[argyllcms] Re: Saturation
- From: Dimitrije Zivkovic <migraf.keramika@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Sun, 17 Jun 2012 22:21:26 +0200
No
You can chose tables whatever you want.
With COLPROF you have -Z and -T options with a, p, r and s.
Also with COLLINK you can use the same parameters.
I use always perceptual, because we don't use magenta as one of colors, so i
have to use perceptual conversion.
Otherwise I got strange conversion of magenta and violet colors.
The question is:
What should I use when make color profile, and what when make color link
profile?
Dimitrije Zivkovic
On Jun 17, 2012, at 5:58 PM, Nikolay Pokhilchenko wrote:
> If I'm not mistaken, Collink uses only relative tables (A2B with -G and B2A
> with -g parameter). For using with collink You may compute the profile
> without any perceptual or saturation tables. So, with colprof You needn't use
> -S or -s parameters.
> You can define the source gamut only at collink stage.
>
> Sun, 17 Jun 2012 14:28:55 +0200 от Dimitrije Zivkovic
> <migraf.keramika@xxxxxxxxx>:
> Thanks Nikolay
>
> I tested your suggestion and got much better results.
>
> I try collink with -ip -op, than -is -op, and the second looks much better to
> me.
>
> So which procedure should be:
>
> colprof … -SUSWebcoatedSWOP or -SsRGB… ?
>
> Then collink
>
> Regards
>
> Dimitrije Zivkovic
>
> On Jun 16, 2012, at 1:11 PM, Nikolay Pokhilchenko wrote:
>
>> Hi Dimitrije.
>> As soon as You are printing on a ceramic with very small color gamut of the
>> printing process, You shouldn't use general Fogra39>Ceramic perceptual gamut
>> mapping. If the destination space (print on ceramic) have lower gamut than
>> source colorspace, the gamut compression will be take a place. The
>> desaturation will be as higher as the difference between gamuts is.
>> For the best result as source gamut for profiling You should use the gamut
>> of each certain image. You have to building new profile (device link) for
>> each image (or each group of very similar images).
>>
>> 1. tiffgamut
>> 2. collink
>> 3. cctiff
>>
>>
>> Fri, 15 Jun 2012 20:57:45 +0200 от Dimitrije Zivkovic
>> <migraf.keramika@xxxxxxxxx>:
>> Hi everybody
>>
>> It's about printer profile with very desaturated colors, and the point is to
>> get best possible results in conversion to get most saturated colors.
>> I have to work only in perceptual mode because gradation in any other way is
>> rough.
>>
>> For source profile I always use standard USWebCoated or Fogra39 profiles.
>>
>> Which way is better "-qm -bu" or "-qh -b"? Or I have to use some other
>> option in colprof.
>>
>> Thanks in advance
>>
>> Dimitrije Zivkovic
>>
>
>
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