Re: monitor control panel
Re: monitor control panel
- Subject: Re: monitor control panel
- From: email@hidden
- Date: Wed, 4 Dec 2002 08:58:30 EST
In a message dated 12/3/02 7:33:39 PM, email@hidden writes:
>
Can somebody explain to me how the monitor control panel changes
>
profiles. I created a profile with Profilemakerpro 4.1 and
>
automatically put it in the control panel where colorsync gets it.
>
The confusing thing is that when I open the monitor control panel and
>
change to another profile the monitor changes but when I change it
>
back to the one I was using it doesn't change back. How do I know
>
that what I have selected is what is being used???
Two seperate things are happening (or not happening!) when you select a
monitor profile. The video card curves from the profile (not really part of
the profile, but conveniently stored inside it, if the software does so, and
if the OS or utility can access them properly) are flashed to the video card;
this is the visual change you see on selecting a profile. If there is no
visual change, then these are absent, or not compatable, or you are on
Windows where this service is not available, or they happen to be identical
to the ones in the other profile... not likely. The second thing that happens
is the profile definintions for gamma, whitepoint, primaries, etc, are made
available to any application that is savvy enough to use them.
This means that clicking on a Photoshop window will now cause a second change
(often more subtle) as these specs are adjusted for screen display of your
images. If you toggle from your monitor profile to sRGB, no flash occurs,
since the sRGB profile does not have any video card curves in it, but a color
adjustment may occur if your monitor's gamma is not 2.2, or its whitepoint is
not 6500, or its primaries are significantly different from the average CRT
primaries in sRGB. If you find a different monitor profile with active video
card corrections, so that a flash occurs on choosing it, then change back to
your custom monitor profile, and no flash occurs when changing back, then I
would suspect your profile lacks video card corrections in a form that the OS
can use.
C. David Tobie
Design Cooperative
email@hidden
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