Dell U2412M Brightness and Contrast

Despite the larger size of the display compared to recent 23” monitors I have reviewed, the U2412M says it can produce 300 nits of light at maximum output, which should certainly be bright enough for anyone to use. It’s worth noting that I usually set the display around 5 nits too high before calibration, to allow for a little headroom when ColorEyes generates the curves. However this also means that maximum light output, once calibrated, might be around 5% lower than maximum due to the curves inside the ICC profile.

White Level -  XR Pro, Xrite i1D2 and XR i1DPro

Despite this possible limitation, the Dell still put out 294 nits at maximum brightness after calibration, and 39 nits at minimum brightness. This was plenty bright for my work area, even with bright overhead lights, and the combination of the high brightness and anti-glare coating made it easy to see the screen.

The weak area for IPS screens has always been the black levels, with them being much higher than those from VA based displays. The U2412M did well here, out performing all recent non-VA displays with a nice, low black level.

Black Level - XR Pro, Xrite i1D2 and XR i1DPro

With this combination of black level and a very bright screen, we would expect to see a decent contrast ratio to come out as well, and the Dell delivers here.

Contrast Ratio -  XR Pro, Xrite i1D2 and XR i1DPro

Beating the specified number by over 10% is always nice to see, and the contrast on the Dell is very nice. It easily outperforms most TN displays, though it's not able to compete with the combination of LED lighting and a VA panel from BenQ. It was also very stable across the spectrum, with virtually identical ratios at maximum and minimum brightness.

While the center stayed nice and bright, the edges showed a good amount of fall off in comparison, and an overall variance of around 6%. The areas with higher brightness uniformity issues were also the areas with higher dE values on the uniformity testing, just as we expected. Looking at black uniformity, thanks to the bright corners this wound up even worse, with a variance of around 14%.

Taken as a whole, the contrast ratios are good, and while there is light fall-off at the edges of the display, it does not seem to have a noticeable effect on color quality.

Dell U2412M Color Uniformity and Color Gamut Dell U2412M Input Lag and Power Use
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  • DParadoxx - Tuesday, February 28, 2012 - link

    Finally a 16:10 review, but its eIPS.... no thanks. Reply
  • piroroadkill - Tuesday, February 28, 2012 - link

    That's what keeps the cost down.

    You knew it was e-IPS before you clicked, I'd wager, and this is just trolling.

    I have a U2410 myself, but that doesn't mean this monitor is bad for the price, by any stretch of the imagnation.
    Reply
  • DParadoxx - Tuesday, February 28, 2012 - link

    I'm not trolling. I'm trying to get reviews of quality monitors. Reply
  • tech6 - Tuesday, February 28, 2012 - link

    Try this
    http://www.tftcentral.co.uk/reviews.htm
    Reply
  • xenol - Tuesday, February 28, 2012 - link

    And I want review of quality products, so that my problems reduce to "which 9/10 product do I want?" Reply
  • Death666Angel - Tuesday, February 28, 2012 - link

    eIPS is plenty good enough for most (gamers, internet users, occasional movies watchers). I'd wager that IPS or -VA with WCG backlight are only needed for a very small minority. And to say that eIPS cannot be a quality monitor is pretty ignorant as well. Reply
  • toyotabedzrock - Wednesday, February 29, 2012 - link

    Or perhaps you are slightly color blind.

    I hate 6 bit monitors they wash out gradients.
    Reply
  • ImSpartacus - Thursday, March 01, 2012 - link

    You're spoiled. Reply
  • choirbass - Saturday, March 03, 2012 - link

    To an extent I would have to agree. If you really want better, you really shouldn't have much of a problem with paying however much more to get just that. Reply
  • Earballs - Thursday, March 01, 2012 - link

    Needs to be 120hz to excite the gamer market IMO, but that's just me speaking from my own demographic. Reply

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