Color Uniformity and Color Gamut

The calibrated results on the ZR2740w were pretty good, but with such a large panel was the uniformity going to suffer because of it? 23” 1080p displays have a hard time with uniformity and are easier to fix, but perhaps since the HP is a higher end display more work has been put into keeping the screen uniform all around. Measuring nine points around the screen at the 200 nits calibrated setting, you can see what we found.

LCD Color Uniformity

Only one of the nine locations had an average dE above 3, and the median value there was still below 2.75. What concerned me the most is that the uniformity on the grayscale was so bad, so when you have a solid white background, which is likely on a monitor like this with spreadsheets and other applications, you will be able to clearly see a shift in the white point as you look at it. Colors were far more consistent than white was across the display, so it seems to be a shift when the panel is fully driven, probably due to unevenness in the lighting I would assume.

While it has an 8-bit panel and can do 10-bit colors with A-FRC, the backlight system of the HP means that you aren’t going to get the full AdobeRGB colorspace on it. The HP comes out of Gamutvision with 76.82% of the AdobeRGB space, pretty much dead on to the 77.2% in the specs.

Color Quality Brightness and Contrast
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  • cheinonen - Friday, March 16, 2012 - link

    The last time I find the U2711 (non-refurbished) for sale was early December, and that was for $849 without a coupon. It used to be on sale more often, but not much recently, and so most people are going to be paying $1,000 or so for it. Comparing an occasional sale price to a list price of $729 is apples to oranges.
  • Lemure - Saturday, March 17, 2012 - link

    Those claims are wrong, any LCD with input lag of around 10 and under are all extremely quick. The HP zr series ips panels along with the dell 23" e-ips and NEC e-ips all have low input lag and are great for gaming. And if input lag was such a huge issue you would not bother to buy an LCD in the first place, you would be buying the Sony fw900. So unless you are competing at the highest levels of CS or Quake, such a difference is unnoticeable.
  • IlllI - Friday, March 16, 2012 - link

    "If you can provide links to any other 2560x1440 27" displays with IPS panels that cost less than $700, let's see them."

    i kindly direct you to this topic

    supposedly have same ips panel that apple display has.

    maybe you guys can do a professional review of one, since the other reviews are in a different language.
  • Roland00Address - Friday, March 16, 2012 - link

    I am waiting eagerly with glee
  • seanleeforever - Friday, March 16, 2012 - link

    i was actually going to make a reference to the catleap.
    the sales price (at korea) is 250 dollars for 27 inch and i think all catleap monitor *could* be set to 90+ Hz which is actually bounded by the graphic card.

    i cancelled my U2711 shipment few days ago decide to give this monitor a try. with Dell i am paying about 900 dollars (tax + env fee) which would bought me 2 of those 27 inch monitor.

    and yes, i fully agree with Snowshredder102. we are not talking about black friday price. and paying MSRT is probably not a smart thing to do to purchase anything. ESPECIALLY with DELL. their stuff goes on sale every other week. the U2711 has been around 700 since last year, if not the year before.
  • seanleeforever - Friday, March 16, 2012 - link

    for some reason, i highly doubt anandtech site will review a non-US market display. actually this webiste once made a statement that they only review what vender provides to them (with VERY few exceptions, the thinkpad review was one of them, and PSU comparison was another)
    anandtech is great source to learn new technology and hardware performance. However, i wouldn't use it for any serious system comparison due to conflict of interest (or i think). i doubt they will put any unfavorable words for vender provided machines and i am pretty positive there is some financial reasons.

    with that said, i will do my own review on OC once i receive the monitor.
  • Crazyeyeskillah - Friday, March 16, 2012 - link

    Jared is right on all accounts. I bought the zr30w because there is absolutely no noticeable input lag. It performs about on par with my sony fw-900 crt. The lack of included scaler makes this possible.

    As for pricing, the only monitors in this price range come from korea named shimian and catleap. You have to buy them from one of two ebay sellers and there are no returns or warrantees. you have about a 1/4 chance of getting a defective product for about 4-500$ so it's a crapshoot.

    I'd really like to see how this compares with my zr30w with the addition of the LED lighting. I think the zr30w is the best gaming monitor on the market with nothing even remotely close. The lack of lag, an ips panel, size, gamut, resolution and brightness are astounding even when compared to the 2200$ paw.
  • seanleeforever - Friday, March 16, 2012 - link

    those monitor technically can be exchanged for free except shipping back to korea will set you 100 dollar easy.

    i am scheduled to go to Korea for a month long business trip, so i am actually thinking about checking it out there and ship it to U.S. the price as far as i know is 250~550 depend on the version you get (8 bit vs 10 bit).

    apparently all catleap panel can handle up to 100 Hz

    the 250 dollar version doesn't have any OSD, but a bit more expensive versions do.
  • Roland00Address - Friday, March 16, 2012 - link

    Key word some.

    The catleap panels are not designed to do any refresh rate besides 60 hertz. Some catleap panels can be overclocked and a good amount of people were getting 85 to 97 hertz.

    That said it appears the day of overclocking catleap panels are over since they newer manufactured ones (but still same model number) is using a new revision for a part and this part can only do about 60 to 67 hertz.
    Click on "OC vs. Non-OC Monitor Internals (Click to hide)"
  • Roland00Address - Friday, March 16, 2012 - link

    While I agree it is a crapshoot and there is a chance you may get a product that breaks soon after the first few weeks you are vastly overrating the chance of a dead of arrival.

    This thread had 2 out of 96 people have a DOA or item was not shipped. Of those 2 they actually did not post in the thread detailing their experience, instead just answering the poll. (It is completely possible these items took forever to ship and thus they answered the poll the item did not shipped.)

    Furthermore if the item is DOA you can use Ebays or Paypal buyer protection program to get a refund.

    Now if the item has 5 or less dead pixels you are out of luck them unless you pay return shipping, since all the vendors advertise the 5 dead pixel policy and they advertise the item is new in a box. Furthermore if the item dies in 3 months you are out of luck, you may be able to get the original manufacture to cover it but you would be responsible to ship it back to South Korea. If the item breaks in 18 months you will be out of luck...etc

    So in sum a crapshoot, but a crapshoot with good odds. I would not recommend this deal to everyone, but if you know what it is going in then it is a good deal.

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