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Color Temperature

The LS221H is set up well in terms of color temperature. The actual temperatures match the names of the corresponding modes, and there is less than 500K of difference between the different grays. That’s a very good result for a TN matrix!

Alas, the CIE diagram with the results of the same measurements shows a deflection towards green in every color temperature mode. It becomes visible to the eye in the Warm and sRGB mode but is not conspicuous otherwise.

Response Time

The monitor sets a new record with its response time average of only 1.8 milliseconds (GtG) – even lower than specified by the manufacturer. The longest transition is only 3.6 milliseconds.

Alas, the fast response is accompanied with a high level of RTC errors: the average is 24.7%. This is very high (I consider an average RTC error of below 10% as good and below 15% as acceptable). Each transition is accompanied with an error, most of which vary from 20 to 30%. The resulting visual artifacts are quite conspicuous.

 
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