With the backlight set to maximum in sRGB mode I measure 322 cd/m2 of brightness with a pure white screen on the UP3214Q. Setting the backlight to minimum results in a reading of 33 cd/m2. I could possibly use a different color preset to get a higher reading, but that usually means tinted whites and a loss of dynamic range, so I prefer to stick to the maximum value you would want in a real world setting.

White Level -  i1Pro and C6

Using the same test setup for black levels, the Dell emits 0.3901 cd/m2 of light with the backlight at maximum and 0.0422 cd/m2 with the backlight at minimum.

Black Level - 1iPro and C6

Combined, we get contrast ratios around 800:1. In comparison to the only other UltraHD display reviewed to this point, the ASUS PQ321Q, the Dell has a slightly higher contrast ratio but a slightly lower maximum light output. I believe the combination on the Dell is better for most people as going past 300 cd/m2 produces an image most people find too bright but everyone can utilize a higher contrast ratio. That said, the contrast ratio difference isn’t huge, as you can see.

Contrast Ratio -  i1Pro and C6

UltraHD displays are still lagging behind QHD displays when it comes to contrast ratio, as those are approaching 1,100:1 now. It isn’t bad, but it’s also an area that hopefully can improve over the next year or two as better panels become available.

UltraHD Today: Still Not There sRGB Test Data
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  • themeinme75 - Wednesday, April 2, 2014 - link

    I see on the apple pro you can buy a 32inch 4k display for 3600.
  • Clorex - Friday, June 6, 2014 - link

    No mention of the IGZO panel and how it differs from IPS?
  • KURGAN999 - Sunday, September 14, 2014 - link

    in case of disabling sleep mode in control panel, am i going to expirience still those problems?

    And if i use this monitor only for work ( i need big desktop area for multitasking ) am i still going to expirience mst issues? Cose i need 60hz for my work.

    Ty

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