[argyllcms] Re: Am I stupid or is it something else... my color management sucks.

  • From: Roger Breton <graxx@xxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Sun, 11 Apr 2010 10:48:04 -0400

Magnus,

These days, I tend to recommend the Spyder3 over the i1d2. I think the i1d2
is a little overpriced compared to the Spyder3, and I had a few instances
where I ended up with "reddish" colors with the i1d2. So the i1d is not my
colorimeter of choice. My instrument of choice remains the EyeOnePro...

Best / Roger

> -----Original Message-----
> From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-
> bounce@xxxxxxxxxxxxx] On Behalf Of Magnus Berg
> Sent: 11 avril 2010 09:25
> To: argyllcms@xxxxxxxxxxxxx
> Subject: [argyllcms] Re: Am I stupid or is it something else... my color
> management sucks.
> 
> Thanks for your answers Roger and Steffen.
> 
> Steffen: I knew it, it was me who was stupid. :-) It's no way around a new
> color meter.
> 
> Roger: I just find out that I can buy a Eye-One Display LT for not much
more
> than a Spider 3. Which one should I chose?
> 
> Magnus
> 
> 2010-04-11 15:16, Steffen skrev:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA256
> >
> > The Sypder2 is indeed the problem here. It is not compatible with
> > widegamut displays. They added 'support' for this with the spyder3.
> >
> > Greets,
> > Steffen
> >
> > Am 11.04.2010 14:38, schrieb Magnus Berg:
> >
> >> Thank you for your answer Roger.
> >>
> >> I have read the same thing during my search for a solution; that
> >> Spyder
> >> 2 can differ from one unit to unit. And yes, if no one else here on
> >> the list has any better suggestion to a solution I'm willing to buy a
> >> new color meter. Spyder 3 it's that expensive.
> >>
> >> Magnus
> >>
> >>
> >> 2010-04-11 14:17, Roger Breton skrev:
> >>
> >>> Magnus,
> >>>
> >>> I have two Spyder2 here and one of them results in profiles with a
> >>> terrible green cast. I would not be surprised that the instrument
> >>> itself is the source of your problems.
> >>>
> >>> Roger
> >>>
> >>>
> >>>
> >>>> -----Original Message-----
> >>>> From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-
> >>>> bounce@xxxxxxxxxxxxx] On Behalf Of Magnus Berg
> >>>> Sent: 11 avril 2010 07:40
> >>>> To: argyllcms@xxxxxxxxxxxxx
> >>>> Subject: [argyllcms] Am I stupid or is it something else... my
> >>>> color management sucks.
> >>>>
> >>>> Hi, I'm new to the list and got a big problem.
> >>>>
> >>>> I bought me a used Spyder 2. Realized that my old CTR couldn't
> >>>> produce enough light (90 cd/m^2 not 140 cd/m^2 that sRGB require).
> >>>> Digged a deep hole in my wallet and bought a quite expensive NEC
> >>>> 2690WUXI2. Now my color managed application show a green cast after
> >>>> calibration and
> >>>>
> >>>>
> >>> proofing.
> >>>
> >>>
> >>>> It's not fun at all. :-(
> >>>>
> >>>>
> >>>> This is how I do the calibration and proofing:
> >>>>
> >>>> I use dispcalCUI. After that I had use the screen's OSD to set the
> >>>> 'White point', 'White level' and 'Black point' i got this nice
> >>>> values then I do a
> >>>>
> >>>>
> >>> 'Check
> >>>
> >>>
> >>>> all':
> >>>>
> >>>> Doing check measurements
> >>>> Black = XYZ   2.28   7.37   0.00
> >>>> Grey  = XYZ  27.17  28.58  31.02
> >>>> White = XYZ 130.26 137.22 149.83
> >>>> 1%    = XYZ   1.38   1.46   1.58
> >>>>
> >>>>      Target Brightness = 140.00, Current = 137.22, error = -2.0%
> >>>>      Target 50% Level  = 50.07, Current = 28.58, error = -15.4%
> >>>>      Target Near Black =  1.37, Current =  1.46, error =  0.1%
