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  1. #1
    New ROGer Array Leonidas44's Avatar
    Join Date
    Jun 2017

    Lightbulb PG258Q black uniformity fix

    So guys i want to highlight how important is to calibrate the gamma of your screen , especially on this one!

    In the first pic the screen is at stock "2.2" gamma that is supposed to be calibrated properly from the factory which did not! (Most of the units will not...)
    You will notice that:

    1) The left side of the panel has a yellowish tint
    2) Bottom turns purple
    3) Right bottom corner seems to be brighter than the left with extra purple hue
    4) Some pixelation-banding in dark areas
    5) Washed out colors
    So thats not really good , actually thats an instant rma....

    Click image for larger version. 

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    But after using Color management to actually correct the gamma and truly make it close to 2.2 , the result turns great:

    1) The left side of the panel is no longer yellowish
    2) Bottom no longer purple
    3) Right corner is the same as left in my human eyes (though camera perceived a minor difference)
    4) No pixelation-banding in dark areas
    5) Decent colors for a gaming tn panel
    Now thats a sample worth keeping!

    Click image for larger version. 

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    * Setting the monitor from the osd to 2.4gamma seemed almost right according the color management but still did not provide as good result as CM did.
    ** Both pics taken by the same camera using iso600 and screen set at 15% brightness which is quite bright for this panel.
    *** Please Asus make your workers happier so they can do properly their job.

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