P: 2nd Monitor image dullness after migrating to MacOS 10.11 El Capitan (profile issue)

Sitrep: nothing improved for 10.11.3 (I only used the old profile though, didn't do a new calibration) which was released today.

Has anyone tried the latest El Capitan beta (10.11.4)?

No dice. Profiles resulting from changing the settings (there are only High, Medium, and Low btw) do not have any reflections in Lightroom's rendering. In terms of file size, High gives ~577KB .icc file, Medium ~352KB, Low ~321KB.

I do have discovered another option, "Enhance effective resolution of colorimetric PCS-to-device table" which seemingly allows me to change the LUT size, but only for XYZ LUT. And for dispcalGUI XYZ LUT has always to be generated along with a matrix profile...not sure if XYZ LUT is worth going with my amateur-grade Dell P2416D.

Disappointing of Apple, two updates and still not fixed. Keenly interested in this as well.

re dispcalGUI table profiles. I'm not using the tool (yet - It looks really promising!). I had a quick look and recommend to experiment with "Profile quality" (within the profiling tab).

From the online help: "Profile quality - Sets the level of effort and/or detail in the resulting profile. For table based profiles (LUT), it sets the main lookup table size, and hence quality in the resulting profile. For matrix profiles it sets the per channel curve detail level and fitting “effort”."

I found that the Apple CMS bug is related to profile size. Small table-based profiles ~26K, perhaps more are working. The larger ones (~100K+) trigger the bug. Of course this is a tradeoff but I'm getting sufficiently good results with the smaller ones.

But this is with a different profiling tool. Hopefully the method above will allow you to get them into the right range with dispcalGUI. Please keep us posted.

This seems still unfixed for OS X El Capitan 10.11.2 . Has anyone (I mean the Adobe folks :p) got updates from Apple?

Meanwhile, I use dispcalGUI to calibrate my monitor with Spyder4. Can anyone tell me how I can generate a lesser-sized LUT with it? much appreciated.

(In dispcalGUI's Profile Tab, even if I lower Profile Quality, I still see the issue at Lightroom with the resulting profile, and dispcalGUI's own profile information tool still indicates the resultant profile as "Color Look Up Table: Grid Steps: 33; Entries: 35937", so I believe I haven't succeeded at generating a smaller LUT profile).

I'm less interested in generating a matrix profile since for my monitor it gives terrible unnatural gray shades.

All right, I see what you mean. I misunderstood. I should have mentioned Lightroom 4 in my initial post. Thank you very much for your help. I will keep an eye on this thread for future updates.

I did not verify Lr 4. In theory, it should be affected as well. Use caution to upgrade to El Capitan.

Ah, so then I should be unaffected while using Lightroom 4. Great! Thank you Mr. Chen.

It affects all Lr 6.x versions. El Capitan does not seem to handle some large LUT based display color profiles correctly when rendering 16-bit images (which the default bit-depths that Lightroom uses internally).

Hey, I've been following this thread and I'm a little confused. Is this a general systemwide problem with display profiles in El Capitan, or is it pretty much limited to Lightroom 6 and (more or less) when using two monitors?

I'm wondering because I haven't upgraded to El Capitan yet and would hold off until this issue is fixed if need be. Also, I currently use an earlier version of Lightroom, would that be affected?