In the following section, we’ll be taking a closer look at the overall color accuracy of this panel. As this is a creator-tailored monitor, this section will be particularly important leading up to our final verdict of this product. Acer states that the B287K has been pre-calibrated to an average deltaE of <2 for the sRGB preset.
| Preset | White Point | Black Depth | Contrast Ratio | Average ΔE*00 | Gamma |
|---|---|---|---|---|---|
| IDEAL | 6500K | 0.00cd/m² | Infinite | 0.00 | 2.2 |
| Out The Box (Standard Mode) | 6141K | 0.3006 cd/m² | 924.2:1 | 4.09 | 2.42 |
| sRGB | 6242K | 0.1921 cd/m² | 880.9:1 | 1.12 | 2.24 |
| Graphics | 6824K | 0.3743 cd/m² | 1028:1 | 4 | 2.31 |
In default mode, the B287K utilizes the ‘Standard’ color preset – utilizing a 200 nit brightness which is more than the recommended for daily usage.
Like always, we tested the B287K out of the box to see how it stacked up in color accuracy. As you can see from the chart above, the out the box settings weren’t the best. White point sat below ideal at 6141K whilst black depth was 0.3 cd/m2. Contrast ratio was pretty standard for an IPS panel (924:1) with average deltaE disappointing at 4.09. Whilst this isn’t the worst we’ve ever seen, it’s not considered great if you want to do color accurate work.
I loaded up the sRGB preset next and, as expected, the color accuracy was far greater. White point and black depth were both increased, with contrast ratio taking a slight dip to 880:1. The most impressive figure we recorded was the average deltaE, seeing it drop to 1.12 within the sRGB spectrum. Again, whilst this isn’t the best, it’s definitely acceptable for light video and photo editing.
We ran the Graphics preset after this but, when comparing it to the sRGB preset, you could tell it wasn’t going to showcase good accuracy. It fell short of the sRGB preset in almost every area – apart from the contrast ratio (1028:1). Average deltaE was recorded at 4.0 making this preset unacceptable for any kind of editing.
| Preset | White Point | Black Depth | Contrast Ratio | Average ΔE*00 | Maximum ΔE*00 | Gamma |
|---|---|---|---|---|---|---|
| IDEAL | 6500K | 0.00cd/m² | Infinite | 0.00 | 0.00 | 2.2 |
| Calibrated Profile | 6779K | 0.232 cd/m² | 947.5:1 | 0.19 | 1.29 | 2.24 |
We wasted no time and calibrated the monitor in ‘User’ mode to see how accurate we could get the monitor to be. We altered the RGB settings to 51/44/51 and reduced the brightness to 20 for best results.
Taking a look at the calibrated results, it’s clear to see what a difference the colorimeter made to the overall color accuracy of this panel. White point sat at 6779K whereas black depth took a dip to 0.232 cd/m2. The contrast ratio stayed strong at 972:1 whilst the average deltaE dropped to an impressive 0.19. The maximum deltaE was 1.29 which is still decent considering the amount of colors tested in a wider range. Gamma read 2.24.
Panel Uniformity
Panel uniformity is a test we run to check how uniform the luminance and colors are across the entirety of the screen. During this test, the center square is used as the reference space. Every other square is then tested to see how far it differentiates from the reference.
In an ideal world, we want every square to be green, meaning it hasn’t broken the differential threshold – something we can set at the start of the test.
Note: results will differ from panel to panel.
Panel uniformity for this monitor scored extremely well, with most of the monitor resulting in an optimal score. Taking a closer look at the chart, you can see that the bottom left-hand corner was the worst area for both luminance and grey uniformity. The rest of the panel scored a green (recommended tolerance passed) result.
Overall, the panel uniformity of this panel was extremely good.
Viewing Angles
Like all IPS panels, the viewing angles on the B287K were extremely good, offering 178/178 degrees on either side. Having said that, the color did start to shift closing in on the above figure, with luminance also affected.
Color Gamut
As part of the calibration process, the DisplayCal will give an accurate measurement of the color gamut the monitor can provide. Below are the results of the color gamut test:
As per the monitor specifications, the B287K did fall a little short when it came to sRGB gamut coverage. It only produced 97.1% coverage – with an overall volume of 121.7%.
Look at the graph, you can clearly see where the B287K’s gamut doesn’t cover the sRGB spectrum – displayed by the dotted line. The b287K offers good coverage that surpasses the red and green sectors. However, it falls short in the blue and yellow regions.
Maximum And Minimum Brightness
We ended the color accuracy and picture quality testing by checking the maximum brightness, minimum brightness, and 120 candela level on this panel. The results are below:
| Brightness | Candelas |
|---|---|
| 100% Brightness | 367.24 cd/m² |
| 0% Brightness | 92.93 cd/m² |
| 9 Brightness | 120 cd/m² |
