ASUS PB278Q Brightness and Contrast

ASUS says that the PB278Q can do 300 nits at maximum brightness, and that spec hits it right on the head. With a full white screen and the brightness pushed up all the way, I got exactly 300 nits of light output from the display. One of PLS' advantages over IPS is supposed to be the ability to let more light through, though this number is very close to what other 27” displays achieve. It might be able to do this using a lower powered LED backlight, and we will test that out in power usage later to see if that is the case.

With the brightness at minimum, we get 58 nits of brightness which should be low enough for virtually every user. The lowest that most users might set a display to is probably 80 nits, and so as long as a display goes below that level I think that is a perfectly acceptable minimum brightness level. This range from 58 to 300 should also accommodate virtually all users for their brightness requirements.

White Level -  X-Rite i1DisplayPro

Before measuring the black level, I made sure to disable dynamic contrast, as it would likely just disable the LED backlight and give a result of 0 for a black screen. Since no one really uses an all black screen in this way, I don’t feel that testing it is appropriate. With the backlight at maximum the black level was 0.32 nits, and at minimum it was down to 0.062 nits. This is a decent minimum black level for a display, and good for IPS, but not as exceptional as some displays can manage.

Black Level - X-Rite i1DisplayPro

The black level looks better when used to calculate the contrast ratio of the display here. With a contrast ratio right around 935, this is right around what we see for other 27” IPS displays. The PLS display seems to be equal to what other IPS displays can manage, not really much better or worse, but right down the middle of the range.

Contrast Ratio -  X-Rite i1DisplayPro

Brightness and Contrast details are right in line with what we expect from an IPS display, and since PLS is very similar to IPS we see very similar results. The peak brightness is lower than some IPS displays, but most people don’t use more than 300 nits and we will see later if this enabled ASUS to use a lower power backlight.

ASUS PB278Q Introduction and Specifications ASUS PB278Q Color Quality
Comments Locked


View All Comments

  • lemonadesoda - Tuesday, November 20, 2012 - link

    Comparing input lag across the various inputs: DSub, DisplayPort, HDMI, and DVI inputs. If you suspect the multi-input board is causing an issue, is one input better/faster than the other? We often compare colour quality across Dsub and DVI, but let's check input lag, esp. DVI vs. Displayport.
  • cheinonen - Tuesday, November 20, 2012 - link

    I tested DVI, HDMI and DisplayPort and was getting results within 1ms of each other so it wasn't the selected input causing the issue, but the hardware controlling the inputs it seems.
  • Crocography - Tuesday, November 20, 2012 - link

    I always end up buying a Dell. Their monitors are just superb. Whether a cheap one for gaming or a great one for colour ediitng, the Dell monitors have great value. It is funny I always end up looking at all the tech out there and then I come back and buying one from Dell.

    While I was reading this review I was wondering if it was going to be better and cheaper than my Dell 27"... maybe some new competition, after all ASUS make great stuff. But no.

    BTW, you can always find discounts on Dell monitors if you don't have to buy them right away. I have always managed to get mine on huge discounts. Gotta love it!
  • Cannyone - Wednesday, November 21, 2012 - link

    As luck would have it I had the horizontal sync chip in my trusty 1920x1200 Hanns-G 28" go out on Monday. So I needed a new display. The catch was that I wanted a higher resolution than a 1080P monitor. And this Asus seemed like the best compromise between resolution and price. We'll see how good it really is shortly...
  • 5150Joker - Monday, March 11, 2013 - link

    ViewSonic VP2770 is better than this and the Dell U2713HM.

Log in

Don't have an account? Sign up now