I was going crazy
From: Jacob Bugge
Sent: Monday, August 11, 2014 10:29 AM
To: steve sheets
Subject: fill color picker issue
fill color picker issue
created by Jacob Bugge <https://forums.adobe.com/people/Jacob+Bugge> in
Illustrator - View the full discussion
<https://forums.adobe.com/message/6629962#6629962>

3d color plot

I am looking to do a plot in three dimensions with the z axis displayed in different colors corresponding to the voltage level of the input. I want it to look like a topographical map. I've attached a VI. I plan to replace the 3d curve VI with the new plot. Any help on this issue would be greatly appreciated. Thanks
S. LaCoursiere
Attachments:
Gen Mult Volt Updates-Int Clk_rev6.vi ‏175 KB

It is unavailable if you are using the Base package of LabVIEW or if you are not on a Windows system. If you are using Full or Pro on a Windows system, you can access this VI by opening the example finder (Help -> Find Examples..) Then select: Building User Interfaces -> Displaying Data -> Charts and Graphs -> Create IntGraph Color Table.vi. If that is not what you are looking for, this is a good place to find something else that may work for you.
Good luck,
Bob Young
Bob Young - Test Engineer - Lapsed Certified LabVIEW Developer
DISTek Integration, Inc. - NI Alliance Member
mailto:[email protected]

I am using Aperture 3 to edit RAW and JPEG photo images on my Macbook. I am having color printing issues with my Canon MP640 Pixma color printer. The image I see on my macbook is not reciprocated in printing from my printer?

My issue is that I am not getting print quality compared to the image I see on my screen. Just recently it has been very wishie washie. My printer is supposed to be excellent for producing color prints
I have contacted Canon support but they told me that the signals that are sent to the printer originate from an Apple product, therefore, it is an Apple mac problem not there's. I am wondering if my on screen proofing and/or printing profiles are correctly set. I notice that in 'print profiles' there are nine different options for printing from my particular printer. How confusing is that?
I have also found that when I choose a high standard print option my photo print comes out very red.
Can some kind person please help me? I don't seem to be getting any help from anyone else! Thanks in anticipation.

You didn't mention any color calibration being done on your monitor. This is an essential part of any color-correct workflow. What are you using to calibrate your monitor (and your printer)?
Print profiles (for soft-proofing as well as printing) are for specific combinations of paper & printer. The nine you have are each, most likely, for a common paper (perhaps mfr'd by Canon) to be used with your printer.
I don't know what you mean when you say "I choose a high standard print option".
Have you read the User Manual chapter on printing?
Printing Your Images
There is also a good appendix on calibration:
Calibrating Your Aperture System

Illustrator CS4, new Pantone color books, color channel issue

Since I installed the new Pantone color books, I've been running in a major issue which will affect our whole production line.
If an Illustrator CS4 file contains a Photoshop CS4 image which is using an "old" Pantone color in a color channel, it cannot be opened and I get an error message "File is unreadable". If I replace the "old" Pantone colour with its new equivalent in the color channel in Photoshop, the file can be opened normally.
In our work environment, this means going through all our images to check which one is using a color channel. A painful and time wasting procedure. Furthermore, if one of our suppliers doesn't have the new color books, they won't be able to open any of the files, both Photoshop and Illustrator, so they have no way to revert back to the old Pantone.
Is there another way to fix this?
Thank you

More on the Pantone PLUS saga, hoping to get some input from the users of this forum. I find their silence deafening, to say the least. This is a serious issue, that will cost our agency hours and hours of work if it isn't addressed. And we've already wasted hours of troubleshooting and discussions on how we could resolve it.
We're actually testing a workaround: using both the old and the new libraries in Illustrator. After consulting our suppliers, we've learned that this is what they also do. For them, it's a one shot to get the file to print. For us, it means cheating with files that will get edited again in the future. And the Pantone installer removes the old Pantone books from the Adobe folders for a reason which is mentioned on the download page:
The reason that the PANTONE Color Libraries that had been built into Illustrator need to be removed and replaced with the PANTONE PLUS Color Libraries is that, in Illustrator, a PANTONE Color can only have one data point with which it is associated. In the short term, in order to benefit from the new colors and data associated in PLUS, the PANTONE Libraries that are installed with Adobe Illustrator are removed and replaced with the new PLUS Libraries.
http://www.pantone.com/pages/Pantone/Pantone.aspx?pg=20721&ca=1
I worry this may lead to another bunch of issue, knowing how easily AI files get corrupted. What I need to know is:
What is the exact meaning of the Pantone warning about the "one data point per color?
What are the long term implications of using both Pantone libraries in an Adobe file? Or in the Adobe app?

