[argyllcms] Re: Argyll 1.6.0 - Shallow blacks on Epson 3880

  • From: Serhat Abaci <serhat@xxxxxxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Fri, 20 Sep 2013 22:56:59 +0200

There is a BUG with 1.6 ColorMunki ArgyllCMS Drivers
discussed here
http://www.nifty-stuff.com/forum/viewtopic.php?pid=66874#p66874
http://www.luminous-landscape.com/forum/index.php?topic=82171.0
http://www.luminous-landscape.com/forum/index.php?topic=82133.0

just revert to 1.4 and reread your patches


2013/9/20 Jacek Pytowski <jpyto@xxxxxxxxxxx>

>
>
> Hi,
>
> ** **
> I tried everything and nothing - I strongly need some help.****
>
> I’m trying to calibrate & profile my Epson 3880 and I’ve strange problem
> with shallow blacks (shallow and cold) and with details in dark shadows
> (very dark ones: 0;0;0 – 24;24;24) After some investigation I’ve found that
> all profiles I’ve created are a little bit strange and provide to
> transformation in which input value RGB (0, 0, 0) is processed to  (5, 0,
> 73)!****
> 73 on blue channel!  Nearly there is no difference printing with BPC or
> without (without even is a little bit better).****
> I compared those results to original Epson profile for Glossy paper and
> their black color is processed to output value RGB(3, 2, 4) and on
> printouts looks much more better.****
>
> Details:****
> ---------------------****
> * Printer: Epson 3880****
> * Paper: Epson Premium Glossy Photo Paper****
> * Measurement Device: ColorMunki Photo****
> * Argyllcms :  1.6.0****
>
> Command lines used to create profile:****
> ---------------------****
> * targen -v0 -d2 -G -g128 -e8 -B8 –f2160 -c "Epson Stylus Pro
> 3880_3885_3890 PremiumSemiglossPhotoPaper.icc" my_profile
> * chartread -v -H my_profile
> * colprof -v -qm -cmt -dpp -S "AdobeRGB1998.icc" my_profile****
>
> ti3 file:  http://www.dane.pixel-tech.pl/temp/my_profile.ti3.txt
>
> Results (data):
>
> ---------------------
>
> * Test image  (AdobeRGB):
> http://www.dane.pixel-tech.pl/temp/Full_AdobeRGB_360dpi.jpg
>
> * Processed by original Epson profile (untagged RGB, raw output values to
> printer):
> http://www.dane.pixel-tech.pl/temp/ProcessedByOriginalEpsonProfile_RelativeIntent.png
>
> * Processed by my profile generated using Argyll (untagged RGB, raw output
> values to printer):
> http://www.dane.pixel-tech.pl/temp/ProcessedByArgyllProfile_RelativeIntent.png
> ****
>
> Visual result on printouts:****
> ---------------------****
>
> Original Epson profile: ****
> * printout is too warm, even grays are not neutral but details in shadows
> are perfect and black color is really deep.****
>
> My profile from Argyll:****
> * printout is very neutral (maybe even a bit cold but not sure about
> this), B&W parts are also very neutral. There is problem with details in
> shadows especially visible in this place:
> http://screencast.com/t/1WASD69fvA  (on printout those areas are
> completely flat). Black color is shallow if you compare it to this one from
> Epson profile.****
>
> I will be appreciate for any help, suggestion etc. I tried a lot of
> different parameters but main problem with black color still remains.****
> Thanks in advance****
>
> Jacek
>

Other related posts: