Once again we are copying our charts from our Tablet and Smartphone workflow here for monitors. As I mentioned earlier, you can’t compare these to prior results due to the use of dE2000 for numbers. Another key change here is the ability to use meter profiling for doing measurements, which I’ll elaborate on here a bit to put these numbers into context.

There are two main types of meters: colorimeters and spectrometers. Colorimeters are usually cheaper, and use color filters to read the different colors of light. Spectrometers often cost more but actually “read” the light instead of using filters. This difference is key as color filters were very good when the only light sources were CRTs or CCFL lamps, but now with White and Multi-colors LEDs, and OLED displays, we have light with a different spectral makeup than before, which the filters are often not designed around. This can cause a colorimeter to have incorrect readings but a spectrometer will not.

The reason we don’t always use spectrometers is because they are much slower, and they read at low light much worse that a colorimeter. With meter profiling, you use a spectrometer and colorimeter to read colored patches from a display, and then the software analyzes the results. This creates a 3x3 correction matrix for the colorimeter that then allows it to correctly read the light from the display, even if it is LED or OLED based. The key thing here is this now allows us to read shadows better, and do more readings to produce better results.

The main area of difference here is going to be in blues. Compared to 100% White, 100% Blue has only 7% of the light output, making it very dim. This makes it harder to read for a spectrometer, which makes it more prone to error. Now that we can use a profiled colorimeter to make this reading, and in my case use a C6 meter that can average 10 results at a time to produce a more accurate number, our blue numbers may be different than before, but they will be more accurate.

  Pre-Calibration 200 cd/m² Target 80 cd/m² Target
Primary and Secondaries dE2000 2.3002 1.4839 2.0847
Colorchecker dE2000 2.1689 1.0185 0.9915
Saturations dE2000 1.7017 1.0126 1.1254

With that out of the way, we can look at the CIE gamut chart and see that the LG 29EA93 has a bit more than the sRGB gamut available, with reds and greens that extend beyond the CIE triangle. Pre-calibration our numbers look very good, but with a bit of over-saturation in the reds and greens. The 200 cd/m² calibration numbers look better than the 80 cd/m² when it comes to the CIExy chart, but frankly I’m more concerned with the color checker and saturation charts. Most people only focus on the CIE chart, but it really just shows the performance of 6 colors and the size of the gamut, but tells you nothing about the performance of the other 16.7 million colors you might use.

Pre-calibration, the dE2000 number for the Color Checker chart is quite good on the LG 29EA93. Until we have more monitors done with the new workflow we can’t be certain of how good this is, but overall it does look very nice. The main issues are in pure white, and those Yellow-Red-Green tones that fall at the edge of the gamut. The bit of over-saturation that we saw earlier causes these to be a bit too-rich and leads to some visible errors there.

After calibration, only those over-saturated colors provide anything to care about at all. Beyond those four points, the other 20 samples are nearly perfect, with no visible error at all even in blues. If those final four points were perfect there would be nothing to complain about at all with the LG 29EA93, but even with them it produces overall dE2000 numbers that are fantastic.

Pre-calibration, the saturation numbers for the LG are good, but you can see quite a few of the measurements are at or close to the dE2000 3.0 mark. Post-calibration this improves, especially the 20% data, with only the 100% green and yellow color swatches measuring over 3.0, and only four measurements total over a dE2000 of 2.0. The calibrations push the saturation measurements from good to excellent.

Taking these measurements in full, it seems that after calibration, the only place you will see any color errors on the LG 29EA93 is in a fully saturated red, green, or possibly yellow. As soon as the saturation drops below 100% the error level drops drastically, and you won’t be able to see an error at all. Unless you start at a pure-red screen all day long, the color of the LG 29EA93 is going to be very impressive.

Grayscale and Gamma Display Uniformity
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  • davepermen - Tuesday, February 12, 2013 - link

    I would soooo buy that.
  • Soda-88 - Tuesday, February 12, 2013 - link

    You should've make screenshot comparison between 1920x1080 and 2560x1080 in popular competitive games (SC2, CS, LoL, Dota2, etc.) to see if you gain or lose on the viewport.
  • Soda-88 - Tuesday, February 12, 2013 - link

  • DaFox - Tuesday, February 12, 2013 - link

    You should check out the WSGF.

    For example:
    http://www.wsgf.org/dr/dota-2/en DOTA2 is Hor+ and supports AR's wider than 16:9 so you can see more.

    SC2 is Hor+ up to 16:9 but clamped there.
    CS:GO is Hor+ and supports AR's wider than 16:9.
    LoL is Hor+ and supports AR's wider than 16:9.
  • cheinonen - Thursday, February 14, 2013 - link

    I've added a couple screenshots to the Lag and Power Use page. If I can add more before returning it I will.
  • taltamir - Tuesday, February 12, 2013 - link

    How do we differentiate the new awesome monitor from the old crummy one in the story if both have an identical name?
  • cheinonen - Tuesday, February 12, 2013 - link

    That I don't have info on. It never went on sale in the USA I believe, as they wanted the fixes to be done, but the new version started rolling out last month to places where it was already on sale.
  • GiantPandaMan - Sunday, February 17, 2013 - link

    I actually just saw it at Fry's for $699 just tonight. I'm guessing it was the new revision (the shipment was from last month) but $699 is a lot to gamble on. I was still horribly tempted to buy it, but was worried since I don't know how to differentiate between the new and the old revision. There's no one at LG you could bug for the information?
  • cheinonen - Monday, February 18, 2013 - link

    I talked to LG and have more information on this now. You can tell from the packaging if it is the new version or not, but I'll have to update the review with an image showing how today. However, if you buy one that isn't Revision 1.25, you can contact LG support and arrange to send it in to have the firmware upgraded as well.
  • 5150Joker - Saturday, March 23, 2013 - link

    Contact them how? I tried contacting the US customer services branch and they have no idea about these firmware updates. Will you provide readers with such a contact?

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