只花了十秒就找到Eizo官網這樣說
http://www.eizoglobal.com/library/management/cms/02.html
Viewing angle is very important in graphics applications, particularly when a monitor will be viewed by numerous people from different positions. Although with an IPS monitor colors generally remain the same when viewed from various angles—above, below, and to the left and right of the monitor—with a VA or TN monitor halftone color changes are noted.
With a large, widescreen monitor, colors can sometimes change in appearance between the center and the left or right sides of the screen when the viewer is seated directly in front of the monitor, as a result of the variations in viewing angle from this position.
A higher contrast ratio is not necessarily better. If the contrast ratio is too high, sometimes shadow colors can be too firm, making images appear stiff and rendering it difficult to match colors with output. The ability to adjust contrast ratio can also be used as a criterion for choosing a calibration monitor.