apart from the not so reassuring results of my measurements regarding the uniformity of my z27x that I posted here: <a href="http://liftgammagain.com/forum/index.php?threads/new-hp-dreamcolor-monitors-4k-capable.2694/page-11" target="_blank" rel="nofollow">http://liftgammagain.com/forum/index.php?threads/new-hp-dreamcolor-monitors-4k-capable.2694/page-11</a>
I also wanted to check the factory sRGB preset for accuracy and got very strange results. I suppose that I made a mistake, maybe someone could point me in the right direction.

I used my new i1 Display Pro (i1D3) and Lightspace DPS Quick Profiling.
Probe options were: cd/m2, LCD, RGB LED (which seemed to be the closest to the actual GB-r-LED backlight),
Profiling options: target sRGB, Closed Loop Mode, Primary and Secondary.
The HP z27x was in the sRGB D65 preset mode, video levels deactivated, connected via HDMI to my Notebook.
No ICC profiles active in Win7, no color correction via nvidia drivers.

The Z27x Calibration Factory Report
that came with the display includes charts for AdobeRGB and sRGB, so I just picked one to see what results I get. They claim to have done
the calibration/validation with an Konica/Minolta CA-310. Their validation shows an Average Delta E for sRGB D65 of 0.808, Delta E for White and Gray
below 2. So..I don't understand why I get these strange results and was hoping, somebody could explain me, whats going on

Nothing wrong with the LightSpace DPS results.
The display just looks to be poorly calibrated.

Steve

Steve
I wasn't doubting lightspace. I tried Calman and argyll, lightspace feels the most professional. I was hoping that looking at my results, a more experienced person in calibration could point me to a possible user error (regarding settings for meter, win7 color profile, gpu settings etc.) If you tell me that I did everything right and that therefore the error comes from the bad factory calibration, alright, thats all I need to hear. I just want to be sure that in the end after recalibrating I know that what I see is right.

I do have one more question. How can I use offsets for my meter in lightspace dps to verify? I have an argyll ccmx file somebody created for the i1D3 z27x combination. Where should I put in these offset values or how? I understand that in lightspace I can measure with my colorimeter and (if I've had one) my spectrometer and lightspace calculates the offset? How could I use an already calculated offset?

Or can .edr files be loaded into the calibration probe settings (where I choose between RGB LED, White LED, Wide Gammut CCFR etc.)?

You will need to manually enter the meter offsets into the available boxes for RGBW.
It is as simple as that.

Ok, so you mean, this offset values have to be put into the fields below "Active Probe / Display Data? Understood! And do you know which setting I then would have to choose as Calibration Setting? I understand that whatever shows up there depends on what is saved in the meter, but the i1D3 is used by many people and recommended by your company so you might know what would be the right setting for the GB-r-LED panel of the z27x in combination with the right correction/offset matrix? I'm sorry that I am asking so much but I really would like to use LightSpace to verify and find out since I sincearly trust it the most. I will take advantage of the temporary free licence of Calman RGB Spectracal gave me to calibrate my z27x because of the direct usb connection and step by step manual which lets me rule out some of the variables (user error, Win7 color profiles, GPU ect.) but since that is not possible with LightSpace (for reasons you explained me and I understand) I would at least be able to verify with LightSpace (and with the right correction matrix) because I trust your software.

When doing a 'spectro' offset, you can use any setting as you are overriding it with the spectro offsets, but you MUST use the same settings as used when doing the comparison with the spectro to get the offset data.

sorry, I can't make any sense of that sentence. What do you mean exactly by "doing a spectro offset" and "doing the comparison with the spectro"?

I have an argyll ccmx file for the combination i1d3 and z27x, that was created with an i1 Pro spectro which holds three triples of numbers (XYZ_X XYZ_Y XYZ_Z). I suppose it's the RGB xyY values, there seems to be no values for white point correction. So, either I create a .pbd with the lightspace custom meter profile editor from displaycalibrationtools.com and load it into the "Active Probe / Display Data" field (blue circle, attached image) or type the values in manually (green circle, attached image). The Reference Probe / Display presets I leave empty (yellow circle, attached image)? Then, whatever option I choose in the Calibration Settings doesn't matter because it will be overwritten by the values below the "Active Probe / Display Data" fields?

Have you read the 'Probe User Guide'?
http://www.lightillusion.com/probe_use.html
That should help.

Steve

Steve..I really appreciate your help and I suppose you have more important things to do but I'm under the impression that you didn't really read what I was asking you. The Probe User Guide does not answer any of the questions in my last post. I know how it is normaly done, but as I said, I don't have a spectro. So I can't do it the normal way. I want to use an already existing file that contains the calculated offset between an i1D3 and an i1 Pro measured on an HP z27x. It's all in my last post, I hope you can help me out.

In dispcalGUI/Argyll I can either create offset files with a colorimeter+spectro for my display or load offset files other people have created for that specifc type of colorimeter+display to get better results if I don't own a spectro myself. I'am trying to use the offset values of a file like this in lightspace and in the correct way. Maybe this is something not very common among lightspace users.

The basic concept is that you measure RGBW with the actual probe you are going to use, on the display in question, and save the results, and then also measure RGBW with the 'reference' probe, also saving that data.

You then re-connect the actual probe you will use for making the profile, and ensure the correct data file is selected within the 'Reference' drop-down, and also the 'Active' probe drop-down. You will then have valid probe matching.

The problem you have is the 'data' file you have is not correct for such use - it is basically invalid as you need the data from both probes, not a simple offset file, generated from your actual display.
Loading other people's offsets is just not valid - you must make the probe comparison on your actual display, just before performing the profiling, and so that is the only approach we support.

Ok, thank you. I see that this will give me the best results. But until I get a spectro, I suppose that a file that somebody acually made with an i1D3 a spectro and the z27x will get me closer than the RGB LED or RG Phosphor (which was made for the GB-r-LED Dell U2413) presets I can choose in the Calibration Settings. I will see if I can rent a spectro anywhere in my area. Anyway..with the info on how you compare meter profiles (http://displaycalibrationtools.com/display-profiling-calibration-tools/meter-profile -comparison/) I could still do my own math

Using an offset file from someone else can easily make the readings worse, as you have no idea if their display has the same spectral response as yours!
You can easily get a wider error in the final readings.
It is why we never recommend that approach!