Results: Brightness And Contrast
To read about our monitor tests in-depth, please check out Display Testing Explained: How We Test Monitors and TVs. Brightness and Contrast testing is covered on page two.
Uncalibrated – Maximum Backlight Level
Today’s comparison group is all Ultra HD – Asus’ PB287Q and Dell’s P2815Q represent the 28-inch TN category. NEC’s EA244UHD and Dell’s UP2414Q are 24-inch wide-gamut models. And the high-end comes from Sharp’s PN-K321, recently reviewed here at Tom’s Hardware.
The IX2850 hits Planar’s spec of 300cd/m2 almost right on the nose. The last Planar monitor we reviewed, the PXL2790MW cranked out a retina-burning 445cd/m2. So, we’re glad to see this screen toned down some. It would be just bright enough for a sheltered outdoor location or a very sunny corner office.
We’ve seen merely average black levels from the Ultra HD monitors reviewed in our lab, so Planar is doing well to finish second in the group. You’ll see later that the IX2850’s gamma results mean you’ll see excellent shadow detail at all backlight settings.
The max contrast result is a little low only because the other displays have higher white levels. Among all Ultra HD screens though, the IX2850 has decent contrast. The king, not shown here, is still Dell’s 32-inch UP3214Q.
Uncalibrated – Minimum Backlight Level
Dropping the brightness slider to zero yields an almost-ideal 47.6894cd/m2. We love to see numbers around 50cd/m2 for the minimum result because they work perfectly in completely dark rooms. Going much lower means the image won’t be bright enough to be usable.
The minimum black level result falls in the comparison by three places, though it’s still quite dark at .0554cd/m2. When black measurements are that low, you can barely tell the monitor’s turned on. It’s a great setting for gaming or movie-watching at night.
Contrast drops by a mere 1.6 percent, a negligible amount. This is an extremely solid and consistent result. So far, we’re not seeing any disadvantage to Planar’s choice of a TN part for the IX2850.
After Calibration To 200cd/m2
The calibrated black level result shoots back to the top of the chart with an excellent .2421cd/m2 value. The only 4K screen that boasts better is Dell's UP3214Q at around four times the price.
We caught a lucky break when calibrating the IX2850. The contrast control has a much larger usable range than any other monitor we’ve reviewed. By turning it up to 53, we were able to compensate for the contrast loss caused by reducing the RGB sliders' green control. This is the best contrast we’ve seen from any 4K screen we’ve tested, save Dell's UP3214Q.
ANSI Contrast Ratio
The IX2850 posts another winning contrast result in the ANSI test. It’s using the same panel part as several other lower-performing screens, so we have to attribute this to good quality control by Planar. A result of 802.5:1 is only eight percent lower than the max number, which is a smaller gap than pretty much every display we’ve measured in the past year.