Understanding vision angles
Regarding the technology, vision angle vary from 140° for TN, to 176° for VA and to 160° for IPS°. This is probably the only characteristic to be trusted, or at least partially. Indeed, TN screens have smaller vision angle than IPS screen, themselves slightly less open than VA screens. But it doesn’t mean that you can take this characteristic at face value.
The vision angle can be established in two different ways. Either the manufacture choose the angle which provides contrast ratio of: 10 : 1, or 5 : 1 for the user. In the first case: 10 : 1 the picture is terrible, and in the other case the picture is even worse.
So you will never get a nice picture from any if these two maximum recommended angles.
However the future range of OLED screen will bring some serious improvements. The tested prototypes provide total vision angles. Even in a vertical position of the picture, colours remain intense.
