Grayscale Tracking And Gamma Response
Our grayscale and gamma tests are described in detail here.
We would call this a middling out-of-box result. We’ve tested quite a few monitors of late that track better at their factory settings. In our opinion, the sRGB mode, which is non-adjustable, is just a little too warm at higher brightness levels. The background of a spreadsheet or browser window will look red if you’re accustomed to a calibrated screen. Fortunately the fix is an easy one.
We switched to the next coolest preset, number 3, and adjusted the RGB sliders to achieve an excellent result. You can also dial in grayscale using NEC’s SpectraView software and an appropriate colorimeter.
Here is our comparison group.
We’ve seen a recent trend towards better out-of-box color accuracy in every computer monitor market segment. The EA305WMi is OK but it could be better given the competition and its premium price-tag.
Like every other NEC monitor we’ve reviewed, it’s easy to calibrate the EA305WMi to a high standard. While all of these screens perform well when properly adjusted, the NEC, along with the top two screens, excel by falling below the 1dE threshold.
The one area where the EA305WMi is beyond reproach is gamma tracking. The above chart is about as close to perfect as is possible. This helps make up for its lower contrast numbers. With perfect output levels at every signal point, you’ll see maximum image depth and full detail regardless of brightness.
Here is our comparison group again.
.05 percent is the tightest tracking we’ve measured from any display though that record is shared by the PB328Q. The values are so close they almost match the tolerance of our luminance meter.
We calculate gamma deviation by simply expressing the difference from 2.2 as a percentage.
Gamma can track well but still be off the 2.2 standard as we’ve found on some screens. This is not the case for the EA305WMi. It rides the line so closely you can barely see the actual trace through the reference line.