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

  • From: Serhat Abaci <serhat@xxxxxxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Fri, 20 Sep 2013 23:23:19 +0200

I have no knowledge about that, if you happend to have an i1 Pro you could
test reading with 1.4 and 1.6 and providing the information here


2013/9/20 Michael Darling <darlingm@xxxxxxxxx>

> Is it known if the 1.6 drivers for i1 Photo Pro 2 & equivalent have the
> same bug?
>
>
> On Fri, Sep 20, 2013 at 4:56 PM, Serhat Abaci <serhat@xxxxxxxxxxxxxxxx>wrote:
>
>> 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
>>>
>>
>>
>

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