[argyllcms] Re: Number of patches - well behaved printer?

  • From: Rishi Sanyal <rishi.j.sanyal@xxxxxxxxx>
  • To: "argyllcms@xxxxxxxxxxxxx" <argyllcms@xxxxxxxxxxxxx>
  • Date: Thu, 24 Feb 2011 15:46:03 -0800

Oh yes; sorry I misunderstood. I already do the former (though if you're making 
a 'camera' profile or DNG profile, the exposure of the target doesn't affect 
the resulting profile too much since, as you mentioned, it's just mapping 
colors. Unless of course you've clipped blacks or whites in the target shot).

I'd like to try the latter. Is there any tutorial or technical thread I could 
read to understand this process better?


On Feb 24, 2011, at 3:18 PM, Iliah Borg <ib@xxxxxxxxxxx> wrote:

> Dear Rishi,
>> "Alternatively, profiles done from targets shot using different exposures 
>> are in wide use; operator just selects the proper proper profile based on 
>> visual."
>> Really? What software packages use this principle? Not Adobe products, or 
>> digiKam, or RPP from what I know... I'm curious!
> I'm sorry but I do not understand what is the issue. One can surely make 
> different profiles for differently exposed target shots; or films scanned 
> (think Vuescan) with different in-scanner exposure settings; than, opening an 
> image, to go through profiles and see which one suits better.
> If you are asking about combining targets - which is a whole different 
> question - than yes, one needs to do some job composing a CGATS file and 
> combining bitmaps for a standard profiler to chew those. But that is 
> relatively straightforward too.
> --
> Iliah Borg
> ib@xxxxxxxxxxx

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