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ViewSonic XG2401 FreeSync Monitor Review

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Panel Uniformity / Panel Performance

Calibrated Settings
Please remember that the settings below have been calibrated for our specific environment and your viewing conditions may differ from ours.

Mode Used: “User Color Mode”
Notes:
– All tests done at default settings at 120 cd/m2.
– Unless otherwise noted, the tests were carried out via DisplayPort

Panel Uniformity

In a perfect world a screen’s brightness output would be equal throughout the entire panel. This is not a perfect world, but the lower the variation the less chances you will notice overly bright or dark sections on the screen. For the consumer LCD marketplace, a variance of 10% is our gold standard but anything below 15% can be considered excellent as we doubt anyone will notice a -7.5 to +7.5 variation. A variation above 15% but below 24% can be considered adequate, but anything above this does not meet our basic minimum standards.

To say that the XG2401 has poor panel uniformity is an understatement. We cannot say that we were all that surprised with a variance of 18 percent, as inexpensive TN monitors routinely have poor uniformity – but we are still disappointed considering the screen’s diminutive size.

Panel Performance

In a perfect world a screen’s real world response rate would be so high that motion blur, ‘ghosting’, ‘reverse-ghosting’ would be a thing of the past. No matter how fast the action on screen all images would be represented in pristine condition similar in quality to a static image. This is not a perfect world, but the less amounts of blurring which occurs the less chances you will notice the issue in real world scenarios. While the panels response rate (ms) and and frame rate (Hz) can give a fairly rough idea of how much blurring to expect it is not the end all and be all.

To this end we have taken PRAD’s Pixel Persistence Analyzer ‘Streaky Pictures’ program and using a high speed camera captured exactly how much and what kind of motion blur you can expect from a given monitor.

As you can see a 1ms response time and 144Hz does not necessarily mean a complete lack of blurring in fast moving objects. In fact, we have seen slower monitors that are much, much better than this. Of course those monitors cost a whole hell of a lot more than the XG2401 and this level of performance was actually surprising – we honestly were expecting much worse performance. Overall, the XG2401 is well above average in this area for its price but it oddly seems that FreeSync is doing very little about the blur here but rather addresses the juddering and tearing quite well.

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