All calibration measurements are done using SpectraCal’s CalMAN 5.1.2 software with a custom workflow. Measurements are done using a C6 colorimeter that is first profiled against an i1Pro spectrometer to ensure accurate results. There are two sets of targets we use. Pre-calibration and our first calibration aim for 200 cd/m^2 with an sRGB gamut and a gamma of 2.2. This is a common real-world setting for a display. The final target changes the light level target to 80 cd/m^2 and the gamma curve to the tougher sRGB standard.

The EA294WMi features a number of preset modes. On my sample they all ran a bit warm with the 6500K setting measuring closer to 6100K. Using the 7000K preset gave me a color temperature that was closer to the 6503K ideal value. It still runs a bit warm, at 6413K, but that is very close to 6503K for not being calibrated.

If you look at the charts you’ll see that the color temperature, while having the correct value, is excessively green. There is a large push that grows worse as the intensity increases. This is why just looking at the raw temperature value is really pointless, as you can get to 6503K without having an ideal balance of red, green and blue. Looking at the individual RGB breakdown can show you the actual accuracy of the color temperature.



200 cd/m^2
80 cd/m^2
White Level (cd/m^2) 201.85 198.96 82.427
Black Level (cd/m^2) 0.2024 0.2061 0.0867
Contrast Ratio 997:1 965:1 951:1
Gamma (Average) 2.1847 2.1959 2.493
Color Temperature 6419K 6580K 6476K
Grayscale dE2000 5.9004 0.6941 0.922
Color Checker dE2000 4.1192 1.1519 1.2513
Saturations dE2000 3.6287 1.1265 1.1144

The gamma is good overall and tracks close to the 2.2 target value. It has a little bit of a rise at the top and bottom, but the deviation is fairly small overall. As you see in the Grayscale dE2000 values, the incorrect RGB balance shows up as very visible errors with an average dE2000 that approaches 6.0.

Color accuracy is a bit better than the grayscale. The saturations dE2000 average is 3.6 and the color checker average dE2000 is 4.1. However the more saturated reds are over-saturated which leads to skin tones having a slightly sunburnt look. Blue is a bit under-saturated and cyan has an incorrect tint. These overall numbers are good but issues are still visible on screen.

Post-calibration the 200 cd/m^2 target improves a lot. The gamma tracks perfectly and so does the RGB balance. Our average grayscale dE2000 is an invisible 0.69 after calibration. Colors improve with the tint of cyan being correct now. The EA294WMi lacks the internal LUT of NEC's professional monitors but the performance still improves. The main remaining flaw comes from yellow being over-saturated which pushes it and some orange shades above the visible error limit of 3.0 dE2000. Both the color dE2000 averages are very good in the end.

When we target 80 cd/m^2 and the sRGB gamma curve our results are virtually identical. For these tests I bumped up the number of points that CalMAN samples to the maximum possible and will do this on future reviews as well. We see that the RGB response is very level across all measured values and the gamma tracks almost perfectly. The CIE chart for saturations is harder to make out as there are too many targets, but we see that the color error gets higher as the saturation percentage increases. Yellow and Green are the worse offenders here, as we expected from the CIE charts, while the other colors are all close to 2.0 or below.

Overall the post-calibration performance is impressive. The pre-calibration numbers are not great due to the poor white balance and so for ideal viewing you will want to calibrate it. Other displays offer a better out-of-box experience than the NEC.

Brightness and Contrast Uniformity Testing
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  • DanNeely - Monday, February 10, 2014 - link

    I seem to've missed the 21:9 1440p CES reports; and the only thing I'm finding Googling now is some pre-CES rumors about a 34" Dell monitor. Who else is playing in the 1440p crazy wide segment?
  • REALfreaky - Monday, February 10, 2014 - link
  • DanNeely - Monday, February 10, 2014 - link

    There's no CES 2014 coverage in that link at all and all the reviews are for the existing 2560x1080 panel.
  • marcosears - Thursday, October 9, 2014 - link

    NEC sure is trying, but just can't meet the standards of some of the great monitors that have come out. /Marco from
  • Olaf van der Spek - Monday, February 10, 2014 - link

    > DVI SL

    What's the use of DVI SL on this display? It can't drive 2560 x 1080 can it?

    > CES this year saw the introduction of 21:9 displays with 1440 lines of vertical resolution as opposed to 1080, making it a more direct replacement for 27” displays.

    3360 x 1440? That's nice!
  • JarredWalton - Monday, February 10, 2014 - link

    You can use single-link to drive standard 1080p resolutions (1920x1080), so it's just another input. VGA and HDMI can't handle 2560x1080 either AFAIK (unless it's HDMI 1.4 maybe?) but people still have old devices around that use those.
  • DanNeely - Monday, February 10, 2014 - link

    HDMI 1.4 offers it; but AFAIK monitor support has been a problem because only offering 1.3 on the monitor allows them to use same hardware as DVI instead of having to use a decoder that's clocked 2x as fast.
  • nathanddrews - Monday, February 10, 2014 - link

    VGA delivers 2560x1600@75Hz on my FW900.
  • Death666Angel - Monday, February 10, 2014 - link

    And unless you have something like a Matrox, I bet the picture looks awful. No recent AMD/nVidia card I know of has decent VGA output. And 75Hz is really on the low side for a CRT for me. Below 80 gave me headaches and eye strain in some situations.
  • nathanddrews - Thursday, February 13, 2014 - link

    The PQ is excellent for gaming, however that resolution is slightly less crisp for text near the edges of the screen. I usually just run 1920x1200 since it is uniformly crisp and offers a 96Hz refresh rate, which is great for twitch games and perfect for viewing film content.

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