HP Z27q 27-inch 5K Professional Monitor Review

Viewing Angles, Uniformity, Response And Lag

To learn how we measure screen uniformity, please click here.

The Z27q's off-axis performance is typical of modern IPS panels. Viewing the image at 45 degrees to the side results in a moderate light falloff and a slight color shift to green and red. The same is true when viewed from the top down. Detail is well-preserved even in the darkest steps so image integrity should be acceptable to viewers not sitting in the center seat.

Screen Uniformity: Luminance

In the ANSI contrast test we noted two hotspots in the upper-left and lower-right corners. Those same areas affect the Z27q's black field uniformity. 13.77 percent isn't a bad result but other screens score better. In practice it doesn't qualify as true light bleed but in a dark environment you can just make out the extra brightness in those two corners.

Here's the white field measurement.

The white field result is considerably better with no visible issues whatsoever. In fact, once the field patterns exceed 10 percent those hotspots we mentioned become completely invisible. The Z27q doesn't include any uniformity compensation but we'd say given the performance of our sample, it's not needed.

Screen Uniformity: Color

Color uniformity is equally competent and exhibits no visible tinting anywhere on the screen. Smooth tones are all you'll see at every brightness level including the 80 percent mark we test at.

Pixel Response And Input Lag

Please click here to read up on our pixel response and input lag testing procedures.

Panel response is quicker than we'd expect given the high pixel count. We don't expect to see much gaming on this monitor at its native resolution, but full-motion video exhibits far less motion blur than many other displays.

Here are the lag results.

Input lag is also quite impressive. We credit some of that to the AMD FirePro graphics card but this is a pretty snappy panel considering how much processing is going on. It's one of the faster IPS screens we've tested at any resolution.

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  • Xajel
    So, how long till we will see a 21:9 version of these... the 21:9 version will be good, as it will you give you the 21:9 ratio and still be able to view a full 4K resolution in the same time, as 21:9 version will have 2160 vertical resolution with 5K width... final res is 5120x2160
  • fmyhr
    No measurement of power consumption? Did you lose your Kill-A-Watt?
  • Tanquen
    Rent is too damn high!

    27" is too damn small! (So is anything under 34" for 4 and 5k screens.)
  • thor220
    Quote:
    No measurement of power consumption? Did you lose your Kill-A-Watt?


    This is a professional monitor and one of the few 5k screens on the market. Power consumption does not matter.
  • utroz
    You would need a microscope to see the pixels on this bad boy!!
  • 10tacle
    Ping me when this resolution is available in 32"...and there are GPUs powerful enough to run games at that resolution since even SLI 980Tis get taken to their knees in 4K in games like Witcher 3.
  • Bghead8che
    Too bad regarding the Adobe RGB test. Otherwise a pretty decent monitor, especially for the price. You wonder if the Adobe RGB issue is specific to the exact monitor they tested or it affects all HP Z27q models?
  • Larry Litmanen
    Quote:
    Ping me when this resolution is available in 32"...and there are GPUs powerful enough to run games at that resolution since even SLI 980Tis get taken to their knees in 4K in games like Witcher 3.


    I have a 34 inch Dell Monitor, 21:9,, rather than wait until the GPUs will become powerful enough i simply temporarily switched to playing AAA games on the XBox One. So i have the monitor for general PC activity and play Xbox on it as well.

    Realistically it is simply too much to drop all that money on the monitor and a GPU, of the two i think GPU can wait.
  • Karsten75
    You say "... it will send a true 10-bit signal to the display."

    That is one of my perennial questions. How to verify that when looking at a monitor's specifications. Can you provide any guidance in that area? I lnow that 10-bit (or 8-bit) is important for the entire path of image production, but I do not always know how to ensure that.
  • none12345
    The more 200ppi screens the merrier. As far as processing power for games...ya we arent there yet, but we should have gpus later this year that will be fine on that res. I wouldnt touch this screen tho because its only 60hz. Not touching 4k till there are a bunch of 120hz monitors out. All thought id really like an OLED screen next, id really like to see 10bit per channel 120hz OLED become average for monitors.
  • f-14
    @ 60Hz
    no thanks florescent lighting flicker gives most every one a headache after 5 minutes to 3 hours some lucky few who can make it to 3 hours.
    make it 75hz and ease the eye strain and flicker headache problem 85hz i have found i can work with for 12 hours at a time. i still have to take long breaks with a 75hz after 3-5 hours tho.

    60hz is enough only for robots. you ever wonder why you get headaches look at these screens on a video broadcast.... not only is the flicker prominent to the point even a moron can't ignore it, but you can also see the vertical scan lines
  • weilin
    Can Toms do a review of the Dell UP3216q?
  • spagalicious
    Quote:
    @ 60Hz no thanks florescent lighting flicker gives most every one a headache after 5 minutes to 3 hours some lucky few who can make it to 3 hours. make it 75hz and ease the eye strain


    60Hz produces no eye strain and scan lines are definitely not visible. Modern LCDs use LED backlighting. PWM dimming can cause eye discomfort for some, but not all. There is no tech available to run 5K@60Hz+.
  • picture_perfect
    pfft...5120x2880. Not even 8K. You kids get off my lawn!
  • BIG_PWR
    @10tacle, just to comment on your post, I have xfire R9-290's and Witcher 3, plays fine at 4K, 60Hz, never dipping below 35 fps. It's not perfect but still very enjoyable. Just thought I'd throw my 2cents.