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Re: filmscanners: SS4000>Vuescan>Grafics Program




----- Original Message -----
From: "Oostrom, Jerry" <Jerry.Oostrom@Alcatel.nl>
To: <filmscanners@halftone.co.uk>
Sent: Monday, February 12, 2001 6:09 AM
Subject: RE: filmscanners: SS4000>Vuescan>Grafics Program


>
>
> > -----Original Message-----
> > From: shAf [SMTP:michael@shaffer.net]
> > Sent: Monday, February 12, 2001 7:42 AM
> > To: filmscanners@halftone.co.uk
> > Subject: Re: filmscanners: SS4000>Vuescan>Grafics Program
> >
> > Robert writes ...
> >
> > > Why do you worry? The raw file has no been color adjusted.
> >
> > The difference beween sRGB and Adobe RGB (or any other
> > > work space) is not an image mode change, it is a profile,
> > > a definition.  Data is not lost.
> >
> >     It would depend on how "Picture window" handles the image data and
> > defines sRGB.  If it held to the principles of CM and the use of
> > profiles, then it would "change the data" to put the image in sRGB.
> > But that principle assumes it was in one color space to begin with
> > (scanner color space), and was converted (changed) to sRGB.  On the
> > other hand, Picture Window may have simply assumed sRGB ... assigned
> > the profile without changing the data.  Do you know how PW works??
> >
> [Oostrom, Jerry]  With the Pro version that facilitates CM:
> * You can specify a scanner profile for TWAIN input,
> * you can specify an assumed profile for input of a file without
> profile,
> * you can specify your working space,
> * printer profile and
> * monitor profile.
> * You can specify the conversions and the display to "preserve the
> depth" (I don't remember the term PW uses).
> * you can download a 30-day trial version to look for yourself if it
> adheres to all principles of CM. It seems to me it does, but I am
everything
> but an expert on this subject.
> The conversions do take a few seconds, therefore I assume that they
> alter the 'triads', or color values and are in the view of some 'image
mode'
> changes.
> Note that it is useful to regularly visit the site as the software
> has been patched a few times in the latest weeks, some of the patches had
to
> do with color space conversions (i.e. conversion to sRGB for creation of
> slideshows).
>
> B.T.W. Are there any real disadvantages for the web if you convert
> your input tiff with embedded color space to an sRGB .jpg slide and leave
> out the sRGB definition for size reduction purposes? I ask because that is
> the solution currently (to be) implemented with the newest patch of
PWPro3.0
> (patch d). To me it looks OK, but how will it look to others on the web?



My original post stated that Picture Window Color Management was disabled. I
ask what PS shop does on like circumstances.
shAf's reply answered the question.
                                                        John Horton




 




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