news asus proart pa27ac offers accurate colors and displayhdr 400 support

Asus ProArt PA27AC offers accurate colors and DisplayHDR 400 support

Folks looking for a monitor capable of high-dynamic-range output (HDR) breathed a sigh of relief last month when the Video Electronics Standards Association (VESA) introduced a set of standards for what consumers should expect from a monitor with the HDR label. Asus is one of the first manufacturers to announce a display that's certified under the new spec: the ProArt PA27AC.

Asus orients the ProArt PA27AC toward the needs of graphics professionals. This 27" IPS display has a resolution of 2560 x 1440 and offers true eight-bit color and a color gamut covering 100% of the sRGB space. The monitor's middling 5-ms gray-to-gray response time makes it less interesting for gaming but should satisfy its target audience. The PA27AC supports HDR10 and meets VESA's baseline DisplayHDR 400 standards, so its peak luminance is 400 cd/m² and there's global dimming on tap. When displaying a static scene or image, as when working up a photo, the PA27AC can sustain 320 cd/m² of brightness.

Asus claims that users will find that the PA27AC will provide highly accurate colors, as well. The display is factory-calibrated to a delta-E value of less than 2, and a uniformity-compensation setting in the display's calibration options should mitigate fluctuations in brightness and color. There's also six-axis color adjustment capability.

Like many other recent displays, the PA27AC offers slim "frameless" bezels. The included stand is flexible and offers height, tilt, and swivel adjustments. It also has an understated look with a polished base and a brushed-metal column behind the display. The monitor receives signals through Thunderbolt 3, DisplayPort 1.2, or HDMI 2.0 connectors, and offers USB ports that support power delivery up to 45 W. Asus hasn't indicated the display's pricing or availability yet, but it's likely that we'll learn more at next week's CES event.

0 responses to “Asus ProArt PA27AC offers accurate colors and DisplayHDR 400 support

  1. Actually according to Wikipedia the Rec. 2020 colour space covers 75.8% of the CIE 1931 colour space. The CIE 1931 colour space is intended to define the full range of human colour perception.

  2. [quote<]DisplayHDR 400 is just a normal good quality desktop monitor.[/quote<] I don't think that's really the case. DisplayHDR 400 requires an 8-bit panel, 8-bit image processing, and roughly full-coverage of sRGB. It ain't high-gamut, but it also ain't your "normal good quality" 6-bit IPS $175 UltraSharp, either. OTOH, I found [url=<]this 24" 1440p display[/url<] that would be nice to have as a second display, and might be closer to what you're talking about. 😀

  3. VESA have just added to the mess.

    DisplayHDR 400 is just a normal good quality desktop monitor.

    The other two would be good if there was a decent testing regime but unfortunately the test pattern can be achieved by a very crude backlighting system that won’t achieve anywhere near the stated values in real content.

    It can actually be achieved without any increase in contrast at all if the screen is content to dim the white values, which the spec explicitly says aren’t tested.

    Both of the above behaviours are seen in TVs, so don’t be surprised if they happen here.

  4. HDR is the general name for the technology. Essentially a wider colour range and higher contrast through brighter highlights.

    HDR10, HDR10+, Dolby Vision and HLG are the new versions of the standards for specifying picture data.

    DisplayHDR #### and Ultra HD Premium are specification programs aimed at allowing people to know how much of the new range a display can cover. They’re springing up because the new standards are very ambitious and the technology to reproduce the entire range isn’t close to being available yet. Unfortunately neither of them are very good.

    In terms of another technology we have:

    HDR = Variable Refresh Rate
    HDR10 = DisplayPort Adaptive Sync
    DisplayHDR = Freesync LFC

  5. No display on the planet can achieve full Rec.2020 coverage yet. The best you can get from a high-end TV is ~75% coverage (usually targeting DCI-P3). Some laser-based projectors are geting close now, but unless you own a multiplex then that’s not really an option.

    But if you want to go full-futureproof, just demand ACES for everything. 16-bit floats for linear luminance (so long, gamma curves!), and primaries are placed outside the CIE possible colour gamut to encompass it entirely (so what if you waste some coding values, with 16 bit floats you can afford to, and it’s still more data-efficient than adding primaries).

  6. Hence my edit. A little hand-holding from VESA is probably a good thing here, since everyone’s marketing people have indeed been doing a pretty good job of making a mess out of it so far.

  7. [url<][/url<]

  8. The sRGB aspect of this is pretty bad.

    Rec. 2020 is five years old at this point and is nearly a match to the full spectrum of colors we can see.

    sRGB is a joke by comparison.

    A display with 8bit and sRGB claiming to be HDR10 is just looking to take advantage of uneducated customers.

  9. Yeah, they just announced the new monikers about a month ago? They’re trying to “simplify” buying and classifying the displays. HDR400, 600, 1000 don’t necessarily have anything to do with HDR10 or Dolby Vision though.

    HDR10+ is some Samsung BS that isn’t really a thing or standard. These HDR400-1000 classifications are put out by VESA and have certain requirements that need to be met to garner the tag. There is a link in the post above detailing them a bit more.

  10. Are the 400, 600, and 1000 ratings a new thing? Granted I’m not a “display person” and may have just been unaware, but it seemed like there was HDR first, then there was HDR10, then HDR10+(wait, what?), and now it’s in the hundreds and thousands.

    I just want a display which doesn’t suck guys, seriously.

    Edit: Post-skimming strikes again. I suppose the proliferation of bullet points for these things is nothing new, so just consider this a long-winded version of “get off my lawn”.

  11. I’m fine with HDR600 given how behind PC monitors are now to many TV’s. I agree HDR400 is a pretty low bar, but I don’t see HDR1000 monitors even being viable in this space for at least a year.

  12. HDR1000 or bust.

    Really though, I watch a ton of content on my computer screen. I really do want something HDR1000 + 120Hz+ in the next few years. Even if I have to pay for it, I want it.

    edit: Surprised this only offers sRGB in 2018. So many devices are (mostly) DCI-P3 capable now and IMO people should be creating content for those devices.