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    For all who miss a correct greyscale on their notebook LCD screens

    Discussion in 'Windows OS and Software' started by NinaMaya, Mar 28, 2008.

  1. NinaMaya

    NinaMaya Notebook Guru

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    Recently I bought a new notebook and had the same problem like I had with the old one: blueish colors where there should be gray and a rather yellowish white.

    But as a multimedia worker I need at least somehow real colors and it is very important that gray really looks gray and not blue.

    Seems like this phenomenom is evident on ALL laptop LCDs, I haven't yet seen one which doesn't show this overly blueish colors.

    By accident, I found a soluition:

    There is a program called "Monitor Calibration Wizard".
    BUT: The actual cool thing about this one is that it uses an input-output matrix for each color channel (Resulting in a file of 768 bytes) and my idea was to create my own profile-file, because just setting gamma-curves woudln't have helped much to get rid of the blue grayscales.

    So I used photoshop and a PHP-script (which I put online) to finally get rid of the problem and now I have true colors and also can do graphic works on my laptop :)

    The script and a little tutorial is here.
     
    NinaMaya, Mar 28, 2008
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  2. Harper2.0

    Harper2.0 Back from the dead?

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    cool thanx for the info
     
    Harper2.0, Mar 28, 2008
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  3. gino_lee

    gino_lee Notebook Evangelist

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    oh. seems nifty!
    will i bother to install my paintshop pro to do this?.. im so lazy...
     
    gino_lee, Mar 28, 2008
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  4. Lithus

    Lithus NBR Janitor

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    I always noticed a reddish tint instead of a blueish one. It was so bad on one of my screens that grays were brown. I always used Adobe Gamma to correct the colors.
     
    Lithus, Mar 28, 2008
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  5. NinaMaya

    NinaMaya Notebook Guru

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    Yes, adobe gamma also seems good. Unfortunately, it's not shipped anymore with CS3.
    There is also "quickgamma" now which might do the job. I will probably try that one, too!

    The reason why I chose such a complicated way is that the color curves are not distributed evenly in my monitors as there is quite a "bump" in the upper part of the blue color channel. Most profile programs up to then only provided gamma curves which were nice to adjust gamma but didn't help with the color problem.

    Here is the curve I needed to get my colors right:
    [​IMG]
     
    NinaMaya, Mar 29, 2008
    #5