[argyllcms] Re: RGB Printer Profiling / Issues with Blacks and Shadows
- From: Andreas Hebeisen <andreas.hebeisen@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Wed, 3 Aug 2011 06:38:01 +0200
Hello
On 03.08.2011, at 02:19, Graeme Gill wrote:
>
> Hi,
> it's hard to comment without something concrete to go on. Could you
> please
> mail me a .ti3 file and the corresponding ICC profile and the command line
> you used to create it, that exhibits this problem.
Hmm ... actually, I've already included all that stuff in my earlier posts.
Here's one of the particular excerpts:
> Here are the steps I used to create the new profile with ArgylCMS:
>
> 1. targen -v -d2 -G -f1764 -g128 2011_V6-0_3800mk_Epson-EMP_EMP_1440_0_8bit
> 2. printtarg -v -ii1 -t360 -pA4 2011_V6-0_3800mk_Epson-EMP_EMP_1440_0_8bit
> 3. Four target sheets printed with "Adobe Color Printer Utility".
> Color Settings to "Off (No Color Adjusment)" in the "Print Settings"
> part of the printing dialog.
> 4. Letting the papers dry for something between 1 and 2 hours.
> 5. chartread -v -H -T0.4 2011_V6-0_3800mk_Epson-EMP_EMP_1440_0_8bit
> 6. colprof -v -qu -i D50 -o 1931_2 \
> -S /Library/Application\
> Support/Adobe/Color/Profiles/Recommended/ProPhoto.icm \
> -cmt -dpp -f 2011_V6-0_3800mk_Epson-EMP_EMP_1440_0_8bit
> 7. Printing the evaluation image from Apple Aperture with render intent set
> to Perceptual and
> another print with render intent set to Relative Colorimetric with
> activated BPC.
>
> The AgryllCMS settings used above were inspired by:
>
> http://www.luminous-landscape.com/forum/index.php?topic=53408.msg436392#msg436392
>
> My issue also appears when I use much simpler settings as used in this guide:
> http://www.argyllcms.com/doc/Scenarios.html#PP1
>
> And again, for those who like to take a deeper look, all the files (except
> the TIFF-images) generated with the commands listed above, downloadable from
> here:
>
> http://home.ggaweb.ch/files/mail/2011/2011_V6-0_3800mk_Epson-EMP_EMP_1440_0_8bit.zip
I have to point out, that i'm pretty shure meanwhile, that my workflow is OK.
And here's why: I'm only facing the problem with Apple Aperture _and_ profiles
created with ArgyllCMS. To sum things up, a quick overview about the current
situation:
1) Profile created with Eye-One iMatch 3, printed from Adobe Lightroom,
Photoshop CS 5, Pixelmator etc.
Result: everything OK
2) Profile created with ArgyllCMS, printed from Adobe Lightroom, Photoshop CS
5, Pixelmator etc.
Result: everything OK, great colors (better IMHO than from the Eye-One iMatch
profile)
3) Profile created with Eye-One iMatch 3, printed from Apple Aperture 3.1.3:
Result: everything OK
4) Profile created with ArgyllCMS, printed from Apple Aperture 3.1.3:
Result: Low Dmax (somewhere around 1.3 instead of 1.6), colors are OK but not
really as saturated as with 1-3.
This applies to the soft proof, the print preview and the final print.
All of the above four combinations apply to both render intents, perceptual and
relative colorimetric with BPC turned ON.
So this definitely seems to be an issue with Aperture and ArgyllCMS-Profiles
only.
But why? And how can I create a profiles with ArgyllCMS, which also work as
expected/needed with Apple Aperture?
BTW: There is a 30-day trial version of Aperture available as download, if
someone likes to reproduce my findings:
http://www.apple.com/aperture/trial/
Thanks
Andreas Hebeisen
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