Calibration

The 2490 provides so-called hardware calibration when combined with SpectraView II calibration software and an appropriate colorimeter (sensor). The monitor has rewritable LUT (Look Up Table - a table used to translate input values to output values). In the other words, the 2490 has its own "brains" that can store your commands regarding PQ adjustments and then follows them.
A quote from SpectraView manual:
"The SpectraView system uses a color sensor to take color measurements of the display screen during calibration. The software analyzes these measurements and sends color adjustment commands directly to the display monitor. This means that color adjustments are made in the monitor rather than in the video graphics adapter, resulting in full use of the number of colors available on the graphics adapter and a much brighter image with the maximum possible color gamut. With SpectraView, the video graphics adapter is not used at all to make any gamma or Tone Response Curve corrections to the display, so the full color resolution and fidelity of the system is maintained."
This ability is important for professionals first of all.
Demanding regular users can benefit from hardware calibration too:
1. Colors are kept polished from the first day (this monitor is not factory precalibrated) and over its lifespan.
2. SV kit is a natural extention for OSM options. SpectraView calibration allows some unique setting that are not possible through OSM.
3. The NEC 2490 does not need a computer to maintain calibrated settings. Therefore calibrated setting are applicable to external devices (blu-ray player, PS3). Each input "remembers" its own assignment.
4. SV calibration is very easy. It's done automatically: you load desired values and press Start.