All monitors
come with a factory calibration to help ensure a certain level of accuracy in
some modes and for a variety of common uses. If the user needs more control
over gamma curves, white point, color space mapping, etc., then a separate
calibration device is needed that can profile the monitor and create a common
ICC profile. This is used for further correction and improved accuracy in
color-sensitive applications.
The next
level are monitors that support hardware calibration. These monitors allow you to
calibrate the screen itself, access internal look-up tables (LUTs), and make
corrections and changes to the monitor itself. There's no need to rely on or
worry about ICC profiles, application support, or anything else. Settings are
saved at the monitor level. This is a more flexible calibration option, and is
almost exclusively for professional monitors. It's rare to find this support on
consumer or gaming displays. Two of the models mentioned in this roundup
(PA32DC OLED and PA32UCG Mini LED) support hardware calibration.
For asus Proart
monitors that have this feature, you can use Asus' free calibration software,
or your screen is Calman Ready and Light Illusion ready, and you can use this
high-end software to perform the calibration. Most monitors with hardware
calibration, including the PA32UCG reviewed here, will require your own
calibration device. The PA32DC is a bit different.

Good article for us, asus proart Calibration stores all color settings profiles on the IC chip of the monitor instead of the PC, so you can connect your monitor to different devices without changing any settings or color changes. At the same time, it reduces the signal distortion between the IC and the display.
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