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Max_Ramuschi
Known Participant
December 27, 2013

P: ICC Table Profiles clipped shadows under OSX

  • December 27, 2013
  • 166 replies
  • 3911 views

Hi, I've just found a really bad issue occurring in Lr 5 (but also in all other Lightroom versions) under Mac OSX 10.9 with a calibrated monitor: dark shadows (from a value of 20 to 0) are all clipped (pure black with no detail and no textures) while the histogram remains ok, indicating NO clipped shadows at all. This issue afflics also ACR.

Photoshop for now is the only software under MAC that reproduces dark shadows correctly: Library Module shows a bit darker and shifted shadows than Ps but acceptable, Develop Module is really bad showing brutally clipped shadows (but you work in the Develop Module right?!).

The same problem occurred also in OSX 10.8 but it was related only to LUT profiles, creating a Matrix based profile problems were solved.

Now the issue occurs with both Matrix and LUT profiles, v2 and v4. There's no apparent way to make Lr working right.

Under Windows no problems at all: Bridge, Photoshop, ACR, Lr (Library Module and Develop Module) show the same correct NOT clipped shadows.

I tested 8 different Mac running 10.9 with different GPU, different monitors, different profiling Softwares (Color Eyes Display Pro, Eizo Color Navigator, BasICC Color, i1 Profiler). Same results.
I tried to change the gamma value (2.2, sRGB, L*) problems remain. I tried to change ICC version (v2, v4) problems reamain. I tried to change profile type (LUT, MATRIX) problems remain.

How can a photographer work professionally on RAW images if shadows are bad reproduced?

Why Photoshop can reproduce shadows correctly while Lr isn't able to do that?

Why this happens only on a Mac enviroment?

Is Lr based on ColorSync (that can't handle profiles correctly) while Ps isn't (because it can handle and it has no problem)?

Please Adobe, FIX IT for all professional photographers, we can’t use Lr for serious works under Mac.

Max Ramuschi
Adobe Certified Expert

p.s.: Added a 100% Crop screenshots that shows the problem, some photos are even worse...

This topic has been closed for replies.

166 replies

MadManChan2000
Adobe Employee
Adobe Employee
December 3, 2014
If you are experiencing this issue, the 'workaround' for the meantime in Develop is to turn on Soft Proofing. You can set the proof profile to your display profile for normal cases, or to the desired output (e.g., print) profile for real soft proof situations. Either way, having Soft Proof enabled will force Lr to use its own internal display color management system, which avoids the issue. I know this does not help the Library module or other modules, but at least for the purposes of image editing, this should help.
Max_Ramuschi
Known Participant
December 2, 2014
This problem is not solved, please change the feedback status.
Max_Ramuschi
Known Participant
December 2, 2014
You probably have a table profile (Eizo creates this kind of profiles as default). Same behaviour here.
Inspiring
December 2, 2014
I can confirm about soft proofing, its the only way to see the same in LR and Photoshop. Something is still wrong here
Inspiring
December 2, 2014
monitor contrast
I did an "weird" calibration with low contrast 2.0 cd, 51:1 contrast ratio (monitor get very low contrast)
Eizo Color navigator OSX 10.10, ICC profile 2.2
Is shadow clipping in LR even more visible then? see screenshot

If native contrast 0.2 cd Im sure the effect becomes more subtle. Perhaps most of us have native contrast and does not see the effect so easily. I usually prefer little less contrast on my Eizo, 0.3 - 0.4 cd/m2

Inspiring
December 2, 2014
look here, I tried to accelerate the effect, so I did calibration with ultra low contrast
black level 2,0, contrast ratio becomes as low as 51:1
ICC (table?)profile version 2.2 Eizo color Navigator 6.4.7
OSX 10.10.
Max_Ramuschi
Known Participant
December 2, 2014
Update 2: I managed to match Ps shadows with the table Eizo profile enabling soft proofing to simulate the Eizo profile in use.

To recap: I can match Ps and ACR shadows with table profiles (both eizo and x-rite) only if I activate soft proofing in the Develop module and set it to simulate the monitor profile in use. At this point it seems that if we want Lightroom to work properly we should skip Colorsync which seems to not support correctly table based profiles. Is this right?
Max_Ramuschi
Known Participant
December 2, 2014
The X-rite table profile I am talking about is the same I sent to you, which is version 2.1. With this profile I can match Ps and ACR only turning on soft proofing.

With the Eizo 2.1 table profile there's no way to have correct shadows, they are always way too dark.
MadManChan2000
Adobe Employee
Adobe Employee
December 2, 2014
Is the X-Rite table profile version 2.1 or version 4.x?
Max_Ramuschi
Known Participant
December 2, 2014
Update: with the X-Rite table profile and soft proofing on to simulate the X-rite profile (previously soft proofing was set to simulate Adobe RGB) I have perfectly matching colors and shadows with Ps. With soft proofing off, the image in Lr remains too different.