Dealing with viewing brightness

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  • #39315

    stever
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    Have Asus PA287QV & Nvidia Quadro-K2200 on opensuse 15.4. Two Q’s. 1. the OS has gamma adjustment, the K2200 has gamma adjustment and of course so does the monitor. Q, If I lower OS gamma, changing screen brightness, and then profile for 2.2/RGB will that be an acceptable profile? 2. The monitor has six-axis hue and sat adjustments along with a Hue&Sat adjustment. While using the ArgyllPro, spot reads, screen changes can be observed but during a profile DisplayCal doesn’t register/see the changes. Can you point me to any info source to better under their function? Sorry, one last Q. When refining a profile do you still build / reference the last profile with the OS color correction app or do you assign the default monitor profile and then all other referencing in DisplayCal or Argyll is the last profile?

    Tks, Stvr

    #39331

    Vincent
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    In displaycal interactive adjustment popup you measure white… hence those controls have no effect (hue should).
    Since displaycal is a GPU calibration tool and a profiling tool these controsl ahve no use here and you shoule leave them at factory values, then tweak RGB gain/offset and some OSD gamma preset if available (and you’ll have to test that gamma control with console report on uncalibrated display in tools menu waaay before you run calibration).
    Then let displaycal profile display. tahts all.

    If you wish to adjust previosuly native gamut using those 6axis controls better use HFCR nad manual tweak till you get your desired RGB primaries, then back to displayCAL.

    But AFAIK that asus looks srGB display , hence you have little use for thses controls and most users should leave then untouched.

    Regarding nvidia control panel do not even think of useing it, revert al changes, let DIsplayCAL handle GOU gamma adjustments through VCGT.

    #39334

    stever
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    Maybe it was the lack of details, maybe the Linux O/s or your busy … very busy and possibly having a bad day. I have those too. I see a lack of interest because there were no questions and you failed to address all of my mine. I’m sure your a fairly smart individual and maybe mid to late forties. When I was in my forties I was way ahead of the curve. Then in my fifties the know-it-all memory said it was time to specialize. The sixties let me know that real technology had reached a plateau and information collection was the game. Now the late seventies have me content to know that being in the moment is all that matters.

    Let me say that you can lower gamma either at the card or the O/s and still set a white point that DisplayCal  will accept as such. You can take the “gains and offset” once set and run them up and down in sync and still hold the white point and colorimetric measurements, but the curves are something else to behold. You know with the number of monitors, Vcards and standards(ICC) along with opensource projects and commercial products all defining the art of printing … it’s hard to find where to make your stand; and of course my paths are limited by Linux. I won’t own or work on a Mac, and having suffered through MS growth years with their terrible code ( one man’s flaw is anothers feature !)  I can only make do as is allowed. My SpyderX and ColorMunki Design appear a step above the HFCR. I’m into linear space, RGB and Art … sRGB and Web production will continue to get easier … so that everyone can become part of the social collective. Sorry to sound so down but my expectations were a bit crushed by your reply. All is good though Mate, hopefully you were spared any of the last years worth of troubles and nothing that few pints wouldn’t cure 🙂 Thank you for your time and patience and Stay Safe … a parting word … In the space between two heart beats … is your past, your present and your future … in every … two beats. No reply necessary, I’m not looking back.

    Steven

    SpyderX Pro on Amazon  
    Disclosure: As an Amazon Associate I earn from qualifying purchases.

    #39337

    Vincent
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    ChatGPT?

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