Like most monitors, there are several presets profiles to choose from. These include Scenery, Theater, sRGB, Standard, and two user-customizable modes. The mode you choose determines which of the OSD settings you can adjust.
| Color Temperature
| Gain (Advanced)
Once you're inside the settings, you're able to adjust things like the brightness, contrast, sharpness, "Trace Free" (speed up the response time by Over Drive technology), aspect ratio, over scan (only available for HDMI input), saturation, hue, and more.
As we're mostly accustomed to IPS panels in high-end displays, we didn't know quite what to expect from the PLS screen. For the most part, we were pleasantly surprised. For as bright and vibrant as the PB278Q is capable of getting, we were happy to see that backlight bleeding was a non-factor. We were also impressed with its black level performance in sRGB mode (black level performance suffered slightly in Standard mode, and significantly in all the other modes). White and gray levels were also very good on the PB278Q.
We did notice a small amount of overshooting in the video bandwidth test. A perfect video bandwidth score in DisplayMate is 100; the PB278Q scored a 110. According to DisplayMate, a high video bandwidth score can result in ringing and overshooting of images, though the PB278Q scored close enough to 100 that we were unable to detect these anomalies in real world testing. Another issue that came up was a bit of flickering in the Moire interference test pattern, an effect that has a tendency to crop up in high resolution displays with finely focused beams. Finally, text lost some of its sharpness at small font sizes, though otherwise was easy on the eyes.