RE: Identical RGBtoCMYK conversions possible on dif. monitors?
RE: Identical RGBtoCMYK conversions possible on dif. monitors?
- Subject: RE: Identical RGBtoCMYK conversions possible on dif. monitors?
- From: Henrik Holmegaard <email@hidden>
- Date: Sun, 3 Jun 2001 08:15:11 +0200
email@hidden wrote:
The question is: Using similar hardware (BARCO's)--with identical
software >color settings--will an RGB to CMYK conversion yield the
identical numerical >CMYK results? I am not concerned about the
display but about the actual file >itself.
I think I may where you are coming from here, or rather I think I
know what you read.
When Pshop 5 came out, Barco sent out recommended RGB Setup instructions.
The Barco recommendation was to set a group of monitors to Simplified
RGB as working space.
The consequence of this is that the measured workstation monitor
profile is turned into the RGB working space.
And the consequence of turning the measured workstation monitor
profile into the RGB working space is twofold,
a. No two measured monitor profiles are ever the same, so no two
workstations will ever use the same RGB working space, and
b. No two RGB working spaces in the workgroup will be the same, so no
two RGB source profiles (: which is what the RGB working space is)
will ever be identical for the same CMYK destination profile,
therefore generating different CMYK conversions on every workstation
in the workgroup.
In defence of Barco's recommendation I would on the other hand say
that with Pshop 5, the illogical behaviour occurred that CMYK and Lab
images in their respective spaces were displayed via the RGB working
space profile into the monitor profile. This meant that to get the
monitor space and the RGB working space to be the same, and also make
sure you could see the whole RGB working space, you could argue for
simplified monitor RGB (or for not using Pshop 5 -:)).
--
Henrik Holmegaard
TechWrite, Denmark