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Asus ProArt PQ279Q Monitor Review: 27-Inch, Wide-Gamut, QHD

Measurement And Calibration Methodology: How We Test

To measure and calibrate monitors, we use an i1Pro spectrophotometer and version 5.1.2 of SpectraCal’s CalMAN software.

For patterns, we employ an AccuPel DVG-5000 video signal generator. This approach removes video cards and drivers from the signal chain, allowing the display to receive true reference patterns. Connections are made via HDMI.

The AccuPel DVG-5000 is capable of generating all types of video signals at any resolution and refresh rate up to 1920x1080 at 60 Hz. It can also display motion patterns to evaluate a monitor's video processing capabilities, with 3D patterns available in every format. This allows us to measure color and grayscale performance, crosstalk, and ghosting in 3D content via the 3D glasses.

The i1Pro is placed at the center of the screen (unless we’re measuring uniformity) and sealed against it to block out any ambient light. The Accupel pattern generator (bottom left) is controlled via USB by CalMAN, which is running on the Dell XPS laptop on the right.

Our version of CalMAN Ultimate allows me to design all of the screens and workflows to best suit the purpose at hand. To that end, we’ve created a display review workflow from scratch. This way, we can be sure and collect all the necessary data with a concise and efficient set of measurements.

The charts show us the RGB levels, gamma response, and Delta E error for every brightness point from zero to 100 percent. The table shows us the raw data for each measurement. And the area in the upper-left tells us luminance, average gamma, Delta E, and contrast ratio. The individual charts can be copied to the Windows clipboard to easily create graphics for our reviews.

Every primary and secondary color is measured at 20, 40, 60, 80, and 100 percent saturation. The color saturation level is simply the distance from the white point on the CIE chart. You can see the targets moving out from white in a straight line. The further a point is from center, the greater the saturation until you hit 100 percent at the edge of the gamut triangle. This shows us the display’s response at a cross-section of color points. Many monitors score well when only the 100 percent saturations are measured. Hitting the targets at the lower saturations is more difficult, and factors into our average Delta E value (which explains why our Delta E values are sometimes higher than those reported by other publications).

  • Sid Jeong
    I think it's gonna be a hit with small studios and many freelance designers. I'd consider it when I upgrade my monitor in the future.
    Reply
  • zentrope
    People who cannot buy Eizo,Nec,Lacie...
    And are not happy with Dell and HP...
    You should be smiling now!
    Also at some places you can even get this around $800..
    Reply
  • slomo4sho
    It appears that my three Asus VS238H-P which cost me $360 total are going have a fairly long life span since 1440P still demands a hefty premium over quality 1080P displays. Hopefully we get some quality 4k displays for around 1k soon, the ASUS PQ321Q needs some competition :)
    Reply
  • amgsoft
    What is the actual reason for calibrating at 200 cd/m2. The usual standard calibration is 120 cd/m2 at 6500K, see http://en.wikipedia.org/wiki/Color_calibration.
    Reply
  • JeanLuc
    The same panel can be found in Korean import models such as the Achieva Shimian QH2700-IPSMS which is roughly half the price. I would love to see Toms benchmark these premium panels against the cheap imports.
    Reply
  • JackNaylorPE
    Almost perfect ....When it comes in 144hz or greater, call me .

    Liking the new Eizo model w/ 240 Hz mode too.
    Reply
  • Stevemeister
    Can someone lend me a tissue I need to wipe up the drool.
    Reply
  • lhughey
    I want a QHD monitor, but I can't afford a gaming card that will work well with that resolution just yet. Maybe in a six months when Nvidia drops its Maxwell cards.
    Reply
  • Nintendo Maniac 64
    Am I the only one that wants to know about upscaling quality? Last time I checked most monitors upscale pretty badly, and considering that this has an HDMI input I don't think it'd be unthinkable to have a 720p or a 1080p external video source.
    Reply
  • Bondfc11
    Why doesn't Tom's do the Overlord Tempest 2560x1440 IPS that will overclock refresh rates up to 120Hz? they are sellign for like $500 now and are killer!
    Reply