[argyllcms] Re: ColorMunki Photo and Canon Selphy CP-400

  • From: k2mil@xxxxxxxxxxxxxx
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Fri, 20 May 2011 18:33:07 +0200

Hi,
Edmund, can you tell me, what is wrong with native driver?
 
argyllcms@xxxxxxxxxxxxx napisał(a): 
 > i used Monaco amd a DTP 70 several years ago to profile a Selphy 300
 > with a 343 step target on two cards. I think one superwide card might
 > suffice. However in the end i gained little in quality; every change
 > of paper and ribbon really needs rerunning the profile.  if you have
 > thr native driver, forget it, if another dtiver, email me and i will
 > run you a profile on dtp70 or isis provided you add a picture postcard
 > to the target cards :-)
 > 
 > Edmund
 > 
 > edmundronald at gmail dot com
 > 
 > On Friday, May 20, 2011, Nikolay Pokhilchenko <nikolay_po@xxxxxxx> wrote:
 > >
 > > Preliminary profiling helps the targen to take real device response in 
 > > account. Preliminary profile can't limit target gamut, it only shows 
 > > target gamut on real device not the gamut on generic printer. There is no 
 > > aims to limit gamut. There is other aims.
 > > If device response is known, targen able to place test points in whole 
 > > gamut volume more effectively. For example, if device is prone to dark 
 > > tones, without preliminary profile, targen will place the patches 
 > > uniformly in device space. As a result the target will characterize the 
 > > darks better than the lights. In some cases with non-linearized devices 
 > > with dense printing, the result without the preliminary porofile is 
 > > unacceptable. If there is correct preliminary profile, targen places more 
 > > light patches and less dark ones, so resulting target will characterize 
 > > the darks and lights both the best way.
 > > Another aim of preliminary profile is robust chart recognition. The 
 > > predicted colors in ti1 file will be much more exact. Exact colors helps 
 > > the printtarg place the patches on the target while chart generation, 
 > > helps the chertread recognize the patches and the strips while reading. 
 > > The strip reading of the chart may be unreliable or even impossible 
 > > without preliminary profile for non-linearized device.
 > >
 > > Fri, 20 May 2011 11:43:00 +0200 пиŃŃПО ĐžŃ "Stefan - ooge.com" 
 > > <stefan@xxxxxxxx>:
 > >
 > > as far as i understand you limit the color space boundaries and have
 > > more "space" for needed colors.
 > > results in smaller targets with same quality of resulting profile.
 > >
 > > but i haven't big experience with that. may you can try out and share
 > > your results :)
 > >
 > > best,
 > > Stefan
 > >
 > > Am 20.05.2011 10:52, schrieb k2mil@xxxxxxxxxxxxxx:
 > >>> Hi Krzysztof,
 > >>>
 > >>> yes, you can make "pre-conditioning targets".
 > >>
 > >>> http://www.argyllcms.com/doc/targen.html#c
 > >>>
 > >>> best,
 > >>> Stefan
 > >>
 > >> Hi
 > >> Stefan are you sure, that preconditioning is not only limiting color 
 > >> space boundaries known from existing printer profile? Maybe I am wrong, 
 > >> but IMHO it is for avoiding color values out of device color space.
 > >> Krzysztof
 > >>
 > >>
 > >
 > >
 > >
 > 

-- 
Krzysztof Tomczyk
tel. 609187077
 

Other related posts: