- ASUS PB278Q 27-inch WQHD PLS LED Monitor Review
- ASUS PB278Q - Design
- ASUS PB278Q - On Screen Controls and Viewing Angles
- ASUS PB278Q - Color Quality / Accuracy and Uniformity
- ASUS PB278Q - Brightness / Contrast, Backlight Uniformity, and PWM
- ASUS PB278Q - Ghosting, Gaming, and Multimedia
- ASUS PB278Q - Final Thoughts
- All Pages
ASUS PB278Q - Color Quality / Accuracy
Since the sRGB setting was by far the most accurate out-of-the-box, we used that as our "stock" calibration setting. We used an X-rite i1Display Pro and its accompanying software to measure and calibrate the display at the center of the panel.
Our of the box we got a very respectable average Delta E value with the sRGB setting of 2.14. ASUS doesn't make any guarantees about the out-of-the-box color accuracy, but being that it's marketed as a "professional" monitor we'd expect it to be lower than 4. Pleasantly surprised by its accurate sRGB preset performance, we then used X-rite's software bundled with the i1Display Pro to calibrate the display and re-measure. The results were very good here as well, halving the average Delta E value to 1.15, which is itself very good.
A white backlight will limit the overall Adobe RGB gamut that is available to be produced by the screen. Using Gamutvision we see that we have 81.1% of the Adobe RGB Gamut available, which is pretty good for the $700 price point the PB278Q sits in.
Just as important is the color uniformity of the display. If you're working on large-format graphics, and you only have the accuracy you're looking at on select areas of the screen, it may be of diminishing value to you. The color swatches below are the ones used to measure and calibrate the display.
Click a swatch and it will open the uniformity measurements for that color. The color uniformity testing was conducted at 9 spots on the display, centered on the boxes created by dividing the display evenly into thirds, so we did not test the extreme edges for this. However, we'll be doing so on the next page for brightness and contrast uniformity to test for backlight bleeding.
The individual results are consistent with the overall average, with a few colors having slightly different uniformity qualities. Most, however, have the best accuracy at the center of the panel and the bottom-middle and the accuracy is worst on the left and right edges in the center. The middle-left side consistently was the least accurate.