Is the LG UltraFine 4K 10 bit?

Discussion in 'Mac Accessories' started by n00bh4x, Nov 24, 2016.

  1. n00bh4x macrumors newbie

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    #1
    I just got my ultrafine 4k hooked up to a 2016 mpb 13 no touch bar. I noticed this row in system information: Pixel Depth: 30-Bit Color (ARGB2101010).

    thought it was a 8 bit monitor.
     
  2. n00bh4x thread starter macrumors newbie

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    #3
  3. glhaynes, Nov 26, 2016
    Last edited: Nov 26, 2016

    glhaynes macrumors member

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    #4
    Interesting. On my MacBook (Retina, 12-inch, Early 2015) the LG UltraFine 4K shows as "32-Bit Color (ARGB8888)".

    Also interesting: at native res or higher, System Information shows it running at 48 Hz; lower resolutions show 60 Hz.
     
  4. Brookzy macrumors 601

    Brookzy

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    #5
    Are you running macOS Sierra?
     
  5. n00bh4x, Nov 26, 2016
    Last edited: Nov 26, 2016

    n00bh4x thread starter macrumors newbie

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    #6
    The first 8 might mean something else and the three 8 after means 8 bit/color. like argb8 888. Its argb2 101010 on my mbp.
     
  6. glhaynes macrumors member

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    #7
    Yes, 10.12.1 (16B2657, i.e. "second edition").
     
  7. Gomusend macrumors newbie

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    #8
    I've been looking into the Ultrafine monitors to go with my yet to arrive mbp. I was settled on the 4K until I saw it was 8 bit with the 5K being 10 bit. Why doesn't Apple put this vital info in the products page? It's a pretty huge difference between the two to not mention it. Especially when they rave on about the P3 colourspace. When you're using colour gamut as a selling point then bit depth is rather vital. Now I'm going to have to splash out for the 5K.
     
  8. n00bh4x thread starter macrumors newbie

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    #9
    I wouldn't trust the product page. On apples swedish page the 5k has millions instead of billions of colors. Maybe the 4k is 10 bit.
     
  9. Outrigger macrumors 68000

    Outrigger

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    #10
    the 4k is not 10 bit, it is 8 bit.
     
  10. n00bh4x thread starter macrumors newbie

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    #11
    Could you explain this from system report then?
    Screen Shot 2016-12-04 at 18.06.07.png
     
  11. Brookzy macrumors 601

    Brookzy

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    #12
    Ohhhh how very interesting.

    For comparison, screenshot from a 5K iMac which definitely supports 10-bit colour. It's the same.

    Screen Shot 2016-12-04 at 17.13.09.png

    Maybe the 4K screen is 10-bit after all?
     
  12. n00bh4x thread starter macrumors newbie

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    #13
    Maybe. Is the 4K iMac 10-bit?
     
  13. Brookzy macrumors 601

    Brookzy

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    #14
    Yep.
     
  14. n00bh4x thread starter macrumors newbie

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    #15
    Then i would be surprised if the LG UltraFine 4K is not 10-bit.
     
  15. Brookzy macrumors 601

    Brookzy

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    #16
    But the tech specs say otherwise:

    Screen Shot 2016-12-04 at 23.03.59.png Screen Shot 2016-12-04 at 23.04.25.png
     
  16. n00bh4x thread starter macrumors newbie

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    #17
    This is what i think. Someone att Apple don't know the difference between million and billion.

    5K iMac. Apple.com product page: millions
    4K iMac. Apple.com product page: millions
    5K LG. Apple.com product page: billions
    5K LG. Apple.se swedish product page: millions
    4K LG. Apple.com product page: millions
     
  17. Outrigger macrumors 68000

    Outrigger

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    #18
  18. n00bh4x thread starter macrumors newbie

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    #19
    Care to explain the difference between pixel depth and color depth?

    I have seen that article. Where did Anandtech get the information? Could it be the millions vs billions from apples product page?
     
  19. mrspooney macrumors newbie

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    #20
    I tried out the 10-bit test ramp from here on my LG 4K UltraFine today, the gradient looked smooth on the MBP screen but displayed banding on the LG, so it appears the MBP screen is 10-bit, but the 4K isn't.
     
  20. sziehr macrumors 6502a

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    #21
    This is kinda disappointing. I was looking to pick one of these up for work to set on my desk to dock. I was hoping it was 10 bit.

    I am still hovering on the 5k since it has so many issues.
     

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