> >>>>      Target white = x 0.3128, y 0.3291, Current = x 0.3121, y
> >>>> 0.3288, error
> >>>>
> >>>>
> >>> =  0.38
> >>>
> >>>
> >>>> DE
> >>>>      Target black = x 0.3128, y 0.3291, Current = x 0.3120, y
> >>>> 0.3299, error
> >>>>
> >>>>
> >>> =  1.22
> >>>
> >>>
> >>>> DE
> >>>>
> >>>>
> >>>> Then dispcalGUI send this command to dispcal:
> >>>> dispcal -v -d1 -c1 -yl -P0.500317863954,0.485345838218,1.0 -qh
> >>>> -t6500
> >>>> -b140 -G2.2 -f0 -k0 -A4 -B0.0001 colprof -v -qh -al
> >>>>
> >>>> Before, then I only did a -qm calibration, I got strong red casts
> >>>> on my calibrated screen, and the profiled applications gave strong
> >>>> green casts.
> >>>>
> >>>>
> >>> The
> >>>
> >>>
> >>>> strange thing then was that the red cast only occurred on color
> >>>>
> >>>>
> >>> 254,254,254 to
> >>>
> >>>
> >>>> around 249,249,249 but tones darker than that looked neutral grey
> >>>> with my eyes. After that I chose -qh this color tones and others
> >>>> looks neutral,
> >>>>
> >>>>
> >>> with my
> >>>
> >>>
> >>>> eyes.
> >>>>
> >>>>
> >>>> After that I load the calibration profile done after the command
> >>>> above I
> >>>>
> >>>>
> >>> got
> >>>
> >>>
> >>>> this then I run dispcal -r -yl:
> >>>>
> >>>> magnus@debian:~$ dispcal -r -yl
> >>>> XRandR 1.2 is faulty - falling back to older extensions Place
> >>>> instrument
> >>>>
> >>>>
> >>> on test
> >>>
> >>>
> >>>> window.
> >>>> Hit Esc or Q to give up, any other key to continue:
> >>>> Current calibration response:
> >>>> Black level = 0.60 cd/m^2
> >>>> White level = 135.50 cd/m^2
> >>>> Aprox. gamma = 1.92
> >>>> Contrast ratio = 226:1
> >>>> White chromaticity coordinates 0.3099, 0.3266
> >>>> White    Correlated Color Temperature = 6676K, DE 2K to locus =  4.9
> >>>> White Correlated Daylight Temperature = 6676K, DE 2K to locus =  0.3
> >>>> White        Visual Color Temperature = 6490K, DE 2K to locus =  4.7
> >>>> White     Visual Daylight Temperature = 6664K, DE 2K to locus =  0.3
> >>>> The instrument can be removed from the screen.
> >>>>
> >>>>
> >>>> I understand nothing. How can I have gamma 1.92 and the above
> >>>> temperature then I chose to calibrate to 2.2 and 6500? And why is
> >>>> there a green cast on the pictures viewed in Color managed
> >>>> applications?
> >>>>
> >>>> Did I understand things right:
> >>>> I should load the profile as a system wide screen calibration
> >>>> profile with dispcalGUI, the same as you do with dispwin -L. And
> >>>> then I load then same profile to the color managed applications as
> >>>> a screen color profile?
> >>>> It's then I load then profile into then color managed applications
> >>>> that
> >>>>
> >>>>
> >>> then
> >>>
> >>>
> >>>> green cast ampere.
> >>>>
> >>>> I have struggled with this for weeks, and googled a lot, and
> >>>> reading this
> >>>>
> >>>>
> >>> mail
> >>>
> >>>
> >>>> list without finding any useful help. Therefor I ask you for help.
> >>>> The
> >>>>
> >>>>
> >>> only thing
> >>>
> >>>
> >>>> I want is a good color managed environment for working with sRGB
> >>>> pictures.
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>
> >>
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> > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
> >
> >
> iF4EAREIAAYFAkvBy6wACgkQJYXm27tZN3e7cwEAyeZa6oZBvm5tAvys66Qc9a
> 72
> >
> 6ITd1+i7DGDjRnyC1kwBAIqW3EuOKQdfJBIeDlq0rB9Z5n3aggbZRZz+pCe09so2
> > =Ekit
> > -----END PGP SIGNATURE-----
> >
> >
> >
> >
> >



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