All measurements are done using CalMAN 5.3 from SpectraCal and a custom workflow. An i1Pro and C6 meters are used to measure accurate colors and low light levels. For all test patterns I use APL 50% when possible to prevent backlight tricks and other things from skewing the results. Full field test patterns are used with the display uniformity testing.

With the backlight set to minimum the LG 34UM95 puts out 55 cd/m2 of light. That is a good number that is low enough to work for any dark environment, but not so low that you can’t use it. The brightness control operates in 1% steps giving you lots of room for adjustment. The maximum light level is 270 cd/m2. This is a bit lower than I would like to see, as direct sunlight will still wash things out, but it is decent. Most people likely will pick a setting in the middle of these and the brightness adjustment makes it easy to get the level you want.

White Level -  i1Pro and C6

Black levels are also very good. The minimum black level achieved is 0.0586 cd/m2 and the maximum level is 0.2724 cd/m2. The 21:9 monitors have been very good so far at getting low black levels and the 34UM95 is no exception.

Black Level - 1iPro and C6

These combine to give us a contrast ratio very close to 1,000:1. As this is now what I consider to be acceptable in a good IPS display, the LG 34UM95 does not disappoint.

Contrast Ratio -  i1Pro and C6

So far, so good for the 34UM95. Let's move on to the color accuracy.

Additional Features and Usability sRGB Test Bench
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  • Sm0kes - Wednesday, June 18, 2014 - link

    Thanks for the review. I've had this on pre-order for a couple of weeks. For someone with both a Mini-ITX gaming PC and a Macbook Air, the inclusion of both DP/HDMI and Thunderbolt is a nice touch.

    Like many, I've been considering the jump to 4K, but it still feel like there's too many compromises given the price. The Asus ROG 27' 1440p display is interesting (despite the TN), but I'm tired of waiting.
  • Azurael - Wednesday, June 18, 2014 - link

    It's a shame it doesn't support running at 1/2 its native resolution when pretending to be two monitors. I frequently watch full screen video in one of my monitors whilst working on the other, which doesn't really work the same on one wide monitor, else it'd be perfect. Oh well, I'm sure somebody will release something that meets my needs eventually. I just hope it happens before much more of the backlight on one of my 2405fpws turns yellow...
  • Gast - Wednesday, June 18, 2014 - link

    Can we get a good picture with this display on a desk with a keyboard & mouse so we can get a good feel for the size? And maybe one with a standard 24" and/or 20" display for comparison?
  • cheinonen - Wednesday, June 18, 2014 - link

    I can try to place it next to a standard 20" 4:3 display and a 27" 16:9 display today or tomorrow. I'll use my wife's desktop since no one needs to see the mess that is my workspace.
  • crazysurfanz - Wednesday, June 18, 2014 - link

    there is such a picture (your first request at least) on the forum thread at ars that mackjam linked earlier:
  • Mark_gb - Wednesday, June 18, 2014 - link

    Just over a month ago, I purchased a 29" AOC ultra-wide 21:9 format monitor. AOC 2963Pm. I've been using monitors on computers since they were experimental (and they were TV's at first). Thats going back to the 1970's. This is my first Ultra-Wide. You will not get me to ever buy another "normal" monitor again. If I had known this one was coming out, I might have waited for it. I have no use for thunderbolt ports and those are expensive add-ons, so they must be going after the Apple market more with this monitor.

    In any case, when I need another monitor, I will be looking for the largest affordable ultra-wide monitor that I can get.

    And please dont call these a niche product. You should hear the oooohs and aaaahs I get when people see my screen. The more that people see these,, the more they will sell. I believe that eventually, most monitors will be ultra-wide.

    Just use one. Then you will know.
  • madmilk - Wednesday, June 18, 2014 - link

    So what benefit does your 29" 2560x1080 21:9 monitor have over a 32" 2560x1600 16:10?
  • fokka - Wednesday, June 18, 2014 - link

    @anandtech: not wanting to step on anyone's toes, but i think the product pictures could use a bit more polish. better lighting could go a long way in this regard. kthxbye!
  • crazysurfanz - Wednesday, June 18, 2014 - link

    I have to politely agree with you on that one, they are not great.
  • cheinonen - Thursday, June 19, 2014 - link

    I wish I had the space for a better picture setup, but I really do not right now. Finding the space to photograph a small device (smartphone, tablet) isn't too hard, but for a 34" monitor it is a challenge.

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