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Thread started 29 Jan 2017 (Sunday) 12:31
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Workflow on a AdobeRGB hardware calibrated monitor

 
yeah1000
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Post edited over 2 years ago by yeah1000. (3 edits in all)
     
Jan 29, 2017 12:31 |  #1

Hi,
i purchased a Dell UP 2716D wide gamut monitor and calibrated it with Dell XRite i1Display Pro and am really struggling with the workflow now. The monitor supports internal hardware LUT calibration.

The following questions came up:
1) If i did not use the HW calibration then the colours on the monitor looked VERY yellow but the calibrator results were very good. All the delta E values were around 1.0. I cannot figure out why the result is so yellow. During calibration i could not get the RGB values to the required center level in the software. Could this cause this? Or should the software automatically adjust for this? Should it calibrate properly with non center level RGB values?
2) If i performed the HW calibration (with DUCCS) and set the monitor to "AdobeRGB" then the calibration result is better to the eye but the delta E values reach 2.4.

So i opted for the HW calibration:
3) Since my monitor is now calibrated in AdobeRGB mode, does it mean that all the jpg files i view in the web will get stretched to the AdobeRGB colorspace meaning that i see them differently from what was intended?
4) After the HW calibration i still get an icc profile, why is this required? The calibration should all be inside the monitor LUT now? Anyway, the profile was set as windows icc profile.
5) What should i use for the working space RGB color? I assume it is the resulting icc profile (WIDE.icc). What should i select for the assigned profile? (i assume it is the same WIDE.icc)
6) Having set the WIDE.icc profile as "working space" and "assigned profile" in Photoshop, how should i save the images as jpg? If i convert the images to sRGB before saving then the images look different (oversaturated colours) in non colour managed programs. If i DO NOT convert them then the saved jpg images look exactly the same in non colour managed programs as in PS. Which version of the image now other people see when they view in in the web? Note that i am not embedding the ICC profile in the images since that may or may not work for different browsers etc.

Thanks




  
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tim
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Jan 29, 2017 14:15 |  #2

This is a fairly complex set of questions and you're going to need a real expert to answer them. I suggest you call Dell since some of your questions are support questions. You may also need to buy yourself a book on color management and do a fair bit of reading, and find a specialist color management forum.


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Damo77
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Jan 29, 2017 16:17 |  #3

yeah1000 wrote in post #18258727 (external link)
1) If i did not use the HW calibration then the colours on the monitor looked VERY yellow but the calibrator results were very good. All the delta E values were around 1.0. I cannot figure out why the result is so yellow. During calibration i could not get the RGB values to the required center level in the software. Could this cause this? Or should the software automatically adjust for this? Should it calibrate properly with non center level RGB values?
2) If i performed the HW calibration (with DUCCS) and set the monitor to "AdobeRGB" then the calibration result is better to the eye but the delta E values reach 2.4.

All the delta E values in the world are meaningless if your screen doesn't match your pro lab prints. How's the print comparison?

yeah1000 wrote in post #18258727 (external link)
3) Since my monitor is now calibrated in AdobeRGB mode, does it mean that all the jpg files i view in the web will get stretched to the AdobeRGB colorspace meaning that i see them differently from what was intended?

This is a genuine issue, yes. Now that you own a wide-gamut screen, you must spend ALL your time in colour-managed programs. Always browse your images in Adobe programs such as Bridge, never in Windows Viewer, for example. Likewise, only ever browse the internet in a colour-managed browser (of which Firefox (external link) is the best), never in non-colour-managed ones such as IE.

yeah1000 wrote in post #18258727 (external link)
4) After the HW calibration i still get an icc profile, why is this required? The calibration should all be inside the monitor LUT now? Anyway, the profile was set as windows icc profile.

There is a difference between calibration and profiling. As Tim said, this is a complex area, so you'll need to spend some time reading.

yeah1000 wrote in post #18258727 (external link)
5) What should i use for the working space RGB color? I assume it is the resulting icc profile (WIDE.icc). What should i select for the assigned profile? (i assume it is the same WIDE.icc)

Do you mean in Photoshop's Color Settings? I know you'll find this hard to believe, but that setting is almost irrelevant. Leave that entire window on "North America General Purpose 2" as it installed.
Definitely NEVER use your monitor profile as an image profile.

yeah1000 wrote in post #18258727 (external link)
6) Having set the WIDE.icc profile as "working space" and "assigned profile" in Photoshop

Oh no!! Never never never never do this. Your monitor profile is not related to your images at all. Keep working in one of the standard image spaces - sRGB, Adobe RGB or ProPhoto RGB.

yeah1000 wrote in post #18258727 (external link)
how should i save the images as jpg? If i convert the images to sRGB before saving then the images look different (oversaturated colours) in non colour managed programs. If i DO NOT convert them then the saved jpg images look exactly the same in non colour managed programs as in PS. Which version of the image now other people see when they view in in the web? Note that i am not embedding the ICC profile in the images since that may or may not work for different browsers etc.

Always convert to sRGB for web. Note: Make sure you're converting, not assigning. Big difference.


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BigAl007
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Jan 29, 2017 19:09 |  #4

I have the UP2715K which also supports the hardware LUT. I use the Dell management software to switch profiles as necessary. So when working in Adobe products, and other colour managed software I use AdobeRGB, but when I switch to Chrome, Edge, or even IE (I have to use IE with Silverlight to view my SKY TV content) it auto switches to sRGB. This actually seems to work really really well. At least for me.

I haven't been able to get the Xrite i1Pro yet so haven't been able to run my own calibration etc. I'm still using the factory settings, where all of the ΔE values for both AdobeRGB and sRGB were below 2.0. My images on screen still match my existing prints very well indeed. Just as they did for my old system. The only thing I had to do was figure out the correct brightness setting.

When I got this in August last year I checked most of the Windows included programs and found that most of them were not colour managed. It seemed that File Viewer shows thumbnails correctly, I have a set of test images that include one with a deliberately skewed profile, that will only look anywhere close to correct in a managed program. At that time the new Windows photo viewer, Photos, was not colour managed. I happend to open the test images in it a couple of weeks ago, nad it now seems that Photos is colour managed.

I was surprised by this, but still would not recommend using any of the Microsoft image viewing programs. Generally the resizing algorithms are not the best.

Alan


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Picture ­ North ­ Carolina
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Jan 30, 2017 06:58 |  #5

From Adobe

Work with color profiles (external link)


Website (external link) |

  
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Workflow on a AdobeRGB hardware calibrated monitor
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