Calibration and Results

Of course, once we use ColorEyes Display Pro to calibrate the AOC, we would expect even better results than we got out of the box. As usual, we set a white point target of D65, a gamma of 2.2, minimum black level, and a white level of 200 nits. I then checked the quality of the calibration using the Gretag Macbeth color checker chart. Often you will see display reviews that use the calibration target points to see the quality of the calibration. That gives you a good indicator of how well the software and hardware was able to hit those targets, but unfortunately no idea if only those targets improved, or if other colors were improved as well. Using the Gretag Macbeth swatches, which are designed to mimic common colors in the real world, gives you a better idea of the overall quality of the calibration instead of the quality of those specific targets.

Color Tracking -  XR Pro, Xrite i1D2 and XR i1DPro

Here we see that the AOC calibrated down to an average dE of 1.64, which is pretty common. When I looked at the results some more, I got a little curious and also decided to see what the median color error was for all the displays. The Gretag Macbeth color checker includes some shades of blue that are at the very edge of the sRGB colorspace, or totally out of it in the case of one sample. In these cases if the display can’t reproduce those shades, the average dE for it might be thrown way off, but the median dE could still be very low since it does a very good job with the colors it can reproduce.

Color Tracking -  XR Pro, Xrite i1D2 and XR i1DPro

Looking at the results, we can see that the AOC has a much lower median dE than some monitors that produce a lower average dE. When we get to the color gamut data later in the review, we will see that the AOC has a smaller than average gamut, which is leading it to have larger than average errors for color samples on the edge of the sRGB colorspace. In effect, the conclusion we can pull from this is that the AOC can’t produce as many colors as other reviewed displays, but for those that it can produce it does so more accurately. Results like this are why you can’t just look at a lower dE and assume that a display will automatically be better than another display with a higher dE, as it’s just a single number that only tells part of the story.

For people that might use the AOC for press work, or prefer a dimmer display in a dark room like myself, I also calibrated the display to 100 nits of brightness and then took another set of readings.

Color Tracking -  XR Pro, Xrite i1D2 and XR i1DPro

The numbers for 100 nits are almost identical to those for 200 nits. The grayscale is good, and the large errors are all contained in shades of blue, as we would expect.

OSD and Initial Readings Uniformity and Contrast
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  • Sabresiberian - Monday, January 30, 2012 - link

    Yah one of my screens is a 27" 16:9, and I'd say from that experience I'd hate to have a smaller screen with that format. I bought the screen in part to see if 16:9 would bug me, and it does. Unfortunately, 16:10 in that size screen would mean going to 30", and the pixel pitch is significantly larger in current 2560x1600 displays than screens like mine that are 2560x1440.

    There are still 16:10 screens around (of course all 30" screens, that I'm aware of, are 16:10), and even new ones have come out; the format is far from dead. Generally though they are more expensive. I think the price increase is well worth it, and if people would stop buying cheaper 16:9 screens, then maybe the manufacturers would pay more attention to 16:10.

    Laptop screens are the worst, these days. 16:9 is in my opinion, atrocious on them, and part of the reason I want 17" on a laptop is because of that format.

  • cheinonen - Monday, January 30, 2012 - link

    This comes up every review, but I feel the need to comment regardless. 16:10 panels will still exist, but they're going to continue to be a niche market. With 16:9 LCD panels, that enables manufacturers to use them for computers, laptops, and TVs. This leads to larger yields, lower prices, and cheaper panels for everyone. I also prefer 16:10 instead of 16:9, but that 16:10 panel can often cost twice as much as the 16:9 and makes the value proposition of it much lower for most people. For my laptop (Macbook Air, 16x9 ratio) I've wound up moving the dock to the side of the screen to save vertical space, and if I had a Windows machine with a 16x9 ratio I would probably do the same.

    I like 16:10 but I also realize that most people I know would rather pay half as much for a 16:9 screen, or buy two, than have that extra bit of screen at the bottom, and due to the manufacturing economics, I don't expect this to change soon.
  • Firebat5 - Wednesday, February 1, 2012 - link

    I agree with cheinonen....
    I've ended moving the dock to the left side on my Windows 7 machine. It just makes better sense for me with the 16:9 screens.
  • poohbear - Monday, January 30, 2012 - link

    I saw a samsung LED TN panel the other week, and the color reproduction looked phenomenal! is IPS irrelevent these days with OLED just around the corner? If they have'nt picked up by now, i imagine OLED will completely make them obsolete.
  • cheinonen - Monday, January 30, 2012 - link

    OLED is likely coming out later this year for home theater displays, but since that will be around $8,000 for a 55" display, affordable desktop displays are not going to be coming anytime soon. Perhaps in half a decade we will see them, but for the moment it's a technology with low yields, but very high performance, that will mostly be sold as a high margin home theater device I imagine. There is a lot that can still be done to improve desktop LCDs before OLED comes (such as backlit LEDs instead of edge lit, and RGB LEDs like the HP DreamColor display to provide true 30-bit color displays instead of 24-bit), and OLED might start to put pressure on vendors that can't produce it (only Samsung and LG at the moment can make OLED sets) that will need to keep up.

    IPS certainly isn't dead just because of TN with LED backlights. You still have the issues of TN (worse color fidelity, poor viewing angles), though the new 120Hz TN displays are very nice for gaming. With eIPS closing the price gap, it wouldn't surprise me if eIPS takes over the budget, general purpose display area and 120Hz TN takes over for gaming.
  • Sabresiberian - Monday, January 30, 2012 - link

    Tomshardware did a test of several TN panels in this price range (under $200) and the conclusion was - yuck.

    I doubt there's any under-$200 TN screen that comes anywhere near close to the quality of this thing.

  • holotech - Monday, January 30, 2012 - link

    Your Input Lag numbers looks funny.

    check out the Dell U2312HM 0.6ms average lag..

    I rather get my Monitor reviews from there. no offense. For most things your the best!
  • cheinonen - Monday, January 30, 2012 - link

    Is there another aspect besides the lag numbers that you would like to see improved? We haven't reviewed the Dell U2312HM that you linked to, so comparing any of our lag numbers to those would be an invalid comparison. We did review the Dell U2311H, and our lag was 8ms, compared to their finding of 10ms, so very close results. I'm working on finding a better way to measure lag, as it's one of the harder things to test I find.

    Thanks for reading.
  • holotech - Monday, January 30, 2012 - link

    Oh thanks for noticing my comment. I only linked the Dell U2312HM to show that some e-IPS can be fine for "hard core" gaming since there was some general complaining going on about lag on e-IPS being no good for gaming.

    As far as monitor review improvements, Maybe Pixel responsiveness, ghosting and motion blur comparisons. How do Movies look ? how about really dark scenes? That is all i can think of .
  • cheinonen - Monday, January 30, 2012 - link

    I'm working on something for motion blur, but that might still be a bit further away. Pixel responsiveness will come into play there as well, as the more responsive the pixels, the less blur will be visible. Of course lag can still exist even with improved pixel response time, but that's why I'd like to be able to measure all of them.

    I will look into finding some good shadow detail material for movie testing going forward, but those are also very subjective as well. I'd prefer to be able to produce a test chart that measures gray swatches from 0-32 or so, which we can then chart compared to the 2.2 gamma we are targeting. Calibrating the grayscale at levels that low can be troublesome, as meters have more and more trouble reading values that low, but we can measure the gamma reasonably well with the i1Display Pro, which has more impact on shadow detail anyway.

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