Laser Jet CP1215 Color Matching Issues;

Colors are abnormally darker than the photos, art and copy especially those in red.They appear to be redishbrown.
But, not all the photos/art on a page are effected.
I have been working with HP Thech service guy who has put me through several days of worthless exercises, The printer's Self Test is perfect. I also created a custom color to no avail.
The problem evolved over the past month. I have replaced all the origional cartriges with 123 Inkjets HP Copatibles over the past year with no problems until now.

Hello Ghsmrt,
To get the best and most accurate support for your printer please post your issue to the printer forums. I will provide you the direct link below, which will take you directly to the site. It is possible that you will have to create a new profile, before you are to post your issue.
HP printer forum
Thanks
Clicking the White Kudos star on the left is a way to say Thanks!
Clicking the 'Accept as Solution' button is a way to let others know which steps helped solve the problem!

Color Alignment issue with HP LaserJet Pro CP1525nw

Hi -
I am having trouble with my color alignment. I have tried calibrating the machine several times and still have an issue. Anyone know of a quick fix? In a hurry to print properly!!!

@Chichi_Design
‎Thank you for using HP Support Forum. I have brought your issue to the appropriate team within HP. They will likely request information from you in order to look up your case details or product serial number. Please look for a private message from an identified HP contact. Additionally, keep in mind not to publicly post ( serial numbers and case details).
If you are unfamiliar with the Forum's private messaging please click here to learn more.
Thank you,
Omar
I Work for HP

Color management issue from Photoshop Acrobat

I'm having an issue that I believe has been isolated to Acrobat X related to Color Management, but was referred to this Photoshop forum because more experts in color management tend to read here. My thread in the Acrobat forum with several updates on tests is here: http://forums.adobe.com/message/4646650#4646650
The short version is that any RGB image I create in any app (including Photoshop, Illustrator, and InDesign, a non-Adobe app with Word, and Acrobat's own PDF from Screen Capture feature) displays in both Acrobat X and Adobe Reader with dull colors, very similar (if not identical) to how an RGB file with full intensity colors (i.e. R255 or G255) looks when converted to CMYK.
I've tried numerous settings in the Color Management system, and have Synchronized my Color Settings via Bridge across all Adobe CS6 apps. I've tried synchronizing to both the default North American General Purpose 2, and the (sometimes suggested) Monitor Color, using a calibrated profile for my Dell display from OS X's built-in tool. Have also tried various settings of Preserving Embedded Profiles, ignoring them, Assigning a new Color Profile to a document, turning off color management completely, etc. No change in result.
I have a multi-monitor setup (3 external Dell displays connected to a Macbook Pro, 2 of them via USB video devices), but I've also tried making each display (including the laptop's built-in display) my Primary monitor and can see the color shift on each one, so it doesn't appear to be a calibration issue.
This issue is on my Mac at the office. I have a similar setup at home (albeit a MacPro 1,1 vs. a laptop) but with the same Dell monitors and CS6 software installation, and I can take the same document (whether it's InDesign, Illustrator, or Photoshop), make a PDF of it, and it displays with 100% accurate colors when viewed in Acrobat X.
In addition to the tests mentioned in my original thread, I've also tried uninstalling and reinstalling both Acrobat X and Adobe Reader.
I believe the issue is related to Acrobat, as I can repeat the issue with no other apps than Acrobat in the workflow: if I display a full-intensity RGB image on screen, then use Acrobat X to create a PDF from Screen Capture, the resulting PDF immediately shifts to the dull colors.
Have also thoroughly checked through Acrobat's preferences, as it seems almost as if there's a setting somewhere along the lines of "View all PDFs in CMYK color gamut", but no such setting exists. I did a complete uninstall of Acrobat X as well, which I imagine would also dump its Preferences, so it would be a clean reinstall.
Another interesting note: Apple's Preview app seems to display the PDF with accurate RGB colors, so I know the PDF actually has the correct color definitions intact. But the same PDF opened in Acrobat X or Reader side-by-side displays the dull colors.
Any thoughts?
-R

i wasn't able to follow your lengthy post, and the color management chain is too complicated (for me) to address here other to say Acrobat reads tagged elements and converts their colors to Monitor RGB (so you must have stripped the profiles in the PDF, and the Acrobat CMS is applying or passing through the wrong profile)
further, if you don't want to rely on profiles, your safest bet (for screen viewing) is to CONVERT everything to sRGB (but i would still include the profile in case someone wants to display or print the document 'accurately'
Here is a look at a several critical color setting in Export to Acrobat that control: Downsampling, Compression, Color Conversions, Destination, and Tagging (click on image for blowup):
PS:
these panels were grabbed from an InDesign Export PDF process, but Photoshop should have similar options somewhere

HP T790 color plot issues

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