On Friday 09 June 2006 09:11, Marti wrote:
> Hi Armindo,
>
> Definitively, the display profile should NOT be taken
into account. I don't
> know if anybody is doing that, but would be a very bad
idea. Ok, good match
> to screen may be a goal for the big boys, but, at least
for the iniciatives
> I've been involved, that is performed by defining
suitable viewing
> conditions and a setup for the reference monitor, not
taking each
> workstation monitor profile into account. Many large
format printers are
> developed with network printing in mind, doing this
hack would go against
> any color consistency and therefore be contra-producent
for the bussiness.
> 
>
> I would bet instead for mixed output profile/intents
used in each driver,
> and maybe double color management. Give a try to the
probe profile, I
> assure you it would be worth of spent time.
>
> Regarding the tool to list used profiles, nothing like
that on windows
> AFAIK. Also, many applications do color management on
their own,
> completely bypassing ICM. A RIP would be the ultimate
solution if
> everything else fails, but those are not cheap...
>
> Regards
> Marti.
>
>
> ----- Original Message -----
> From: Armindo
> To: Marti ; lcms-user lists.sourceforge.net
> Sent: Thursday, June 08, 2006 5:11 PM
> Subject: Re: [Lcms-user] Problem with Printer on
Network
>
>
> Hi Marti,
>
> Nice to ear you.
>
> The problem may come from photoshop or the Dosplay
profile.
> Someone told me that to have a very close color
between Display and print
> outputs, some printer manufacturer take in acount the
display profile. Also
> this customer has photoshop on every PC and each PC has
different
> monitors... Do you know what doesn photoshop do if you
want to adjust the
> display settings (inside adobe product) ?
>
> Is there a tool that can list all the profiles used
by a PC (monitor,
> scanner, and each prodile used by each printer) ?
>
> thanks
>
> Armindo
On Windows there is a new Color Control Panel applet from
Microsoft that
allows users to specify what profiles are to be used with
each device. One
of the nice features is that this allows users to specify
profiles for each
monitor in multi-monitor setups. Something that you can
not do without the
applet with most video drivers. In addition the applet will
handle VCGT
loading so if your profiles have VCGT tag data you no longer
need a separate
gamma loader program. This applet can be downloaded from
Microsoft. This
appears to be a backport to XP/2000 from Vista. I have
been using this on
Windows for about two months now to manage my display
profiles and it is a
big improvement over what was available before. But I use
Windows so little
that I don't know how well it works for other devices like
printers and
scanners and I suspect that this is highly dependent on the
printer and twain
drivers. I also believe that anyone who wants to do color
management on
Windows should have this installed.
>
>
>
> Hi Armindo, nice to talk with you again
>
> >When I print some color patches on it from 5
> > different PCs, with EXACTLY the
> >same settings and same color profile,
> >I see some color difference on the printed
results
>
> Ah, workflow problems. I strongly believe this
> is *the* real issue on today's color management.
> Double-color management, inconsistent paths,
> different profiles... a nightmare.
>
> Ok, I cannot spot where the problem is, but here
> are some clues. Thay have been very useful to
> me in past.
>
> 1) Trust nothing. Check each driver, profile, etc.
Even
> if the filename and UI look is same, maybe the
> profile and driver are different.
>
> 2) pinpoint the path. This technique is very
effective
> when one tries to find which profile/intent is
being applied.
>
> ICC gives a "probe profile" here:
>
> http://www.col
or.org/probeprofile.html
>
> This is a fake profile that adds a huge tint,
which is of
> different color on depending on intent being used.
> So, just replace the output profile with this one
and do
> some prints. If the workflow is configured
correctly, every
> print should come with same tint color. I guess you
will
> be surprised by results.
>
>
> 3) Isolate wrong branches. If you have a
> colorimeter/spectrophotometer, print some patches
and
> measure them. Isolate the parts of the network that
produces
> bad results. If the workflow is complex enough,
maybe is not
> worth of understanding each step. Remember, you
want good
> results. A proper setup would be nice, but you
final goal are
> good results.
>
>
> Hope this helps
>
> Cheers,
> Marti.
>
>
> ----- Original Message -----
> From: Armindo
> To: lcms-userlists.sourceforge.net
> Sent: Tuesday, June 06, 2006 2:00 PM
> Subject: [Lcms-user] Problem with Printer on
Network
>
>
> Hello,
>
> I don't know if somebody has already had this
problem.
>
> I use a Canon IP4200 printer shared on a Network.
> When I print some color patches on it from 5
different PCs, with
> EXACTLY the same settings and same color profile, I see
some color
> difference on the printed results. Any idea of how to
solve this ? All the
> PC run on Win2K with same driver version.
>
> Thanks
>
> Armindo
>
>
>
>
>
>
>
>
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>
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