HDR Color And Luminance

New to our monitor workflow, we've utilized some of CalMAN's recent HDR Analysis workflow additions, again in the SpectraCal suite. As I don't have an HDR test pattern generator currently, we've utilized madTPG for the HDR pattern generator. To note, in SDR mode the monitor reports a "SDR-BT1886" EOTF (gamma) instead of "SDR-sRGB" when in YCbCr mode, but in HDR mode the EOTF is "HDR-ST2084".

Checking back on HDR brightness, we see that the peak brightness is around 1236 nits, reached when a 10% area of the screen was white. So there's definitely room to spare with respect to the 1000 nit minimum requirement.


SpectraCal CalMAN

The HDR gamut coverage matches what we saw with the SDR 'wide gamut' mode, confirming that it covers around 76% BT.2020 and 92% DCI-P3.


SpectraCal CalMAN

Originally in delta ICtCp format, which reportedly describes HDR more accurately, the metrics are in delta E for ease of comparison. The HDR10 media profile targets the BT.2020 space, so it's important to see how well devices designed for the more limited P3 gamut do inside this subset. In that respect the PG27UQ is able to do quite well, with dE's below 3 on color saturation sweeps.


SpectraCal CalMAN

As for chroma subsampling, the 4:2:2 mode kicks into effect when in HDR mode at 120Hz or above. The lack of full horizontal color data can be noticed in certain cases, such as colored text on colored backgrounds where font can become blurry.


4:2:2 (top) and 4:4:4 (bottom) as seen on 12 point font

SDR Color Modes: sRGB and Wide Gamut HDR Gaming Impressions
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  • lilkwarrior - Monday, October 8, 2018 - link

    SLI & Crossfire are succeeded by DX12's & Vulkan's explicit multi-GPU mode. Nvidia deleiberately even ported NVLINK (succeeds classic SLI) to RTX cards from Quadro+ cards but without memory pooling because DX12 & Vulkan already provides that for GPUs.

    Devs have to use DX12 or Vulkan and support such features that is easier for them to consider now that Windows 8 mainstream support is over + ray-tracing that's available only on DX12 & Vulkan.
  • nathanddrews - Wednesday, October 3, 2018 - link

    Still cheaper than my Sony FW-900 CRT was when it was brand new! LOL
  • Hixbot - Wednesday, October 3, 2018 - link

    Still not better than a fw-900 in many ways. This LCD doesn't have a strobing feature to reduce eye tracking motion blur.
  • nathanddrews - Wednesday, October 3, 2018 - link

    No argument there, but my FW900 died, so the options are few...
  • Crazyeyeskillah - Wednesday, October 3, 2018 - link

    my fw-900 is also dead in my closet, hoping of resurrecting it one day. Right now I got another excellent crt monitor I found to game on: Sony Multiscan E540 : It's not as big, but god damn is it smooth and flawless.

    By the time this crt dies, hopefully LCD tech won't be such garbage trying to make workaround for its inferior tech for gaming.
  • nathanddrews - Thursday, October 4, 2018 - link

    Yeah, I've moved on to a Sony C520K for the last ~2 years. In use I think it's far better than my FW900 was in terms of contrast/color plus I'm able to push slightly higher refresh rates, but it's not widescreen. I have bought a couple expensive G-Sync displays, hoping for an adequate replacement, but ended up returning them. I'm really hoping that this CRT lasts until MicroLED hits the market and that mLED can truly combine the best attributes of LCD and OLED without any of the drawbacks.
  • Ironchef3500 - Wednesday, October 3, 2018 - link

    100%
  • Tunnah - Tuesday, October 2, 2018 - link

    I don't get the point. You don't need the features for desktop work, so this is purely a gaming feature. Why not get an equally capable OLED/QLED at a much bigger size for less money ?
  • Inteli - Tuesday, October 2, 2018 - link

    TVs don't support native high refresh rates from sources like monitors do (I think LG's does, but only from USB sources or something like that) or adaptive refresh rates. It's a gaming monitor, so it has gaming-specific features.
  • imaheadcase - Tuesday, October 2, 2018 - link

    You answered own question, because its a gaming monitor. You can't find one like this (yet) that offers all the things it does.

    You like many people are confused on this website about TV vs monitors. A TV equal size, same resolution, is not the same as a dedicated monitor. A LG OLED 55 inch TV looks pretty bland when you use a PC monitor for gaming.

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