Digital BW, The Print

Steve,

As it relates to the MIS curves, the sRGB space appears to simply compress
the dark tones slightly compared to the Adobe RGB.

Paul
_____________________________
  -----Original Message-----
  From: scrber [mailto:stephen.bate@...]
  Sent: Thursday, September 26, 2002 12:35 AM
  To: DigitalBlackandWhiteThePrint@yahoogroups.com
  Subject: [Digital BW] Re: -MIS VM problem - adobeRGB vs sRGB ?


  A generic colour space question.

  I print colour to a labs lighjet via digital files (colour space /
  profile must be sRBG).

  I print B&W to an Epson 1290 with MIS VM and CIS.  Pauls Curves are
  supposed to be used with an AdobeRBG colour space.

  I am not too hot on the whole colour management schebang yet.  But as
  a lot of my files are colour (convertded to B&W), I wanted to use the
  same profile for all.

  So...Any idea what happens with the PR curves when I use sRBG, or
  vice versa, if I send my digital files to the lab with an Adobe RGB
  profile?

  Any way I can simplify my workflow - as the moment it is a hotchpotch
  of profile mismatches and conversions.

  Thanks

  Steve.


  --- In DigitalBlackandWhiteThePrint@y..., "jim hayes" <jimhayes@j...>
  wrote:
  > For the 2nd conversion from greyscale to RGB to prepare for
  printing:
  > It may be implied, but also make sure that you are not in your
  editing
  >  greyscale space (the greyscale space you use to get your monitor
  to
  > match print, 20%dot gain, more likely a custom dot gain curve,
  etc),
  > and make sure that you are in the appropiate RGB space Paul's calls
  > out for your printer/OS combo. In most cases this is conversion
  from
  > the grayscale space of "gamma 2.2" to either "sRGB" or "Adobe98".
  >
  > But I question if the first conversion from RGB to greyscale would
  not
  > comb out your image data and cause posterization even before you
  had a
  > chance to work on it. Have to be checked anyway. Might be okay if
  you
  > were in 16 bit mode.
  > Jim H.
  >
  >
  >
  >
  > --- In DigitalBlackandWhiteThePrint@y..., "Vincent Orlando"
  > <orlandovl@h...> wrote:
  > > Bob, what I found after many hours is if the scan picks up any
  sort
  > > of color, which it normally does, before printing change to
  > grayscale
  > > and back to rgb and you should be allright
  > >
  > > Vinny
  > >
  > >
  > > --- In DigitalBlackandWhiteThePrint@y..., workmantx@a... wrote:
  > > > Vinny,
  > > >
  > > > Thanks for the information.  I'm going to be shooting and
  working
  > > with some
  > > > chromogenic film shortly (Ilford XP2 super).  I'll scan as RGB
  and
  > > wasn't
  > > > sure exactly how my workflow should progress in PS before
  applying
  > > Paul's
  > > > curves.
  > > >
  > > > Bob


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