Does it look normal?

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  • #17095

    rlps
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    Hi,

    I run the calibration several times, gamma 2.2, in a new macbook pro retina screen. I am getting high numbers for blue in the RGB Gray Balance close to 0% and 5%.

    Is it normal?

    Thanks,

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    #17104

    Vincent
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    Instead of checking RGB %, check actual color distance (a* b* axis or dE/dC). They seem to be reasonably good even verified againts a true neutral reference.
    Near black phosphor LED displays tend to show a color close to active emitters (blue led for sRGB-like screens)… but “visual distance” may be small like in your situation.

    Contrast seems to be low but IDNK which panel uses your macbook.
    Also you should use an spectral correction for your colorimeter: WLED for sRGB LED displays or CCFL for older (very old) CCFL laptops with sRGB-like screens.

    #17125

    Florian Höch
    Administrator
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    in a new macbook pro retina screen

    This model (MacBookPro11,1) was released late 2013. It has an IPS panel with white LED backlight, so you can use the correction “Spectral: LCD White LED family (AC, LG, Samsung)”.

    #17213

    rlps
    Participant
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    Thank you very much, guys. I just run another calibration with the correction as indicated. First time, it got weird results, sRGB around 60%. Second time, I deactivated “interactive display adjustment”. I got better results, but not sure if it was because of that. I am attaching the verifications in both cases if you want to take a look at it.

    Two questions:

    How do you know the contrast is low?

    I will also calibrate an Apple Thunderbolt 2 Display 2011-2016 and an AH-IPS AOC i2269vw (https://kr.aoc.com/product_421_I2269VW_monitor_Korea.php). Should I use any correction with those?

    Thanks

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    #17217

    Vincent
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    How do you know the contrast is low?

    It is written in your HTML report, for example (2nd):

    Contrast:   317.6:1

    I will also calibrate an Apple Thunderbolt 2 Display 2011-2016 and an AH-IPS AOC i2269vw (https://kr.aoc.com/product_421_I2269VW_monitor_Korea.php). Should I use any correction with those?

    AOC looks like a normal IPS LED sRGB screen.

    #17290

    rlps
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    Thanks. Which correction should I use for an Apple 2011 Thunderbolt Display: https://en.m.wikipedia.org/wiki/Apple_Thunderbolt_Display

    #17293

    Vincent
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    Thanks. Which correction should I use for an Apple 2011 Thunderbolt Display: https://en.m.wikipedia.org/wiki/Apple_Thunderbolt_Display

    I’m not sure about that. I think that it is a common display: LED sRGB, so use WLEDFamily_07Feb11

    If you want to use community samples instead of generic ones you have some to try here:
    https://colorimetercorrections.displaycal.net/?get&type=ccss&manufacturer_id=APP&display=Color%20LCD&instrument=i1%20DisplayPro%2C%20ColorMunki%20Display%2C%20Spyder4&html=1
    I would not try CCSS with “macbook” in name or “retina” and when plotted (DisplayCAL 3.8, button next to correction combo box), it should look like this (but in black background):

    Like this one:

    https://colorimetercorrections.displaycal.net/hash/4039b49fcf587971ec82ff3501a4a6a3/Apple%20Color%20LCD%20%28X-Rite%20ColorMunki%29.ccss

    This is a typical spectral power distribution of a “WLED sRGB” display: a emitting blue LED and “broad and not spiky” phosphors for red an green.

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