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Is there a way to simulate a monitor with different phosphor chromacities?
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| I'd like to somehow make my monitor simulate one with different chromacity
phosphors.
So, I'm thinking that if there were some special graphics driver which could
hook in somehow,
and perform channel mixing on the fly, it would be a reasonable
approximation.
Does anything like this exist? This would have to work on a Windows system,
and work at
the system level - not only inside a single application.
Greg.
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| Mike Russell 2004-01-23, 8:28 am |
| Greg wrote:quote:
> I'd like to somehow make my monitor simulate one with different
> chromacity phosphors.
> So, I'm thinking that if there were some special graphics driver
> which could hook in somehow,
> and perform channel mixing on the fly, it would be a reasonable
> approximation.
> Does anything like this exist? This would have to work on a Windows
> system, and work at
> the system level - not only inside a single application.
How about soft proofing, using a monitor profile, with "preserve color
numbers" not checked? That should simulate the gamut of the monitor
reasonably well.
--
Mike Russell
www.curvemeister.com
www.geigy.2y.net
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| "Mike Russell" <REgeigyMOVE@pacbellTHIS.net> wrote in message
news:_Z7Qb.14879$il7.7000@newssvr25.news.prodigy.com...
quote:
> How about soft proofing, using a monitor profile, with "preserve color
> numbers" not checked? That should simulate the gamut of the monitor
> reasonably well.
Thanks, but it has to work at the system level, as I said. I.e, every
application will need to have it's image data remapped before
being sent to the graphics driver. (of course, if there is some way to get
between the graphics driver and the hardware,
that'd be fine too)
Greg.
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| Bart van der Wolf 2004-01-23, 9:28 am |
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"Greg" <nospam@nowhere.com> wrote in message
news:40111264@duster.adelaide.on.net...quote:
> "Mike Russell" <REgeigyMOVE@pacbellTHIS.net> wrote in message
> news:_Z7Qb.14879$il7.7000@newssvr25.news.prodigy.com...
>
>
> Thanks, but it has to work at the system level, as I said. I.e, every
> application will need to have it's image data remapped before
> being sent to the graphics driver. (of course, if there is some way to get
> between the graphics driver and the hardware,
> that'd be fine too)
Does a "Custom RGB" workingspace do what you are looking for?
You can specify that in the Edit|Color Settings dialog under Working Spaces
RGB: .
Bart
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| Mike Russell 2004-01-23, 9:28 am |
| Greg wrote:quote:
> "Mike Russell" <REgeigyMOVE@pacbellTHIS.net> wrote in message
> news:_Z7Qb.14879$il7.7000@newssvr25.news.prodigy.com...
>
>
> Thanks, but it has to work at the system level, as I said. I.e, every
> application will need to have it's image data remapped before
> being sent to the graphics driver. (of course, if there is some way
> to get between the graphics driver and the hardware,
> that'd be fine too)
I'd suggest loading separate LUTs for the three guns That should get you
very close. Photoshop soft proofing could be used to calculate the black
and white points for the three guns.
--
Mike Russell
www.curvemeister.com
www.geigy.2y.net
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| "Mike Russell" <REgeigyMOVE@pacbellTHIS.net> wrote in message
news:Ne9Qb.14891$qG7.4738@newssvr25.news.prodigy.com...quote:
> I'd suggest loading separate LUTs for the three guns That should get you
> very close. Photoshop soft proofing could be used to calculate the black
> and white points for the three guns.
That won't work I don't think. For example, in order to add a bit of green
to the red gun,
the ramp for green would have to be very shallow, essentially making the
green gun useless
for the "substantially green" phosphor. It needs to a much more
sophisticated kind of channel
mixing than that.
Greg.
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| Gernot Hoffmann 2004-01-23, 11:28 am |
| "Mike Russell" <REgeigyMOVE@pacbellTHIS.net> wrote in message news:<_Z7Qb.14879$il7.7000@newssvr25.news.prodigy.com>...quote:
> Greg wrote:
>
> How about soft proofing, using a monitor profile, with "preserve color
> numbers" not checked? That should simulate the gamut of the monitor
> reasonably well.
Mike,
shouldn´t this be (in PhS) "preserve color numbers checked" ?
It means IMO: if the numbers in the file are not changed then
the appearance on the chosen custom monitor is simulated.
Obvious test by working space WideGamutRGB which is in this
context a fictitious custom monitor.
Best regards --Gernot Hoffmann
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| Timo Autiokari 2004-01-23, 11:28 am |
| "Greg" <nospam@nowhere.com> wrote:
quote:
>I'd like to somehow make my monitor simulate one
>with different chromacity phosphors.
In case you could do the matrix conversion on the monitor path you
could correctly simulate only gamuts that are smaller than what the
already small monitor gamut is. So it seems there is not much point in
this.
You can correctly view larger spaces only by having phosphors that
output the larger gamut.
The soft proofing in Photoshop only clips the larger gamuts to the
monitors gamut. In the ColorSettings/Advanced there is an option to
reduce the displayed saturation, this way the image detail of an
larger gamut image can be shows (better) on the small CRT gamut but
the whole image is desaturated.
Timo Autiokari http://www.aim-dtp.net
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| "Timo Autiokari" <timo.autiokari@aim-dtp.net> wrote in message
news:a9e210t3t74rft8dbq0qb2ggdak718u62e@4ax.com...quote:
> "Greg" <nospam@nowhere.com> wrote:
quote:
> In case you could do the matrix conversion on the monitor path you
> could correctly simulate only gamuts that are smaller than what the
> already small monitor gamut is. So it seems there is not much point in
> this.
Yes, I totally agree - the gamut would be smaller. I still want to do the
experiment though. I am not doing this to try and obtain a wider gamut. :)
quote:
>
> You can correctly view larger spaces only by having phosphors that
> output the larger gamut.
Naturally.
Greg.
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| "Bart van der Wolf" <bvdwolf@no.spam> wrote in message
news:40111d97$0$323$e4fe514c@news.xs4all.nl...quote:
> Does a "Custom RGB" workingspace do what you are looking for?
> You can specify that in the Edit|Color Settings dialog under Working
Spacesquote:
> RGB: .
That would only work inside Photoshop. This thing has to work at the system
level, for applications outside Photoshop,
in real time.
Greg.
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