Message
Re: [colorvision_group] Re: Quad monitors. Getting there!
2007-11-28 by CDTobie@aol.com
In a message dated 11/28/07 10:04:15 AM, rlphoto@... writes:
Wow, good thing I did not open my new video cards yet. I was planning
to load XP on the new machine. they are nvidias.
Problem though, the reason I bought nvidias is that in the vid card
control panel in the driver color control there is curves adjustment.
In the nvidia driver the curves control allows you to move the shadow
and highlight ends of each channel curve independently. The ATI does not.
Videocard utility adjustements are to be avoided if you are hardware calibrating your display. At worst, the two are separate modes: either the video card utilitys adjust the LUTs, or the ICC profile data does. At best, you are adjusting a seperate LUT table in the Videocard software first, and a custom profile set on top of them, which can still be less than ideal. The best practices for using ICC profiles is to not install, or at least not invoke, the videocard utility at all.
For some strange reason I am getting strong yellow in the shadows on 2
different projectors which I can remove successfully with that curves
adjustment with out screwing up the highlights with the nvidia. If the
calibration works this might not be a problem anymore but if
calibration dosent I can always resort to it.
Maybe I should upgrade to Vista?
That may solve some problems, but appears to produce others, so choose carefully. The only clearcut "upgrade" would be to a Mac, which is probably not an option...
C. David Tobie
Product Technology Manager
Digital Imaging & Home Theater
Datacolor
CDTobie@...
www.datacolor.com/Spyder3
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