RE: Mission impossible
RE: Mission impossible
- Subject: RE: Mission impossible
- From: Roger Breton <email@hidden>
- Date: Sun, 30 Jan 2011 20:54:49 -0500
Florian,
I really like your reply. Marc did a great job too. I have both to thank.
BTW, your dispcalGUI is a little wonder of a graphic interface on top of
Argyll's dispcal monitor calibration + profiling solution.
/ Roger
-----Original Message-----
From: colorsync-users-bounces+graxx=email@hidden
[mailto:colorsync-users-bounces+graxx=email@hidden] On
Behalf Of Florian Höch
Sent: January-30-11 7:45 PM
To: email@hidden
Subject: Re: Mission impossible
Hi,
Am 29.01.2011 21:28, schrieb Marc Levine:
> Hi Roger, I believe the problem is that it's not Photoshop's duty to
> send color from the PCS to the display. It's the OS that does that.
Atleast on Windows, where there is no desktop-wide colormanagement being
applied by the OS itself, it must be completely up to the individual
applications to send color corrected RGB values to the display (they can of
course invoke functionality provided by the OS to do so - which Photoshop
does not afaik when it uses ACE - but even in that case, the OS is only
indirectly involved). So, Photoshop queries Windows for the display profile,
and if using ACE, I think that's it for the involvement of the OS. The color
transform is handled by Photoshop.
> You can dictate which colors Photoshop sends to the PCS by switching
> either the workspace or the assigned profile. You can even ask
> Photoshop to "dial back" the colors by reducing the "monitor
> saturation".
Getting the correct output in Photoshop on a system which does not allow
changing the display profile could be done by:
1) Opening an image with embedded profile
2) Convert that image manually to the (correct) display profile
3) Assign the (uncorrect) display profile set on OS level (e.g. if the
display profile on OS level is set to sRGB, assign sRBG), so that Photoshop
should do a null transform
> However, once those color values get to the PCS, Photoshop says
> good-bye.
See above.
Kind regards
--
Florian Höch
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