How does the new HP Dreamcolor Z27x support 4k but is not a 4k monitor

Discussion in 'Mac Accessories' started by rjbenson83, Apr 7, 2014.

  1. rjbenson83 macrumors regular

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    Atlanta
    #1
  2. Peace macrumors Core

    Peace

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    #2
    The only thing I can think of is 4k over the HDMI port.

    Other than that the specs don't mention 4k resolution.
     
  3. rjbenson83 thread starter macrumors regular

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    #3
    http://h10010.www1.hp.com/wwpc/pscmisc/vac/us/product_pdfs/HP_DreamColor_Z27x_Datasheet.pdf

    this spec sheet says it "supports" 4k resolution. I've never heard this in any marketing materials for a non 4K native resolution monitor.

    ----------

    found it:

    The DreamColor Z27x ($1499) features 10-bit color and a 2560 by 1440 resolution anti-glare screen. It can accept 4K input, which it displays either scaled to fit the screen or natively, allowing you to scroll around the larger image.

    Not sure how this is different from any other monitor though.
     
  4. Greg Staten macrumors newbie

    Joined:
    Aug 25, 2009
    #4
    Just now back from NAB with a chance to check the forums...

    The HP DreamColor Z27 actually has some specialized ways to display 3840x2160 or 4096x2160 sources. (Most monitors cannot display these signals - indeed very very few monitors are even designed to accept input signals of a higher resolution than the monitor panel's native resolution.)

    The Z27x can display 4K either scaled to fit the entire display or you can use two different methods to show the larger image pixel-for-pixel. The first lets you hop from corner to corner (and the center) of the 4K image. But the second one is even cooler. It allows you to dynamically scroll around the 4K image. A pop-up window appears in the lower right corner showing you the entire 4K image and a box which indicates which region you are looking at in real time. Using the bezel buttons you can scroll around the image in real-time.

    4K input is accepted over either DisplayPort or HDMI. I've tested both coming out of a MacBook Pro and MacPro and they work well. The only frustrating thing is that the formats are not listed in the resolutions list in the Displays control panel. We are investigating this with Apple.

    Note that the scaling algorithm that is used in the display to show 4K scaled to fit is highly customized for 4K down scale and produces a pretty gorgeous image. Indeed, many of the beta sites reported that from about three feet away they couldn't tell the difference between the scaled output of the Z27x and a true 4K display.

    -greg
     
  5. rjbenson83 thread starter macrumors regular

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    #5
    Thanks greg, very good info. Any idea when Apple will support 10-bit color ( if they haven't done so already?)
     
  6. binba macrumors newbie

    Joined:
    Jul 23, 2010
    #6
    Really? You guys are making a big deal over something fairly obvious... at least in the video monitor market. All the hundreds of (old, cheap) EDTV "HD-ready" and 720p LCDs and plasma could take 1080i video, they simply downscaled it to the panel's native resolution. I also work on film sets and virtually any small LCD video monitor that you'd see around the camera receives a 1080p signal but the panels are 480p or 720p.

    That said, HP did phrase it in a rather confusing manner. Obviously they're trying people to think about it as a 4K monitor even though it's not. It sounds like it would be a good compromise for 4K video work. I'd sure prefer a Sony Trimaster, Canon or Dolby, but they're a meager $40,000 :)
     

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