Re: arbitrary profiling targets
Re: arbitrary profiling targets
- Subject: Re: arbitrary profiling targets
- From: Dana Rasmussen <email@hidden>
- Date: Sat, 20 May 2006 09:42:47 -0700
- Thread-topic: arbitrary profiling targets
>> That's how some people build profiles from measurements of over 10,000
>> points, instead of your typical 1000-2000 measurement points.
>
> Have those people ever reported obtaining better results through such
> "extensive" profiling targets, as opposed to using the more popular mundane
> targets like the 928 patches IT8.7/3 or the 1485 patches ECI2002 or some
> proprietary ones (PrintOpen 210 basic target-type, PMP TC35 400 some
> patches, etc)? For well-behaved CMYK devices? I understand RGB output
> devices benefit from such extended sampling techniques for which the name of
> Atkinson immediately comes to mind. But, for what I call well-behaved
> devices like well-maintained or new sheetfed presses, I would tend to think
> that such extensive sampling techniques are a bit of an overkill.
> Personally, I have need any studies in the litterature to this effect.
>
> Regards,
>
> Roger Breton | Laval, Canada | email@hidden
> http://pages.infinit.net/graxx
This is a question I have too. And even in respect to RGB devices.
I would think at some point the software creating the profile is saturated
with data. While I can demonstrate that, at least for a wide gamut RGB
printer, I can build a better profile with a 918 patch, than a 283 patch,
and maybe 3600 is better than 918. Canon is using 69000 patches to create
the profiles for the icf5000. Can the difference be seen?
I would be very curious to hear from someone who actually understands the
math.
--
Dana Rasmussen
Seattle, WA
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