In our color testing in Standard mode, the ZenScreen Touch covered 69.1
percent of the sRGB color space (see the chromaticity chart below). The triangle
represents the colors that comprise sRGB—essentially, all the colors that can be
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show where the data points would be for a monitor that covers the full sRGB
space. Several of our test points—the black circles—are well within the triangle,
indicating limited color coverage toward the red and purple part of the
spectrum, while the blue point at lower left indicates slightly expanded coverage
toward the blue/green.
This color chart shows a pattern very similar to those of nearly all the mobile
monitors we have tested since late 2018. As far as its color coverage, the
ZenScreen Touch did similarly to the Asus ZenScreen Go (72.7 percent of sRGB)
and the ZenScreen MB16ACE (69.8 percent), better than the AOC I1601FWUX
(only 61.4 percent of the sRGB space), and slightly better than the Lepow 15.6-
Inch Portable USB-C Monitor (65.4 percent of sRGB). The only portable
monitor we’ve tested lately that did substantially better is the Lenovo
ThinkVision M14, which covered 97 percent of sRGB. (We generally look for at
least 95 percent sRGB coverage in desktop monitors.)
This limited color coverage revealed itself in reds and purples looking dull in
videos and photos that we viewed from our standard test suite. These results are
similar to what we’ve seen on many other mobile monitors we’ve recently tested
(with the exception of that Lenovo).